When calculating how many cubes of concrete are in a KamAZ mixer, you can find out what the capacity of a concrete mixer truck (concrete mixer truck, concrete truck) is and how many trucks will be needed to transport the volume of concrete required for construction. The need for transportation is determined by the following factors:
- the concrete solution prepared manually at the construction site has worse quality and technical parameters than the one made in a KamAZ mixer at a specialized plant;
- thanks to the concrete mixer, the solution remains homogeneous, does not separate, does not splash, and does not leak along the way from the plant to the construction site.
Types of KAMAZ mixers and their capacity of concrete cubes.
An industrial mixer is a truck with a pear-shaped drum installed on it, designed for mixing and transporting concrete mortar. This mechanism is mounted on a semi-trailer and is equipped with a separate drive. This fact allows it to be used after being separated from the machine and installed on the construction site.
When comparing types of concrete mixers, you should pay attention to the following basic parameters:
- drum volume expressed in m3;
- the length of the sleeve;
- weight of loaded equipment.
The Kama Automobile Plant produces gravity reversible ABS models based on the KamAZ 65115, 69343, 63963, 53229-15 and others chassis, with various technical characteristics and a mixer volume of 5-12 m³. The most popular equipment is with a pear size of 9 m³.
As for the mass, a 7 cc mixer. m weighs 12 tons, mixer 5 cubic meters. m – 11. Concrete volume 1 cubic. m weighs 2.4 tons. Accordingly, a 7 cubic meter mixer. m will weigh about 29 tons, and 7 cubic meters. m – 23 tons. This must be taken into account when ordering a concrete mixer truck, because not every road surface and construction site can withstand such weight.
The characteristics of popular models are shown in the table:
Specifications | KamAZ-65115-3958 | KamAZ 53229-15 | 69363B (ABS-5DA) on KAMAZ-55111 6x4 chassis |
Water tank capacity, l | 650 | 450 | 600 |
type of drive | Hydromechanical transmission power take-off from the chassis engine (CUMMINS) through an independent power take-off (PTO) | Hydromechanical with power take-off from an autonomous engine | Hydraulic from an autonomous engine D-144 |
Mixing drum rotation speed, rpm. | 0…14 | 0…18 | 0-14 |
Mixing drum loading height, mm | 3560 | 3700 | 3530 |
Concrete mixture unloading height, m | 0,15-2,2 | 0,5-2 | 0-2 |
Geometric volume of the mixing drum, m3 | 6 | 7 | 9 |
Overall dimensions (length x width x height), mm | 8500 x 2500 x 3600 | 9000 x 2500 x 3700 | 7500 x 2500 x 3500 |
Calculation of the amount of solution?
In order to calculate how much concrete goes into the mixer, you need to know several parameters: the weight of special equipment, the mass of one ton of concrete. To do this, you need to calculate the total load that is exerted on the road surface.
How much does a cube of concrete cost in a mixer and what is its volume? As a rule, 1 m3 of concrete material weighs only 2.4 tons. A structure with a volume of 7 m3 can accommodate only 12 tons. That is, the total mass will be 29 tons. A device with a volume of 5 m3 fits 11 tons, that is, the total weight is 23 tons.
When calculating how many cubes of concrete are in a KamAZ-based mixer, you must take into account that the more material you need, the larger special equipment you will need.
The advantages of KAMAZ mixers include:
- Versatility. When using a concrete truck, it is possible to provide concrete for small private construction or large multi-story buildings.
- Mobility. As noted above, the main positive aspect of using a mixer remains the ability to transport concrete mortar over long distances. If a car is completely loaded with concrete, its speed will be 60 km/h. At the same time, the transportation process does not imply any influence on the material by environmental factors.
- Speed of obtaining concrete solution. The presented equipment is capable of preparing a solution directly at a construction site in a short period of time.
- Convenient unloading. If you use a concrete truck with a hose to transport material, you can not only deliver the goods, but also pour them into the formwork.
- Economical. This positive point is achieved due to the fact that while receiving the concrete mixture, the delivery process is also carried out. As a result, the cost of such transportation will be low, in contrast to the preparation of concrete mortar using stationary equipment in a factory.
Factors to consider when ordering concrete in a mixer.
