Construction Precast Development
Precast News From China
According to the industry standard “Construction Code for Building Engineering” JGJ104-97 in China, the construction process where the daily average outdoor temperature remains below 5 ° C for 5 consecutive days is called winter construction.
When the project enters the winter construction stage, corresponding winter construction measures should be taken for concrete pavement engineering.
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Concrete, as the core material of construction engineering, has a direct impact on structural safety and durability in terms of its strength.
The maintenance temperature becomes a key factor in regulating the strength development by affecting the cement hydration process.
In practical engineering, unexpected fluctuations in concrete strength often occur at different environmental temperatures, leading to potential quality hazards in the project.
Clarifying the correlation between maintenance temperature and strength development, revealing the influencing mechanism, and formulating optimization strategies are of great significance for improving engineering quality, which is also the core purpose of conducting relevant research.
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During the construction phase, the early concrete strength was low, and the formwork and steel bars were stacked on the beams and slabs too early, causing deformation and cracking due to the load.
When the concrete strength is low, removing the formwork too early can cause cracks due to the self gravity of the structure.
Therefore, during the construction process, it is not advisable to stack steel bars and formwork for loading too early.
The dismantling of concrete structures shall be strictly carried out in accordance with relevant standards to avoid severe cracks in concrete beams and slabs caused by premature dismantling, impact on young concrete, and insufficient steel reinforcement protection layer.
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Concrete drainage pipes are widely used in our daily lives, mainly for drainage and sewage treatment in urban areas.
Therefore, the installation and construction of concrete drainage pipes are particularly important.
So what is the installation and construction of concrete drainage pipes like? The installation process of concrete drainage pipes is relatively strict, and sufficient preparation must be made before construction.
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Recently, a friend shared that the article they wrote is relatively simple, mainly because the target audience is mainly frontline production management personnel.
I will try my best to go a little deeper and hope that colleagues can correct me.
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This article provides a comprehensive analysis of precast concrete buildings, first introducing their narrow and broad definitions, mentioning core features such as standardization and scaling, as well as the development process from traditional to new technology systems in China.
It elaborates on mainstream structural systems such as precast frames and shear walls, as well as various types of precast components.
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Four hours after the concrete pouring of the main side wall of Wenyang Road Station, Cao Wenwu had already stood next to the initially set side wall with a thermometer.
The numbers on the screen made him furrow his brow: the temperature of the C45P8 concrete core was 52.
9 ℃, while the surface was only 31.
8 ℃.
The temperature difference of 25 ℃ was like an invisible crack, growing bigger and bigger in his heart.
As the team leader of the concrete team in Section 06 of Qingdao Metro Line 15, this is not the first time we have encountered a similar situation this month.
Looking at the temperature measurement data that exceeded the standard, it was as if he could see the slow development of cracks inside the concrete, which was another challenge he and his team encountered in the trial of decorative concrete.
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In the ground paving of public spaces such as amusement parks, squares, and parks, colored concrete is becoming the preferred material for modern landscape design due to its excellent durability, aesthetic expression, and functionality.
This innovative paving technology not only perfectly integrates modern aesthetics and natural charm, but also achieves effective distribution and guidance of pedestrian flow through scientific design, meeting the needs of high passenger flow scenarios.
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The site of Lei Zhi Zao in the United Arab Emirates (Dubai) has been officially completed and put into use.
This project will serve multiple major infrastructure projects in the Middle East, providing local users with a digital management solution for the entire lifecycle of concrete based on full support from Apple, Android, and HarmonyOS ecosystems.
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(1) Fully responsible for the daily work of the mixing plant, including safety production, technical quality, materials and equipment, business management, logistics support, and other related tasks.
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