The Weighing Control Principle of Concrete Batching Machine

Concrete batching machine is a widely used concrete preparation equipment in the construction industry, whose core function is to accurately weigh and mix various raw materials according to predetermined proportions. This article will provide a detailed introduction to the weighing control principle of concrete batching machines.

Composition Of Concrete Batching Machine
The concrete batching machine usually consists of the following main parts: storage hopper, feeding device, weighing system, control system, and mixing system. The storage hopper is used to store various raw materials, such as sand, stone, cement, etc. The feeding device is responsible for conveying raw materials to the weighing system. This weighing system is the core part of the concrete batching machine, used to accurately measure the weight of raw materials. The control system is responsible for the operation and control of the entire batching machine, ensuring the accuracy and stability of the batching process. The mixing system mixed various raw materials into concrete. Concrete batching machine is one of the most important composition of concrete mixing machinery.

Weighing System Principle
Weighing Method
Concrete batching machines usually use lever or electronic weighing methods. Lever weighing utilizes the principle of lever balance to calculate the weight of materials by measuring the displacement of the lever. Electronic weighing uses sensors and electronic technology to convert the weight of materials into electrical signals, which are then displayed on electronic instruments.

Control Principle
The weighing control system of the concrete batching machine usually adopts a closed-loop control method. In closed-loop control, the output signal of the controller directly controls the operation of the feeding device, while continuously adjusting the feeding speed of the feeding device through the feedback signal of the weighing system to ensure that the actual weight is consistent with the set weight.

Precision Control
In order to ensure the accuracy of batching, concrete batching machines usually adopt various measures to reduce errors. For example, using high-precision sensors and instruments to improve measurement accuracy. Reduce feeding errors by dynamically adjusting the feeding speed.

Automatic Control
Concrete batching machines are usually equipped with an automatic control system, which can achieve functions such as automatic alarm. The automatic control system greatly improves the automation level of the batching process and reduce the impact of human factors on batching accuracy.

In summary, the weighing control principle of concrete batching machines is mainly achieved through high-precision weighing systems and close-loop control systems. By accurately measuring and controlling the weight of various raw materials, the quality and stability of concrete can be ensured, thereby improving the safety and reliability of construction projects.

The Application of Self Loading Concrete Mixer Trucks In Mountain Road Construction Projects

Introduction

With the continuous progress of engineering technology, self loading concrete mixer trucks are playing an increasingly important role in mountain road construction projects. This equipment combines the functions of concrete mixing and transportation, effectively solving the problem of concrete transportation in mountain road construction projects. This article will provide a detailed introduction to the application of self loading concrete mixer trucks in mountain road construction projects.

Advantages of Self Loading Concrete Mixer Trucks

Efficient and convenient: The self loading concrete mixer truck can directly mix and transport concrete on the construction site, reducing the transportation process of concrete and improving work efficiency.
Strong adaptability: The self loading concrete mixer truck is suitable for various complex terrains, especially in mountain road construction projects. It can overcome difficulties such as rugged terrain and narrow roads to ensure the smooth transportation of concrete.

Cost reduction: The use of self loading mixer can reduce the cost of manual handling and multiple transfers, and lower the overall cost of the project.

Environmental protection and energy conservation: The self loading concrete mixer truck can effectively reduce concrete waste and pollution during operation, meeting the requirements of environmental protection and energy conservation.

The Application of Self Loading Concrete Mixer Trucks In Mountain Road Construction Projects

Construction Preparation

During the construction preparation stage of the mountain road construction project, the self loading concrete mixer truck needs to undergo corresponding debugging and preparation work. This includes inspection, maintenance, and debugging of equipment to ensure that it can operate normally during the construction process.

Concrete Mixing

The self loading concrete mixer truck has a mixing function and can mix concrete on the construction site. According to engineering needs, the mix proportion can be adjusted to meet the requirements of different strength and performance of concrete.

Concrete Transportation

Self loading concrete mixer trucks can directly transport the mixed concrete to the construction site. In mountain road construction projects, due to the complex terrain, the use of self loading concrete mixer trucks can effectively solve the problem of concrete transportation.

On Site Pouring

Pour the concrete directly from the self feeding concrete mixer truck to the construction site. Due to the completion of mixing during transportation, concrete can be poured immediately, improving construction efficiency. At the same time, it also avoids the problems of concrete segregation and waste caused by multiple transfers.