Knowing the amount of mortar in the KAMAZ required to pour the foundation, and how many cubes of concrete are in the mixer, it is easy to calculate the required number of trips. But here we must take into account the fact that in mixers that are used without following the appropriate rules, concrete can remain on the walls and dry out.
Therefore, instead of the ordered quantity, you can receive one ton of solution less.
The following rules will help you avoid this:
- Choose newer and well-maintained cars.
- Make sure that after draining the solution, the drum is thoroughly rinsed with water.
- Record the time of concrete unloading and calculate its quantity, knowing that 1 m3 of solution flows out within 10 minutes.
Following these rules, you can easily calculate how much concrete a KAMAZ mixer actually contains.
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Automotive concrete mixers KAMAZ
KAMAZ PJSC is a major manufacturer of trucks. The first truck rolled off its assembly line back in 1976.
Currently, the company is trying to keep up with the times, improving its products taking into account environmental standards, ergonomics, and using components in designs developed by recognized luminaries of the automotive industry. A big event was the start of production of trucks with gas engines in Naberezhnye Chelny.
Currently, the concern produces about twenty ABS models, and additional opportunities opened up after joining the group.
What is typical for KAMAZ special equipment:
- Compared to foreign analogues - affordable price.
- Excellent performance characteristics, reliability, service life.
- Adaptability to difficult road and climatic conditions.
- The ability to carry out simple repairs with your own hands.
- Available spare parts and components.
Using this technique, you can easily deliver concrete mortar to a construction site, as well as prepare it directly on site and distribute it around the construction site. If this topic interests you, we suggest you watch the video in this article.
Two-axle ABS are currently not in great demand and the leading ones, KOMZ-Export, which produces products under the Tigarbo brand, including those producing concrete mixer trucks on the KAMAZ chassis, have refused to produce them.
Three-axis models are the most relevant now. They are equipped with mixers with a useful volume of up to 9 m3. And here, mixers installed on the KAMAZ chassis are popular due to the budget selling price, cheap spare parts, usually available, and the possibility of self-repair of equipment.
While in this segment it is still possible to compete with the products of Chinese concerns, in the four-axle sector this is becoming increasingly difficult. Let's look at the most popular models of concrete mixers on the KAMAZ chassis.
Concrete mixer truck 58148Y
"KAMAZ 58148Y" - concrete mixer truck on the KamAZ 6540 chassis
The concrete mixer is installed on a four-axle chassis. Belongs to the Euro-4 environmental class. This equipment is equipped with a large-capacity drum (up to 8 m3 of finished mixture) and is intended for transporting concrete mixtures to large construction sites. It is fully adapted to the road and climatic conditions of various regions of Russia. Maximum travel speed is 60 km/h.
The base cost of the model is within 4.5 million rubles. An analogue of this concrete mixer is ABS 9DA from KOMZ-Export CJSC, made on a KamAZ chassis.
What characteristics does this TIGARBO concrete mixer truck have:
- KAMAZ 6540 also acts as a chassis;
- the volume of concrete delivered by this mixer has been increased to 9 m3;
- The water tank capacity is 800 l;
- autonomous motor for the mixer;
- The total weight of the ABS reaches 32 tons.
Concrete mixer trucks Kamaz Tigarbo 9DA
The car shown in the photo costs 4.5 million rubles. There are 9 models of concrete mixer trucks in the line of KOMZ-Export CJSC. However, they do not actively use the KAMAZ chassis, preferring other manufacturers.
Concrete mixer truck 581462
Concrete mixer truck 581462 mounted on KAMAZ 53229 chassis
This ABS is installed on a three-axle chassis and belongs to the second environmental class. A little obsolete, not the most powerful in terms of performance (the useful volume of the drum does not exceed 6 m3), but a reliable mixer. The average fuel consumption of a car, depending on the operating mode, varies between 28...31 l/100 km.
The cost of a used mixer is in the range of 850...950 thousand rubles.
Important! A good option for purchasing budget equipment is to purchase it from storage, through conversion. The cost of the models is not much higher than the price of used machines (and often lower), however, these copies have not been in operation and only require maintenance to start working.
