Construction Precast Development
Precast News From China
The ground has cracked again! “- This is probably one of the most headache inducing issues for countless homeowners, construction workers, and flooring professionals.
Those irregular turtle cracks not only affect aesthetics, but also pose hidden safety hazards.
At this moment, a classic “throwing the pot” battle will unfold: the material supplier says it’s because the construction was not done well, and the construction party says it’s because the material quality is not good.
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During construction, the retention of concrete test blocks is divided into standard curing test blocks and test blocks under the same conditions.
The reason why the testing of concrete test blocks requires both standard curing and the same conditions is that the two represent different meanings and play different roles, and cannot be simply or mutually denied.
Both must be qualified.
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The phenomenon of concrete hard shell refers to the rapid solidification of the surface to form a “hard shell” after pouring, while the interior is still in a plastic state.
Subsequently, problems such as sanding, cracking, and insufficient strength are prone to occur.
The core cause can be summarized as surface moisture imbalance+uneven hydration reaction.
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During the construction process, the deviation of the reinforcement protection layer of reinforced concrete structural components directly affects the mechanical properties and durability of the reinforced concrete components, which is related to the safety and service life of the building.
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Printing shell: Use a desktop concrete 3D printer to print hollow permanent templates in sections.
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In today’s rapidly developing urbanization, construction waste piles up like mountains, and natural sand and gravel resources are gradually depleting.
The use of recycled coarse aggregates prepared from construction waste to produce recycled concrete has become a key strategy for achieving sustainable development in the construction industry.
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Ultra high performance concrete (UHPC) has become an ideal material for high-performance structures such as bridges and landmark buildings due to its excellent strength and durability.
However, behind this’ excellence ‘lies a high environmental cost – the extremely high amount of cement used and the huge carbon footprint caused by raw material extraction.
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In the context of rapid development of precast buildings, the traditional 70mm diameter core sample detection method faces limitations in applicability in thin-walled components.
This article aims to explore the feasibility of using 50mm diameter ultra small core samples to test the compressive strength of concrete through experimental research, analyze the influence of core sample diameter on the test results, and provide experimental basis for revising the testing standards.
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In the spirit of being responsible for engineering quality, our company has put forward higher requirements for concrete production in this stage and developed a comprehensive winter construction technology plan: during the winter concrete construction process, our company uses antifreeze and water reducing agents, reduces water cement ratio and other methods to prepare concrete, and increases efforts in raw materials, production process, quality control and other processes to ensure that the quality risks of concrete production, transportation, pouring and other links are minimized.
While our company takes technical measures for winter construction of concrete, the pouring, curing, and maintenance of concrete will also have a direct impact on the quality of concrete structures.
In order to prevent quality accidents to the greatest extent possible, the relevant matters are introduced below in order to achieve good results and help you create excellent projects.
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