Quality Control

In mountain road construction projects, quality monitoring is particularly important. The application of self loading concrete mixer trucks can achieve real-time monitoring of concrete quality and ensure that the engineering quality meets the standards. By adjusting the mix ratio, controlling material quality, and other measures, the quality stability of concrete can be effectively improved.

Construction Safety

The operation and maintenance of self loading concrete mixer trucks require professional personnel. During the construction process, it is necessary to strictly follow the operating procedures to ensure construction safety. At the same time, regular inspection and maintenance of equipment can reduce the occurrence of equipment failures and improve its service life.

Conclusion
In summary, self loading concrete mixer trucks have broad application prospects in mountain road construction projects. It can not only improve work efficiency and reduce costs, but also solve the problem of concrete transportation in complex terrains. Through reasonable use and maintenance, the advantages of self loading concrete mixer trucks can be fully utilized to provide strong support for mountain road construction projects. With the continuous progress of engineering technology, self loading concrete mixer trucks will play a more important role in future mountain road construction projects. (You can also find the self loading concrete mixer manufacturer to get more details.

Introduction on Equipment Needed for Asphalt Road Construction

When building roads and laying asphalt, a range of specialized equipment is needed. These devices play a key role in ensuring construction efficiency and quality. The following is about the equipment needed to lay asphalt in the construction of roads:

Basic Equipment

Asphalt mixing station: used to prepare asphalt mixture, usually including heating, mixing and batching devices, to ensure the quality and supply of asphalt mixture. Such as Luton drum type asphalt plant.

Asphalt transporter: Used to transport the prepared asphalt mixture from the mixing station to the construction site to ensure the freshness and temperature of the asphalt mixture.

Pavers: Large machines used to evenly lay asphalt mixtures on roads. It has automatic feeding, leveling and compacting functions to ensure the smoothness and thickness of the road surface.

Auxiliary Equipment

Roller: Used for compacting the newly laid asphalt pavement to improve the compactness and durability of the pavement. According to the need, you can choose different specifications and functions of the roller.

Cutting machine: During the laying process, the asphalt pavement is precisely cut to meet the road design requirements. This helps to ensure the smoothness of the joints and the overall beauty of the pavement.

Filling machine: used to fill the joints of asphalt pavement, prevent water from entering the pavement structure, and extend the service life of the pavement.

Asphalt distributor: Used to evenly spread asphalt or other adhesives on the road surface to enhance the bond between old and new materials.

Road marking equipment: including the marking car and hot melt kettle, etc., used for marking traffic marks and arrows on the road surface to improve traffic safety and sign clarity.

Cleaning equipment: including sprinklers and sweepers, etc., used to keep the construction site clean and wet, to prevent dust and debris from affecting the quality of asphalt pavement.

Testing instruments: including thermometers, hygrometers and road thickness detectors, which are used to monitor various parameters in the construction process in real time to ensure that the construction quality meets the standard requirements.

Modern Equipment

With the continuous development of science and technology, modern road laying equipment is also more and more used in actual construction. For example:

Unmanned pavers: Through advanced sensors and automatic control systems to achieve automatic driving and precise control of pavers, improve construction efficiency and accuracy.

3D printing technology: The use of 3D printing technology to prepare asphalt mixture can achieve personalized customization and rapid manufacturing, bringing more innovation possibilities for road laying.

Intelligent road roller: equipped with sensors and data analysis system, can monitor the compaction process and the quality of the road in real time, to provide accurate data support for construction personnel.

Environmental protection equipment: such as asphalt waste gas treatment equipment and low noise construction equipment, aimed at reducing environmental pollution and noise nuisance in the construction process.

To sum up, a variety of professional equipment is needed when building roads and laying asphalt. These devices play a vital role in ensuring the quality and efficiency of construction. With the continuous progress and innovation of science and technology, more modern equipment and intelligent technology will be applied to the field of road laying in the future, bringing more convenience and benefits to construction.

How Did The Pump Obtain The Concrete To The Dubai Tower

To understand how concrete is provided to the tower, very first determine the steps of the concrete pump.