Concrete mixer truck 58147A
TZA 58147A concrete mixer truck mounted on a KAMAZ 65115 chassis
This machine is designed for operation at temperatures of -20…+40 degrees. To ensure ABS operation at lower levels, a “winter package” is installed. The big advantage of this model is the use of European equipment: the chassis is equipped with a Cummins ISB6.7 300 engine (ecological class 4), and a ZF-9S gearbox is installed.
The hydraulic drive system is equipped with high-quality and reliable components of European and domestic production. The price for such special equipment starts at 3.4 million rubles. A two-year-old used KAMAZ 58147A concrete mixer truck with a mileage of about 50 thousand km can cost 2.3 million rubles.
Concrete mixer truck 58146V
ABS 58146V on KAMAZ-65111 chassis
All-wheel drive concrete mixer truck, in which the concrete mixer operates using power take-off from the chassis engine, which has a beneficial effect on economic, ergonomic and environmental aspects. The price for an automixer starts at 3.25 million rubles.
Concrete mixer truck 58149 W
On the KAMAZ 6520 chassis, concrete mixer truck 58149 W
The technical characteristics of the KAMAZ 6520 - 58149 W concrete mixer truck, in which the power take-off for the mixer is carried out from the chassis engine, make it possible to transport a large amount of concrete solution.
What is interesting about this concrete mixer truck mounted on a KAMAZ chassis: 9 cubic meters. concrete can be delivered to the site at a time, the capacity of the water tank is 800 liters, and the total curb weight of the vehicle reaches 33 tons. When equipped with a Cummins engine and a ZF gearbox, such a mixer will cost 5 million rubles.
After the release of Federal Law No. 248-FZ in the summer of 2015, which tightened the standards for permissible vehicle weight and axle loads, carriers have to adapt to new realities.
Most of the equipment is operated with some underload, permits for overweight transportation are issued, or transportation is carried out bypassing public roads. Otherwise, very decent sanctions are provided: up to three hundred...four hundred thousand rubles for legal entities.
In order to make life easier for builders and transporters, the Tuymazinsky Plant has launched the production of lightweight concrete mixers with loads of less than 8 tons per axle: ABS 58145Y on the KAMAZ-65115 chassis (6x4 wheel arrangement) and ABS 58147Y on the KAMAZ-6540 chassis (with wheel arrangement) formula 8x4).
ABS 58145Y
Mixer 58145Y on KAMAZ 65115 chassis
This three-axle automixer with a gross weight of 22.2 tons is driven by the chassis engine. The engine of the new model is Cummins ISB6.7 300 (diesel, turbocharged, Euro-4 environmental class) with a power of 307 hp.
The car is 2016. (without mileage) will cost 3.1 million rubles.
Structures – self-loading concrete mixer truck China
The self-loading self-propelled concrete mixer has a compact structure and is mainly composed of six parts : Under the mixer there is a chassis, which is designed to support the mixer. The powerful motor of the concrete mixer with skip hoist can provide power and ensure that the machine can work efficiently. The mixing drum is driven by a powerful motor and ensures fast mixing, high quality mixing. The hydraulic system of this self-propelled concrete mixer device is the core of unloading materials, this unloading method has been widely used. And its discharge speed is quite fast, which can effectively save construction costs. An independent water supply system can continuously supply water to ensure the normal operation of the machine. The operating room space is small, but can provide an ideal workflow. It has an attractive appearance and compact structures, all compositions fully interact with each other and work efficiently.
Parts of Self Loading Concrete Mixer
Nuances when delivering concrete by mixers
By calculating the volume of concrete to be poured and knowing how many cubes of concrete are in the Kamaz mixer of the material manufacturer you hired, you can simply and quickly calculate the number of trips. However, we must take into account the fact that some suppliers are dishonest, resulting in violations of equipment care rules. So, if the inner surface of the mixer drum is not washed after draining the load, the concrete remaining on its walls hardens and significantly reduces the amount of “usable” material for subsequent deliveries.
- Approximate calculation based on the weight of concrete. According to trade rules, the machine must be “packed” (weighed) before loading the material. After loading, the machine is weighed again, and the amount of loaded material is indicated on the cargo bill. Knowing the weight of the material, you can calculate its volume. To do this, the mass of the solution in kilograms (from the invoice) is divided by the approximate density of concrete in kg/m3: 1800-2400 kg/m3 – heavy concrete; 500-800 kg/m3 lightweight concrete, 500 kg/m3 foam and ultra-lightweight concrete;
- By unloading time. On average, 1 m3 of concrete is unloaded within 10 minutes. Therefore, you can stand near the machine, note the time of unloading the machine in minutes and divide the resulting figure by 10 to determine how many cubes of material were brought to you (or not brought).
