The question of how many cubic meters of concrete are in a Kamaz mixer arises when implementing large-scale projects with large volumes of construction. The concrete solution used in the construction of a building or structure must be supplied quickly and in large quantities, and therefore preparing the mixture at home is irrelevant.
Concrete mortar may be needed when pouring a foundation, plinth, blind area, floors, platforms, paths, etc. Often, craftsmen prepare the mixture with their own hands or using a concrete mixer. Despite the simplicity of the process, it is important to calculate everything: the volume of the cement mixture, optimal proportions, time (to quickly use the concrete after mixing).
The preparation of large volumes of concrete is best left to professionals. In this case, it will be possible to obtain the required amount of solution at the specified time, prepared according to technology and corresponding to all parameters and characteristics.
To accurately calculate the amount of material, you need to know how many cubes of concrete the Kamaz mixer can hold. It depends on the model of equipment, the properties of concrete, and other important nuances.
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.
ABS technical specifications
The safety of the concrete mixture during transportation is ensured by the constant rotation of the drum, inside of which there is a mechanism with mixing blades. The mixer is unloaded by the reverse movement of the blades. When ordering a concrete mixer truck, you must consider the following characteristics:
- Drum volume. Manufacturers of construction equipment produce drums of various sizes: from mini-mixers of 2 m3 to large ones of 15 m3. Mixers of impressive volume are used in the construction of large-scale projects, for example, when pouring a foundation;
- Mixer filling capacity. Given the stated technical characteristics, it is worth considering that ABS is almost never filled to capacity. This is due to the tightening of fines for overloading since 2015. As a rule, the actual filling of the drum is 1-3% lower than the maximum;
- Sleeve or gutter length. The device through which concrete is unloaded from the mixer has a length of 1.5-2 m. Suppliers often offer elongated hoses, and the unloading time increases accordingly;
- Weight of loaded concrete mixer truck. This parameter is important when delivering within the city, where there are weight restrictions for special vehicles, as well as when driving the vehicle on viscous soil. In many cases, it is more economical to order two or three 6cc mixers instead of one for 12-15 m3.
Types of mixers and their parameters
The Kamaz mixer is a truck belonging to the class of special equipment, which is equipped with a rotating pear-shaped container where concrete solution is transported. According to GOST 7473-2010, the mixture does not experience the effects of precipitation, ambient temperatures, or ultraviolet radiation during transportation. The solution remains homogeneous, fresh and of the highest quality, suitable for any task.
When concrete trucks are used for transportation, any risks of cement mortar leakage, drying out, delamination, exceeding the service life, freezing in the cold or early setting are eliminated. If the solution is transported over long distances, various plasticizers are added to the composition to extend the time it retains its properties.
To answer the question of how much concrete is in the mixer, you need to know exactly the model of equipment and brand, and the characteristics of the solution. The most popular on the market today are the models of the Kama Automobile Plant, which produces gravity reversible ABS based on the KamAZ chassis 65115 and 69343, 63963 and 53229-15, etc.
The mixer capacity can vary from 5 to 12 m3. The greatest demand is for equipment with a capacity of 9 cubic meters.
Modern automobile concrete mixers are equipped with a hydraulic drive, which has replaced the mechanical mixing method. After the concrete is immersed in the mixer, the solution is mixed using drums with spiral blades. The mixture is unloaded in the back/forward direction with the reverse rotation of the blades. A modern automixer can deliver concrete at temperatures from -30 to +40 degrees.
How to prepare concrete for a concrete mixer:
- All dry components are loaded into a container, covered with water from the tank, and mixed during transportation.
- Preparation of the mixture at the factory, pouring the finished solution into the mixer, delivery
To facilitate work, automobile concrete mixers use: standard or extended chutes up to 7 meters, supply hoses and pipes, concrete pumps, special transport belts with the ability to unload up to 14 meters. A telescopic boom is also used, thanks to which it is possible to increase the length of the feed to 50-60 meters.
There are several ways to determine how many cubes of concrete are in the mixer. The volume of the solution in the container is not equal to the geometric volume of the drum itself, but is determined by the capacity/yield of the finished solution. After all, part of the free space is used for effective mixing of concrete. According to GOST, the difference is 4-6 cubic meters.
At the same time, the mixer capacity is a factory technical characteristic by which the maximum load level of the concrete mixer truck is determined. The customer pays for the volume of concrete that is actually delivered, and not for how many cubic meters hypothetically go into the mixer. Thus, the capacity of a Kamaz concrete truck mixer with a geometric volume of 8 m3 delivers a maximum of 5 m3, which is due to the capabilities of the chassis and the carrying capacity of the vehicle.
The question of how many cubes of concrete are in a Kamaz concrete mixer is relevant for many. The range of special equipment from this manufacturer includes about 20 machines. And each of them assumes a certain amount of capacity, the size of additional devices, and functions.
What to look for when choosing an automixer:
- Drum volume - affects the speed of the machine, the amount of mixture, and the level of load on the road surface.
