Industrial solid waste accumulates into mountains, and the durability of concrete encounters bottlenecks.
The “dual carbon” goal has become an industry must answer question – how to turn billions of tons of industrial solid waste into treasure?.
precast-tech
precast-tech
Problems and Solutions in Concrete Production and Construction
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What should be done when the raw materials cannot be immediately stopped and the supply of concrete cannot be interrupted?.
[Testing Method] Testing Method for Moisture Content of Anti Radiation Concrete Bonding
This standard is applicable to radiation protection concrete used in radiation protection engineering.
The method for determining the bound water content in radiation resistant concrete is specified.
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Must see for Changsha project! Reliable concrete supplier, identify Hunan Guangdong concrete, ensure stable quality and progress
In the construction of various projects such as buildings, municipal engineering, and roads in Changsha, selecting the right formal and reliable concrete enterprises is the core link to establish a solid foundation for project quality and ensure smooth progress of construction.
Hunan Yue Concrete Construction Engineering Co.
, Ltd.
, as a local professional concrete mixing plant operation service provider in Changsha, focuses on the full chain service of commodity concrete research and development, production, and distribution.
With stable production capacity, strict quality control, and efficient distribution system, it has become a trusted concrete cooperation preferred by engineering parties in Changsha.
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How to improve the work efficiency of concrete mixing plants
The working principle of concrete mixing equipment varies.
This article only analyzes the double horizontal shaft mixing equipment with a middle storage hopper.
The working principle is as follows: firstly, a series of aggregates such as pebbles and sand are accurately calculated and measured, transported to the middle storage hopper through a conveying device, and then dropped into the mixer from the middle storage hopper.
Cement and curing agent powders are transported to the powder hopper through a screw machine, and then combined with the aggregates in the middle storage hopper; Water is accurately measured using specialized measuring tools, and the mixture mixed with some additives needs to be fed into the mixer through a transfer hopper and a conveying pipeline; Then turn on the mixer for stirring; Finally, place the finished product into the concrete transport vehicle.
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Continuously learning about concrete related knowledge
On the one hand, the main purpose of watering and curing concrete is to maintain sufficient moisture on the surface of the concrete structure within the specified time, which is the basis of cement hydration reaction.
On the other hand, only by controlling the external conditions of watering and curing concrete can it be conducive to temperature control and avoid the occurrence of cracks.
In the specific process of concrete watering and curing, operators often have a misunderstanding of the purpose of concrete watering and curing, and only understand it as a prescribed operation, without much value to the concrete structure itself.
Before watering and curing concrete, construction personnel should be organized together to learn the process and principles of concrete watering and curing, clarify the purpose of concrete watering and curing, increase the attention of construction personnel to concrete watering and curing, and guide specific behaviors in concrete watering and curing work, thus achieving the improvement of the quality of concrete watering and curing work.
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Concrete always cracks, it turns out this is the reason!
*Disclaimer: The content contained in this official account is for reference only.
Readers should not simply accept the information of official account instead of their own independent judgment, but should make decisions and bear risks independently.
This official account will not bear any responsibility for any loss caused by the use of the content contained in this account.
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Guarding the bottom line of takeoff and landing safety: Causes and long-term prevention measures for cracks in airport concrete pavement
The concrete pavement of the airport is directly related to the safety of aircraft takeoff and landing and the safety of vehicle passage within the airport area, and has extremely high requirements for structural strength, durability, and construction quality.
During the construction and long-term operation process, various types of cracks and diseases are easily generated on the pavement due to the influence of loads, temperature changes, foundation conditions, construction processes, and environmental factors.
If not treated in a timely manner, they will continue to expand and deteriorate, causing secondary problems such as water seepage and erosion, base detachment, and panel fragmentation, laying hidden safety hazards for operation.
The main causes of pavement cracks are internal structural factors and external environmental load factors.
Large area concrete hydration temperature difference and shrinkage deformation can also induce early cracking.
This article combines the actual operation and maintenance of airport runway, sorts out the formation mechanism of various typical cracks, proposes targeted technical solutions for source prevention and disease repair, and introduces the application advantages of special grouting materials in combination with daily maintenance conditions, providing practical reference for the maintenance and treatment of airport concrete pavement.
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Research on the Reasons for Quality Fluctuations of Pre mixed Concrete in Construction and Precise Control Measures
Pre mixed concrete, as an indispensable material in modern construction, has the advantages of high production efficiency, stable quality, and convenient construction.
It is concrete that is pre mixed in a mixing plant with cement, sand and gravel, water, additives, and admixtures according to a certain mix ratio, and then transported to the construction site for direct use.
However, due to the complexity of raw material quality, mix design, production process, transportation, and construction, the quality of ready mixed concrete is prone to fluctuations, such as unstable slump, large strength dispersion, and the occurrence of segregation and bleeding.
These problems not only affect the construction performance of concrete, but also reduce the quality and durability of concrete structures.
Therefore, it is of great practical significance to study the causes of quality fluctuations in ready mixed concrete and take effective and precise control measures.
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What is the significance and purpose of concrete 7-day strength, 28 day strength, critical strength, test block under the same conditions,
In the construction of concrete structures, common tests include strength under 28 standard curing conditions, critical strength during winter construction, strength of test blocks under the same conditions, demoulding strength test blocks, and even 7-day strength test blocks.
What is the significance and purpose of these tests?.