Moreover, both methods of verifying the integrity of a company can be implemented simultaneously, independently of each other. Such a check is especially relevant if you buy a significant amount of construction material - several or several dozen KAMAZ flights.
You can also ask if the company has a GPS tracking system for vehicle movement. As a rule, conscientious companies have such a system, which completely eliminates the partial unloading (theft) of material by the driver on the way to the customer.
The main advantages of delivering concrete by mixer
Purchasing and transporting concrete mixture in this way has its advantages:
- the ability to transport material over long distances without loss of quality;
- the composition is protected from the effects of negative atmospheric factors (sun, temperature changes);
- prompt provision of mortar for both small construction projects and large-scale objects;
- easy, convenient loading and unloading of the mixture from the drum;
- the ability not only to deliver material, but also to fill the structure;
- savings - simultaneously with mixing the solution, it is delivered, which is cheaper than stationary, factory preparation;
- you can buy ready-made, required volume of material;
- built-in strain gauges monitor the level of concrete filling in the mixer and signal about overflow;
- concrete mixture can be transported in dry or liquid state;
- Due to the fact that the drum of the concrete truck constantly rotates, the solution inside does not harden and does not lose quality during transportation.
Classification of structures
This equipment is classified according to several technical parameters. There are 3 main categories.
Based on the type of drive, a distinction is made between mechanical drive (almost not used nowadays) and hydraulic drive.
According to the type of location of the mixing plant. The front position for the driver is the most convenient. Thus, he monitors all processes without leaving the cabin. Rear unloading, in turn, is more common due to the low cost of the device. Requires the direct presence and control of the driver.
According to the source of traction. Drum rotation is the main function of the mixer. Thus, they distinguish:
- Autonomous traction. The tank moves independently, it is not connected to the main motor of the vehicle. This KAMAZ mixer works on the principle of transmitting engine force to the drum through a belt. At the same time, there is more noise, but the stirring is performed better;
- Combined traction. The drum moves only in conjunction with the operation of the machine. The main parameter is less noise and saving resources.
Technical characteristics of the capacity of different KamAZ models
The capacity of different models based on KamAZ is presented in the table:
Specifications | Concrete mixer truck model | ||
58147Y | 58149W | 5814W2 | |
Basic chassis | 6540 8×4 | 65201 6x4 | 65201 8x4 |
Mixer capacity according to the output of the finished solution, m 3 | 7 | 9 | 12 |
Unloading speed, m 3 /min | 2–4 / 7–8 | 1 | 1 |
Unloading height, mm | 2150 | 400–2350 | 360–2310 |
Loading height, mm | 3570 | 3800 | 3820 |
Mixer rotation speed, rpm | 0–14 | 0–14 | 0–14 |
Mixing drum drive type | hydromechanical with power take-off from the chassis engine through the PTO FH 9767 | hydromechanical with power take-off from the chassis engine through the PTO FH 9731 | |
Water tank capacity, l | 600 | 800 | 800 |
Gross vehicle weight, kg | 28200 | 33100 | 41000 |
Curb weight, kg | 12425 | 13825 | 16425 |
Length, mm | 8050 | 8800 | 10900 |
Width, mm | 2500 | 2500 | 2550 |
Height, mm | 3625 | 3800 | 3940 |
All models of KamAZ concrete mixer trucks have different loads, weight parameters and dimensions. The width of the vehicle remains unchanged, which is 2.55 m (large mixers) and 2.50 m (all others).
The volume of the concrete mixer is 7 m³, based on the KamAZ-4310 chassis
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Types of concrete mixer trucks
All concrete mixer trucks (ABC) are manufactured on the basis of trucks. General requirements for equipment are formalized in GOST 27339-2016 “Concrete mixer trucks”. To transport solutions, the vehicle is equipped with a mixing drum.
The volume of concrete drums varies from 3 to 15 m3. The inside of the container is equipped with blades for mixing the composition, loading and unloading it. Depending on the type of operation, the blades rotate in different directions.
