Concrete introduction

Definition of Concrete: Concrete, abbreviated as “concrete”, is a general term for engineering composite materials that are cemented into a whole by cementitious materials. The term concrete usually refers to cement as a cementitious material, sand and stone as aggregates; mixed with water (which may contain admixtures and additives) in a certain proportion and stirred to obtain cement concrete, also known as ordinary concrete. Concrete is widely used in civil engineering.

Classification of concrete:

(1) According to the mixture: dry hardness/semi-dry hardness/plasticity/fluidity, etc.;
(2) According to the construction process: grouting/spraying/rolling/pumping, etc.;
(3) According to the density of concrete: heavy/ordinary/lightweight;
(4) According to the use function: structure/insulation/decoration/waterproofing/fireproofing/hydraulic engineering/radiation protection;

Concrete batching plant introduction

Definition of concrete batch plant: Concrete mixing plant is a combined device used for centralized mixing of concrete, also known as concrete prefabrication plant. As concrete batch plants have a high degree of mechanization and automation, their productivity is also high, and they can ensure the quality of concrete and save cement.

Concrete batching plants are often used in large and medium-sized water conservancy, power, bridge and other projects with large concrete engineering volume, long construction period and concentrated construction sites.

Classification of concrete batching plant

There are 6 common types of concrete batching plants, namely
1. Mobile concrete batch plant
2. Fixed concrete batch plant
3. Concrete belt batch plant
4. Concrete hopper batch plant
5. Concrete foundation-free batch plant
6. Dry-mix concrete batch plant

Stationary Concrete Batch Plant

HZS25,HZS35,HZS50,HZS60,HZS75,
HZS90,HZS120,HZS180,HZS240,HZS360 High Efficiency And Stability, With High Production Capacity

Mobile concrete batching plant

YHZS25,YHZS35,YHZS60,YHZS90,
YHZS120 Flexible & Mobile, With Quick Relocation,Quick Installation & Strong Adaptability

Foundation Free Concrete Batch Plant

FHZS25,FHZS35,FHZS50,FHZS60,
FHZS75,FHZS90,FHZS120,FHZS180,
FHZS240,FHZS360 No Basic Installation Required

Mobile concrete batch plant

A mobile concrete batching plant is a mobile concrete production device that can be quickly installed and disassembled at different locations, making it easy to transfer between multiple projects.
The mobile concrete batching plant adopts a modular design, integrating the mixing host, batching system, control system, etc. into the trailer chassis for overall towing and transportation. The folding belt conveyor and screw conveyor occupy a small area when unfolded.

Pre-installed hydraulic legs and adaptive stabilizers support deployment on terrain with a slope of ±5°.

Mobile concrete batch plant is suitable for temporary or remote construction sites, road maintenance and short-term infrastructure projects, as well as customers who frequently change sites or need small batch production.

Stationary concrete batch plant

A stationary concrete batching plant is a concrete production device installed on a fixed foundation, mainly used for long-term, large-scale concrete production. Static concrete batch plants are usually equipped with large-capacity silos, aggregate silos, and twin-shaft or planetary mixers.

Integrated dual-mode control system, using PLC touch screen and physical key operation to improve operator adaptability. Remote monitoring and control based on the Internet of Things can monitor the status of the equipment in real time.

Stationary concrete batching plant is suitable for large precast component plants, commercial concrete plants and water conservancy project sites, infrastructure construction such as highways, bridges, tunnels, etc..

Concrete belt batch plant

Concrete belt batching plant is a fixed concrete batching plant that uses a belt conveyor system for aggregate transportation.

Belt conveyor concrete batching plant Aggregates are transported by a belt conveyor system to ensure smooth, continuous operation and high transportation efficiency. Equipped with a high-precision weighing system, it provides accurate and consistent batching.

Belt type concrete batching plant is suitable for large-scale construction projects such as bridges, towers and high-demand applications.

Concrete hopper batch plant

Concrete hopper batching plant is a fixed concrete batching plant that uses a hopper lifting system for aggregate conveying.The hopper lifting system of the concrete batching plant hopper has a low feeding height and a short overall length of the equipment. The compact design saves space.

It is suitable for construction sites with limited space and small and medium-sized construction projects.

Concrete foundation-free batch plant

Concrete foundation-free batching plant is a kind of batching plant that does not require traditional concrete foundation fixing and adopts modular steel structure frame. The structure does not require traditional concrete foundation fixing and can be directly installed on the flat and compacted ground.
Pre-installed hydraulic legs and adaptive stabilization device support deployment on ±5° slope terrain. Concrete foundation-free batching plant only takes 24 hours from transportation to production.

Foundation free concrete batching plant is suitable for temporary or short-term projects, such as road maintenance and bridge construction.

Dry-mix concrete batch plant

A dry batch concrete plant is a plant that meters and batches all raw materials (cement, sand, aggregates and admixtures) without adding water. Dry batch concrete plants do not have a central mixer, and all raw materials are mixed and watered on the way to the construction site. The structure is simpler and the initial investment is lower.