In the process of pumping concrete, the piston in the hydraulic cylinder in the hydraulic system, respectively in the two cylinder reciprocating motion backward and forward, driven by the piston rod piston in the concrete cyndrical tube, the concrete in the receptacle and also pumped along the laid pipe pump, via the pressure action to the building requires.

Next, let’s have a look at how the globe was utilized to develop the Burj Dubai!

Dubai Tower Introduction

Burj Dubai is 828 meters high, with a complete financial investment of more than $1.5 billion, slowly making use of light steel framework from 156 floors, with concrete pumping to 611 meters on the 160 floor.

Concrete Quality Number As Well As Total Quantity

Level 26 (95m)
Walls: C80A (20mm)
Pieces: C50

Level 126 (452m)
Walls: C80 (14mm)
Pieces: C50

Level 160 (611m)
Wall Surfaces: C60 (14mm)/ C80 (14mm)
Pieces: C50

Facility Core (611m) 68771m3
Wing South (502m) 36541m3
Wing East (442m) 31419m3
Wing West (390m) 27743m3

Overall: 164474m3

Secret Technological Points Of The Burj Dubai Concrete Pumping Plan

( 1) Supply the pumping equipment that can be pumped to an elevation of 611 meters.
( 2) A pumping pipeline that can endure such a high pressure.
( 3) The addiction and securing of pipes should minimize the loss of stress.
( 4) Pipeline replacement as well as cleaning.
( 5) The concrete proportion that meets both the strength needs and also the pumping requirements.
( 6) Temperature control and also setting time control of concrete.

Burj Dubai Concrete Pumping Plan

Putzmeister Site Devices:
Two UHV hauling pumps BSA 14000 SHP-D
1 high-pressure pump, BSA 14000 HP-D
3 collections of 28 m cloth pole MX 28-T
3 sets of 28 m cloth poles
1 set of 32 m cloth pole MX 32-T
Regarding 1700 m ZX 150,250 bar high pressure tube
cut-off valve
Unique cleaning equipment

The concrete pump design site requirements


Concrete pump setting place, the site needs to be smooth and also solid, the roadway is smooth, practical product supply;
Near the pouring site, practical for procedure, easy to match the pipeline;
Near to drain centers and risk-free and also reliable supply of water and power supply equipment;
Tiny interference with other mechanical as well as hand-operated construction procedures;
Within the procedure series of the concrete pump, there shall be no barriers such as the high-voltage line.

Setup of the pulling pump

Delivery pipe plan
Link setting of the concrete pump as well as the delivery pipeline:
( 1) Straight connection: the conveying pipeline and the concrete pump right into a straight line
( 2) U-shaped link: that is, 180 is attached, as well as the outlet of the pump is linked to the communicating pipeline via two 90 bends
( 3) L-shaped link: the electrical outlet of the pump is connected to the communicating pipeline via a 90 bend pipe, which is perpendicular to the concrete pump

Layout of towel pole
Cloth rod:
( 1 ) Manual cloth rod RV10, appropriate for floor concrete towel, industrial plant concrete towel, require to be relocated by tower crane, low cost, and also made use of with the drag pump
( 2) Fixed cloth rod
Version: MX 32-4 (32 m 4 arms), MX 31-3
Relevant to: (1) skyscrapers, which can be climbed
Applicable to (b) infrastructure, nuclear power, industrial plant, chemical industry, etc.

Pumping system: hauling pump + distribution pipe + circulation rod.


Specifically developed pumping devices.
BSA 14000 SHP-D Ultra-high pressure pump attended to very top-level jobs.
The 470kW Caterpillar engine.
The maximum electrical outlet concrete pressure is 40MPa
The academic optimum variation is 71 cubic meters/ hour

Exactly How To Set Up A Concrete Drag Pump

Compute the pumping concrete stress according to the pumping distance and also elevation
Beginning pressure of 20 bar

  • Total pipeline length per 10m 1 bar (total length = straight pipe length + vertical pipe length)
  • Upright shipment tube every 4m 1 bar
  • 1 bar per 10 bars.
  • 90 degree bend 11 bar
  • 45 degree bend 10.5 bar
  • Tail rubber pipe: 1 item of 2 bar
  • Safety and security get of 10%
    = gross pressure

Fabric rod without weight needed
MX 32-T without weight (facility core)
3 × MX 28-T without weight (wings)

Wear-resistant ultra-high stress line
The ZX type DN150 delivery pipe
The wall thickness gets to 11mm
The cross-sectional location raised by 44%, and also the stress decreased by about 25%
Capacity to withstand a pressure of 250bar
ZX type interface, better sealing efficiency

Transmission pipe system

Pipe addiction device

Unique line replacement tool
When pumping to the acme, the primary pipeline plus concrete weight goes beyond 55t!
Putmeister established specialized training tools
The whole upper pipeline is lifted by the hydraulic cyndrical tube, and the lower pump pipe can be replaced.