Mixer blades
Mixers installed on truck chassis differ in the following ways:
- Direction of solution unloading. It can be done forwards and backwards.
Rear concrete unloading
- Engine type. The mixer operates from an autonomous engine or by taking power from a truck engine.
- Drum drive. It can be mechanical (rarely used nowadays) or hydromechanical.
Most mixer models are equipped with special tray devices for unloading concrete in hard-to-reach places.
Unloading concrete mixture into a prepared trench
Concrete mixers can be installed on specialized chassis, as well as on semi-trailers, which must be aggregated with tractors.
Concrete mixer on semi-trailer
The technical conditions for the production of ABS standardize the following indicators of this special equipment:
- overall dimensions and weight;
- drum volume (geometric and based on concrete solution output);
- mixer rotation speed;
- volume of the water tank heated by the exhaust gases of the chassis engine;
- mixer drive power;
- loading and unloading height, etc.
What should be ensured by the design of a concrete mixer:
- receiving ingredients for preparing concrete mixture:
- preparing the solution in proportions as required by the instructions and with the required characteristics and its transportation without loss of properties;
- unloading of the finished mixture, including batch and emergency;
- variable frequency of mixer operation;
- controllability and stability of a loaded vehicle must comply with the requirements of regulatory documents;
- possibility of washing the concrete mixer.
Electronic controls, water flow devices, water tanks of various sizes, etc. may also be provided. In the market of concrete mixer trucks, a significant share is occupied by equipment manufactured on the KAMAZ chassis. Let's consider the model range of such mixers and their technical characteristics.
Indicators affecting mixer capacity
The mixing drums of a concrete truck based on the KamAZ chassis have different capacities. The number of cubes of concrete in KamAZ depends on the model of special equipment and the type of its design. KamAZ concrete mixer trucks are available with drum volumes from 5 to 12 m
3
.
To provide concrete for large construction sites, special equipment with a capacity of 10–12 m is used
3
. It will be difficult for a vehicle with such a tank volume to enter a small-scale construction site.
It is more advisable to use equipment with a mixing drum of 6–9 m
3
. These standard sizes are the most popular and common among private developers.
Concrete mixer truck (concrete mixer) 69363B (ABS-5DA) on KAMAZ-65115 6x4 chassis
Technical characteristics of concrete mixer 69363B (ABS-5DA) on KAMAZ-65115 6x4 chassis
Model 69363B (ABS-5DA) Useful volume of the mixing drum, m 3 5.0 Geometric volume of the mixing drum, no more than, m 3 9.0 Rotation speed of the mixing drum, rpm 0-14 Loading height, mm 3530 Unloading height of concrete mixture , m 0-2 Capacity of the water tank, l 600 Type of drive of the mixing drum, hydraulic from an autonomous engine D-144 Power consumption of the drive of the mixing drum, kW 37 Rate of unloading of the concrete mixture, m 3 /min 1 Weight, kg: - technological equipment 3755 - equipped with 10435 - transported concrete mixture, no more than 10915 - full, no more than 22400 Total weight distribution, kg, no more: - on the front axle 5550 - on the rear bogie 16850 Overall dimensions, mm: (length x width x height) 7500x2500x3500 Maximum speed movement at full load (unloaded), km/h 50 (75) Base chassis: Model KAMAZ-65115 Engine: Model 740.31 (Euro-4) Type diesel with turbocharger Maximum power, l. With. (kW), at 2200 rpm 240 (176)
ABS concrete mixer truck 58147Z, 58147A, useful capacity 7 cubic meters.
Concrete mixer truck 58147С on KamAZ 65115 chassis (6x4)
Concrete mixer truck 69363B (ABS-5DA) manufactured by TIGARBO (K-Shakhtinsky) on KAMAZ-65115 6x4 chassis
Our company provides the most favorable terms of cooperation in the field of supply of cargo and special equipment. You can buy a concrete mixer truck (concrete mixer) and other construction equipment on credit or lease. If you need a reliable concrete mixer based on KamAZ-MAZ, ours offers various models of mixers at the best prices. The quality and reliability of KamAZ-MAZ vehicles has been proven by time.
