Construction Precast Development
Precast News From China
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As an experienced engineer who has been working on bridge construction sites for decades, I am well aware that the appearance quality of precast T-beams is not only a facade project, but also a direct reflection of their internal quality.
A T-shaped beam with a smooth appearance and uniform color often means that its internal quality can withstand the test.
The beams with honeycomb and pockmarks on the surface and staggered cracks may also have hidden quality hazards.
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Concrete cracks are a common problem in the engineering field, which can be divided into two types based on their properties: non stress cracks (temperature, shrinkage type) and stress cracks.
They not only affect the structural appearance and waterproof performance, but can also reduce the bearing capacity and shorten the service life in severe cases.
Therefore, it is necessary to control risks throughout the entire process.
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1、 Various diseases on the original concrete slab surface need to be treated, and the treatment plan will be determined according to the actual situation.
But the joints on the original concrete slab must be treated, the debris inside must be removed, and filled with pure asphalt.
In addition, a modified emulsified asphalt adhesive layer must be sprayed before laying asphalt concrete on the concrete surface.
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If architecture is the backbone of a city, then concrete pouring is the blood that gives it life.
For a long time, the vibration and curing process in concrete pouring has been a pain point in construction management – the quality of vibration and curing is limited by worker experience, weather conditions, etc.
, which not only affects structural safety but also causes huge waste of manpower and material resources.
How to cure this stubborn disease? Recently, the reporter followed the builders of Zhongyuan Company of China Construction Third Engineering Bureau to visit the Henan Zhongyan Xuchang Tobacco Flavoring Warehouse project located in Xuchang to learn about the situation.
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China Construction Third Engineering Bureau Zhongyuan Company has successfully developed a key technology for intelligent control of concrete vibration and maintenance based on IoT gateway, and applied it to ongoing projects.
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The atlas is divided into two parts: data security risks and engineering entity security risks.
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Strictly follow the “Concrete Mix Proportion Notice” and input the concrete mix proportion into the batching system of the mixer.
In order to prevent errors, this job usually requires two people to operate, one of whom is responsible for inputting the concrete mix proportion into the computer, and the other is responsible for verifying and confirming, and making records of the input of the concrete mix proportion.
Strictly verify the variety, specifications, and quantity of raw materials to ensure that the quality of various raw materials used in concrete meets the requirements of relevant standards and the provisions of the “Concrete Mix Proportion Notice”.
Special attention should be paid to the numbering of the raw material silos, the types of raw materials inside the silos, and the discharge gates (valves).
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The core of this exam focuses on the classification and applicability of mixing machines, the scale division of mixing systems, and the formula for calculating production capacity.
Computational exam points are prone to appear in case questions and require memorization of formulas and parameters.
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The construction of concrete dams using dry lean concrete is a new technology in concrete dam construction.
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