Dry batch concrete plants are suitable for small and medium-sized buildings, rural or remote areas, and projects that require basic concrete but do not have strict consistency standards.

Components of a concrete batching plants

1. Concrete mixer

(1) Twin-shaft mixer

The twin-shaft concrete mixer is a forced mixing equipment equipped with two horizontal parallel mixing shafts. The twin-shaft mixer transmits power to the mixing shaft through the motor-driven reducer, and the blades on the mixing shaft rotate to force the concrete raw materials to mix. The twin-shaft design of this mixer makes its mixing efficiency high and the mixing effect good, and it can quickly mix the raw materials evenly.

The twin-shaft concrete mixer is mainly used for mixing various powdered materials, that is, to produce various powdered mixing materials. The aggregate of the concrete twin-shaft mixer can be wet fly ash, calcium carbide mud, phosphogypsum, sand and gravel, slag, etc.

(2) Vertical shaft mixer

Vertical shaft mixers are also forced mixing equipment. Their mixing shaft is perpendicular to the mixing drum, and the concrete raw materials are forced to mix through planetary or worm-type mixing devices. This type of mixer is widely used in the mixing of high-performance concrete, high-strength concrete, high-grade concrete, etc.

Common types of vertical shaft mixers are planetary mixers and worm-type mixers.

2. Aggregate weighing system:

(1) Centralized weighing batching machine

The centralized weighing and batching machine of concrete mixing plant is an important equipment for accurate weighing and batching in concrete batching plant. It is used in the concrete production process to accurately weigh and batch various aggregates (such as sand, stone, etc.) according to the set mix ratio.

The centralized weighing and batching machine of concrete mixing plant usually consists of a storage hopper, a weighing system, a conveying system and an electrical control system.

(2) Individual weighing batching machine

The individual weighing and batching machine of concrete mixing plant is a device used in the concrete production process to individually and accurately weigh various aggregates (such as sand, stone, etc.). The individual weighing and batching machine of mixing plant is equipped with a weighing unit for each type of aggregate to ensure that each type of aggregate is accurately weighed and then fed into the mixer one by one for mixing.

This weighing method is known for its high precision and can significantly improve the accuracy of concrete mix ratio.

3. Water, cement/fly ash, additive weighing system:

The water weighing system is used to accurately measure the amount of water required in the concrete production process. The system usually consists of a water tank, a water pump, a pipeline, a water weighing bucket and a control system. The water scale mainly uses the water pump pressure to release water, which can shorten the release time. There are generally two ways to measure water: volumetric and weighing, of which the weighing method is more accurate.

The weighing system for cement and fly ash is used to accurately measure these powdered materials. Cement and fly ash are usually stored in powder tanks, and the powder is fed into the weighing bucket for measurement through a screw conveyor. When there are multiple powders, cumulative weighing or individual weighing can be used. The powder metering device completes the weighing of the powder until the preset value of the powder is reached and then transfers it to the mixing device.

The additive weighing system is used to accurately measure liquid admixtures. Admixtures are usually stored in liquid storage tanks and accurately weighed by a metering device. The metering accuracy of additives has an important impact on the quality of concrete, so high-precision weighing equipment is usually used.

4. Aggregate lifting system

(1) Lifting bucket

The concrete mixing station lifting bucket, also known as the bucket elevator, is a device that transports materials in a vertical or nearly vertical direction. The mixing station lifting bucket lifts materials from a low place to a high place through a series of buckets fixed on a traction chain or belt.

(2)Flat belt/bucket belt

The concrete mixing station flat belt, also known as the horizontal belt conveyor, is a device that transports materials in a horizontal or nearly horizontal direction. The mixing station flat belt drives the conveyor belt through a motor-driven roller to transport materials from one end to the other.

The bucket belt, also known as the bucket belt conveyor, is a belt conveyor with a bucket. The bucket belt conveyor combines the advantages of the flat belt conveyor and the lifting bucket, and realizes the lifting and transportation of materials by installing a bucket on the conveyor belt.

5. Concreet batch plant powder storage system

Mixing station cement silo

Cement silo is a special equipment used to store cement in concrete mixing plants. Cement silo is usually a large cylindrical or spherical steel structure container equipped with feed port, discharge port, dust removal device and material level sensor, etc.

6. Concreet batch plant powder conveying system

Screw conveyor

Screw conveyor is a device that uses rotating spiral blades to move materials along the casing to achieve material transportation. Screw conveyors are widely used in various industrial fields, including concrete mixing plants, mining, chemical industry, grain processing, etc.

7. Pneumatic system of concrete mixing station

Components of pneumatic system: air compressor, air rope, air storage tank, air distribution bag, cylinder.

8. SMAT concrete control system

Concrete mixing plants include two types: fully automatic computer control and semi-automatic computer control.