Criteria for choosing a concrete mixer
The model range of KamAZ concrete mixer trucks includes more than 20 vehicles. Before choosing a specific model, consider the following:
Example of ABS technical characteristics
- Drum volume. The speed of movement of the concrete mixer, the amount of solution loaded into the mixer, and the load on the road surface depend on this indicator.
- Engine power.
- Patency.
- Full weight of the equipment. Not every large and loaded mixer can travel everywhere.
- Drum rotation speed.
Video: New concrete mixer trucks TZA
Construction of concrete mixers
Mixer device
On cars, gravity-driven reversible concrete mixers with a pear-shaped drum are used. The drum must be inclined to the horizontal plane at an angle of 10-15 degrees.
There are helical blades inside the container. When the drum rotates in one direction, they ensure mixing of the solution, and when rotated in the other direction, the solution is completely unloaded.
It should be noted that modern concrete mixer trucks are equipped with a water supply system, which will allow the drum to be flushed of the remaining mixture. They may also have functions such as weighing and dosing. This allows you to prepare high-quality concrete with certain technical characteristics.
Concrete mixer based on a KamAZ vehicle
Platform
Serial trucks are usually used as platforms. Among domestic vehicles, KAMAZ vehicles are the most popular. Moreover, they have become widespread not only in the CIS countries, but also beyond their borders.
Also, KrAZ and MAZ vehicles are often used as platforms for concrete mixers. Among foreign brands, Iveco, MAN, Scania, etc. equipment are very popular.
What are the advantages of ordering a mixer?
The volume of concrete in the mixer is quite large. All components of the solution are mixed at the factory, loaded into a Kamaz and sent to the site. At the same time, the customer can be sure that the concrete exactly corresponds to the declared grade and all relevant parameters according to GOST. Concrete is delivered to the site in finished form and supplied to the pouring site.
Advantages of using a concrete mixer truck:
- Delivery of freshly prepared mixture directly to the site
- Exact compliance of the brand and technical characteristics with GOST
- Possibility of supplying the solution directly to the formwork
- Significant reduction in the share of manual labor - due to the absence of the need to prepare the mixture yourself and deliver it to the site (the solution is supplied through a chute)
- High speed of work implementation, absence of unnecessary seams, areas with low-quality concreting
- Delivery of concrete to any distance - small and large factories provide the service in Moscow and the regions, with precise adherence to transportation time
Concrete in KamAZ retains mobility, homogeneity, does not dry out and does not delaminate. Many modern models are equipped with pumps and various types of hoses to effectively move the mixture over a distance of several meters or more.
What you should pay attention to
Before ordering a building mixture and calculating how much Kamaz concrete takes, you need to carefully prepare everything. After all, ready-made concrete will not stand for long and will begin to harden fairly quickly, so it must be used sparingly and not be distracted by other tasks.
What you need to do when ordering the mixture:
- Provide access roads for concrete mixers - you may need several unloading points (for significant volumes of monolithic work).
- Clear the area for parking the mixer, from where the supply will be carried out - it is desirable that the distance is 8 meters from the edge of the trench. The slope should not be more than 5%, the dimensions of the site should be at least 6 by 8 meters.
- Prepare all the tools for work - a vibrating plate for compaction, and other devices.
- Think about where the excess mixture will be drained - you can assemble formwork for some small structures (barbecue, fence, etc.).
- Order delivery only from trusted manufacturers, having previously read the reviews - after all, it will be difficult to control the volume of the mixture; a lot depends on the honesty and integrity of the supplier.
- It is better to plan delivery in the morning so that you have time to use up all the solution.
- If you need several mixers, you need to first draw up a schedule for the arrival of Kamaz trucks and a work plan. It is advisable to leave a gap of at least 2 hours between flights.
- When receiving the mixture, be sure to check the delivery note, a certain sample quality certificate for the solution, which indicates the brand, volume, etc.
Delivery of concrete mortar using a KamAZ mixer is an excellent opportunity to save time, money and effort by obtaining a high-quality mixture that meets all requirements.
Principle of operation
The operator drives the mixer to the materials storage area and places all the raw materials needed for production into the mixing drum with ladle. Then the mixing drum begins to mix all the materials, after the concrete mixing is completed, the operator sends the concrete mixture to the designated construction site, during transportation, the self-propelled concrete mixer will continue to mix the concrete to prevent the concrete mixture from freezing.