- Passability – especially if delivery to remote regions is planned.
- Engine power also affects the speed and ability to transport large volumes of solution.
- The total weight of the equipment - not all loaded mixers can go everywhere, especially if access to the construction site is difficult.
- Drum rotation speed affects the efficiency of concrete mixing.
Problems of concreting with homemade mixture
In critical construction projects, designers, when calculating the strength of reinforced concrete structures, set class “B”, and the composition composition is calculated for grade “M”. Concrete manufactured in accordance with GOST in factory conditions maintains the M/V ratio. A makeshift batch of the required brand may not ensure that the load (B) on the strip foundation from the building frame is accepted.
If a monolith is formed in formwork and with reinforcement, pouring must be carried out quickly and continuously. A break in the supply of concrete will be provided not by a monolith, but by a layer cake, which will quickly collapse from the gap at the joint due to a decrease in frost resistance and corrosion of the reinforcement. Any object is poured continuously and in full, with the mass compacted by vibrators.
Organizing the mixing of cement mortar locally in large quantities is not economically viable. Manual labor of workers will cost more than buying a ready-made composition. Transport costs will remain - you will need to bring in components, water, rent, or buy a low-power mixer.
Indicators affecting mixer capacity
Mixing drums of concrete trucks based on KamAZ can have different dimensions and capacities. How many cubes of concrete are in one mixer depends on the model of the machine and the type of structure. Typically the drum volume is 5-12 cubic meters.
If serious construction is planned, large machines capable of delivering 10-12 m3 are chosen. But it is worth remembering that such a Kamaz requires considerable dimensions and will not be able to enter all construction sites.
The best choice is considered to be equipment with a volume of 6-9 m3, which is why these models are most common among manufacturers.
It is worth remembering that each mixer has a certain tilt angle in the range of 10-15 degrees. The inclined position of the drum and the internal blades in the form of screws guarantee convenient and complete loading/unloading of the solution. The water tank is used to flush the tank after draining the mixture and to prevent it from solidifying on the walls of the tank.
All Kamaz mixers have different dimensions, weight, and loads. Only the width of the vehicle remains standard, equal to 2.55 meters (for large mixers) or 2.50 meters (for other models). The height may also vary.
How to save money when buying BSG
When ordering a composition for concreting, the client should know that the higher the brand, the higher the cost of a BSG cube. Therefore, if M200 is required for the foundation during one-story construction, there is no need to order M250. Order goods in advance so as not to pay for urgency and receive bonuses.
Calculate the need for BSG by volume with an addition of 10% for losses. You can use a calculator or ask to calculate the total volume when ordering. There must be an accurate measurement of the internal volume in the formwork, neglecting the reinforcing mesh.
The formwork must be installed in advance, before the concrete is unloaded at the construction site. Provide concreting of architectural forms with the remains from the mixer. Create all conditions so that the entire ordered volume of concrete mixture is used.
It is necessary to take into account that the calculation for concrete solution and transportation costs are summed up. If the client found BSG on sale from a site 30 km from the construction site, the total cost of the goods from the nearest RBU will be less.
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.
Selection of equipment regarding design features and required volume
Characteristic features of designs that are important to consider when choosing a model:
- The most durable transmission method is considered to be a gearbox, but more well-known modifications have a ring gear, which is easier to repair.
- In addition, the engine must be protected from water, since the system is located in the open air.
- The presence of wheels will make transportation easier.
- The functionality of loading ingredients and unloading the finished mixture is also important. You can do this manually yourself or with the support of a special bucket.
In addition, the installation can be equipped with dispensers. And, the material of the drum body is steel no thinner than 1 mm, since concrete corrodes the alloy.
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.
Option 3
On average, a cubic meter of mixture is loaded in 10 minutes. If you track the time of unloading, you can approximately calculate the volume of the supplied mixture. First, the number of minutes of unloading is determined, then divided by 10. This way you can get the number of cubes of the mixture.
When choosing a reliable and conscientious supplier, you don’t have to worry about how many cubes of concrete fit in a concrete mixer. It is enough to calculate the volume of solution needed to complete the work and determine the optimal delivery time. Everything else is the responsibility of the supplier.
Device
The design features of an automobile concrete mixer are determined by the need to prevent precipitation from entering the finished concrete mixture. The safety and uniformity of concrete is achieved by rotating the drum during movement.
The mixing drum is installed on the KamAZ chassis at an angle of 10 degrees. Special spiral blades are installed inside it. When they rotate in the opposite direction, the concrete mixture is unloaded. Concrete flows out of the container through installed gutters. One of them is installed directly in the concrete mixer, and the second is pulled to the machine at the unloading site. Special pumps can also be used for these purposes.
The mixing drum drive can be mechanical or hydromechanical. In the first case, power is taken from an autonomous power plant through a mechanical transmission system. When using a hydromechanical drive, power is taken off through a hydromechanical transmission.
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.