25MPa stop shutoff
Quit valve: in the skyscraper pumping, the application of stop shutoff, utilized to prevent concrete backflow, when the concrete blocked pipeline with the quit valve to shut the concrete, and then treat the obstructed pipe.

Pipe style principles
Must reduce the length of the pipeline, utilize much less bending pipe and tube;
When piping vertically upward, the length of the ground horizontal pipeline ought to be more than 15 meters, the 180 level bending pipe needs to be set at the outlet of the towing pump, and the quit shutoff ought to be evaluated the sharing pipeline 3|6m at the concrete pump discharge port;
Horizontal pipe should be fixed firmly with bracket, system cushion, wall mounts and so forth at a certain range;
The vertical pipe should be dealt with at the staying opening in the top of the wall surface and column or flooring with ingrained components, as well as each pipe on the wall as well as column will not be less than one fixed point;
In each flooring plate scheduled opening needs to be taken care of;
The aggregate is less than 1/ 3 of the pipe size, as well as the 125 tubes can only be 40mm gravel;
High pressure pumping with high pressure pipe, concrete pumping is challenging can be changed by a huge diameter sharing pipeline;
No slurry shall leakage at the clamp of the pipeline joint.

Cleaning Tool

Concerning 15m3 concrete needs to be cleaned for pumping to maximum.

Repetitive examination of validated concrete ratio.
Putzmeister’s experienced experts and also customers have actually created a concrete that satisfies both the strength needs and has great pumping performance.

What requirements must the pumping concrete be satisfied (fluidness, communication, water retention).
Ratio of the maximum bit dimension of the coarse aggregate to the shipment tube size:
When the pumping height is listed below 50M, the crushed rock must not be above 1:3 and also the pebbles need to not be above 1:2.5; when the pumping elevation is 50|100M, it must be 1:3|1:4; when the pumping height is above 100m, it needs to be 1:4|1:5;
Fine accumulation should be moderate sand, sand with 0.315 mm sieve opening, should not be less than 15%, the sand rate is 38%|45%;
Pump concrete need to be mixed with suitable amount of fly ash or ore powder as well as other admixtures to improve the pumping efficiency;
Pressure bleeding examination, the family member stress bleeding price at 10S S10 should not go beyond 40%;
The dose of concrete + admixture (such as fly ash) is greater than 300kg;
The ratio of water as well as cement (glue) is 0.4|0.6;
Depression of 100-220 mm;
Option worth of concrete downturn for different pumping heights:
Pump elevation (m) below 30 and also over 30|60 60|100 100
Slump (mm) 100|140 140|160 160|180 180|200

Including an ideal quantity of pumping agent (admixture) has high efficiency water reduction, slow-moving coagulation, gas absorption effect

Substitute Problem


600 m straight delivery line to assess the taking place pressure
Calculate the pumping pressure:
Expected Concrete Stress:
C80A/20 up to 250m: 139bar
C80/14 as much as 450m: 176bar
C60/14 up to 600m: 206bar
C50/14 approximately 600m: 196bar

Real Building And Construction Website

Raw material quality control:, a part of the water is replaced with ice
Concrete temperature control: measure the concrete temperature level routinely
Concrete and also workability control: regular slump screening
Full-process expert tools upkeep
Set up the ETS remote system to recognize the working problem of the concrete pump.

Use the ultrasonic instrument to identify the condition of the sharing tube as well as learn the hidden dangers in time.

The Birth of Record

In the Burj Dubai (Burj Dubai Tower), it is typically pumped at night.
In early November 2007, after regarding 40 mins of travel in the pipeline, the concrete was pumped to an unprecedented elevation- -606 meters, as well as a new globe record of the upright concrete pumping height was birthed!

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