Recently, the environmental impact assessments of four concrete projects in Zhangjiakou City, Hebei Province and Xiangtan County, Hunan Province have been approved.
as follows:.
precast-tech
precast-tech
Concrete Quality Control and Management System
(2) We should establish a sound quality assurance system and a sound construction quality inspection system, strengthen the inspection of each process in the construction process, and keep records according to regulations.
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Research on Precise Design of Concrete Mix Proportion and Performance Improvement Technology for Cross River Bridge
The performance evaluation indicators of concrete are key parameters for measuring the quality of concrete, which directly affect the reliability and service life of concrete structures, mainly including the workability, strength, durability, and economy of concrete, as shown in Table 1.
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Concrete industry in 2026: Winter has not yet passed, but spring is in sight
As practitioners in the concrete industry, we have gone through a difficult time together in the past two years.
The sluggish real estate market, insufficient project funding, worsening market competition, and meager or even loss making corporate profits undoubtedly put pressure on many mixing plant owners and management, and even begin to doubt whether this industry is still worth sticking to.
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Factors affecting the performance of C25 permeable concrete
Climate conditions (such as freeze-thaw cycles) may cause freeze-thaw damage, which needs to be prevented by optimizing mix proportions (such as adjusting aggregate gradation) or adding antifreeze agents.
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Why does concrete need maintenance? Summary of 15 years of concrete industry experience!
When pouring concrete, the skilled workers followed the specifications for operation, and the vibration was done very solidly, and the surface was also applied very neatly.
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The Effect of Granite Waste Content on the Performance of Concrete with Different Strength Grades
According to the report of the World Business Council for Sustainable Development (WBCSD), the world’s annual concrete production exceeds 25 billion tons, with a huge demand.
Fine aggregates can reduce cement content by 10% to 15% through gradation optimization, while ensuring the dimensional stability of concrete.
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Precautions for Construction of Commercial Concrete
Thank you very much for using our company’s commercial concrete for your project.
Our company attaches great importance to your project, strictly organizing production in accordance with relevant regulations and requirements, from the design and control of raw materials entering the factory, mix proportions, to the control of concrete leaving the factory.
However, concrete is often affected by various factors during delivery and use.
If effective measures are not taken during construction and maintenance, it may cause quality problems.
Therefore, our company proposes the following suggestions for concrete construction:.
Research on Quality Control Points of Mechanized Sand Concrete
Tang Kaijing and others studied basalt mechanism sand, river sand, and quartz mechanism sand, and found that different rock types of mechanism sand have a significant impact on the workability of C50 concrete.
Differences in morphology and gradation are the reasons for the decrease in workability.
Donza et al.
conducted a comparative study on the workability of limestone, granite, dolomite mechanism sand, and natural sand concrete, and found that the chemical mineral composition, rock type, bulk density, and internal structure of the mechanism sand parent rock are the main factors affecting the performance of mechanism sand.
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Common problems and prevention measures for autumn construction of concrete
The climate characteristics of autumn show significant changes in temperature, humidity, and wind speed (daily average temperature of 5-20 ℃, temperature difference between day and night of 8-15 ℃, relative humidity of 40% -80%), which directly affects the concrete from mixing, pouring, curing to hardening and forming.
According to the “Winter Construction Regulations for Building Engineering” (JGJ/T104-2011), concrete quality problems caused by climate factors in autumn account for more than 35% of the total annual amount, with particularly prominent issues such as cracks, insufficient strength, and surface defects.
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