Options for calculating the amount of solution
There are several ways to calculate how much concrete will go into the mixer. Each master chooses the most suitable one for him.
Option 1
It does not give exact results - rather, it is an approximate calculation, which is based on the mass of concrete and assumes the personal presence of a specialist at the plant when washing the drum and loading the mixture. Before filling the concrete mixer, it is weighed (net weight), after filling the manipulations are repeated (gross weight). Then the first value is subtracted from the second value and the mass of the loaded material is obtained.
To calculate the number of cubes of mortar in the drum, you need to divide the weight of the concrete on the invoice by the density.
Density indicators:
- 500 kg/m3 – ultra-light concrete, foam concrete
- 500-800 kg/m3 is lightweight concrete
- 1800-2400 kg/m3 – indicator of heavy concrete
Option 2
This method allows you to calculate the volume of the mixture and the total load of equipment on the road surface. One cubic meter of the mixture weighs up to 2.4 tons - which means there are 16.8 tons of concrete in a 7-cubic drum.
The empty weight of a 7m3 truck mixer is 12.4 tons (curb weight), a loaded 7 cc concrete mixer truck weighs 29.2 tons.
Methods of transporting concrete. Characteristics of concrete mixer trucks
Description of concrete mixer trucks
As you know, gone are the days when concrete was delivered by dump trucks.
Now concrete mixer trucks (ABS or mixer) are used to deliver concrete mixture to the site. The task of ABS according to GOST is to exclude the possibility of precipitation getting into them, disruption of homogeneity, loss of cement mortar, and also to ensure the protection of the mixture en route from exposure to wind and sunlight. The safety and uniformity of the concrete mixture during transportation is ensured by the rotation of the drum. There are spiral blades inside the drum. When rotating in one direction (during loading and transport), the blades drive the mixture deeper into the drum. While the concrete mixer truck is moving with concrete mixture and at temporary stops, rotation of the drum in the opposite direction is strictly prohibited. When rotating in the other direction (during unloading), the Archimedes Screw mechanism is used, with the help of which the mixture is unloaded.
Preparation of the concrete mixture is possible directly in a concrete mixer truck during transportation, when cement, water and aggregates are loaded into the drum. In Russian concreting practice, the more common scheme is to transport ready-mixed concrete mixed at the plant.
Volumes of concrete mixer trucks
The most popular on the Russian market is KAMAZ ABS with a volume of 7 cubic meters, followed by 9 cubic meters.
The top three are closed by small two-axle mixers based on Japanese right-hand drive trucks with a volume of 2 to 5 cubic meters. ABS with a barrel volume of 7 cubic meters. as a rule, it is loaded at 6-6.5 cubic meters, and with a barrel volume of 9 cubic meters. at 8-8.5. Not filling up to full volume is associated with a number of factors:
- Preventing spillage of moving concrete during transportation.
- Reducing the load on tires, frame, subframe and chassis ABS.
- The smaller the vehicle’s loading volume, the more passable it is over rough terrain.
Dimensions of concrete mixer trucks
ABS 7 cubic meters based on KAMAZ 65115 has the following overall dimensions:
- Length - 7800 mm.
- Width - 2500 mm.
- The height of the funnel is 3700 mm.
- Weight without concrete - 12500 kg.
- Weight with a load of 6 cubic meters is 27500 kg.
- The capacity of the water tank is 650 liters.
- The total length of standard gutters (1 gutter + 2 extensions) is 2500 mm.
- The total length of standard gutters (1 gutter + 2 extensions + additional gutter) is 6500 mm.
- The maximum unloading height is 1700 mm.
ABS 9 cubic meters based on KAMAZ 6520 has the following overall dimensions:
- Length - 8800 mm.
- Width - 2500 mm.
- The height of the funnel is 3850 mm.
- Weight without concrete - 14500 kg.
- Weight with a load of 8 cubic meters - 34500 kg.
- The capacity of the water tank is 1000 liters.
- The total length of standard gutters (1 gutter + 2 extensions) is 2500 mm.
- The total length of standard gutters (1 gutter + 2 extensions + additional gutter) is 6500 mm.
- The maximum unloading height is 1900 mm.
Concrete sells concrete at an affordable price and quickly and efficiently delivers the concrete mixture using its own fleet of concrete mixer trucks.