At present, there is a fatal chaos in the industry: drawings, changes, and lists clearly require the use of lightweight aggregate concrete, but foam concrete is secretly used as a substitute on site.
Construction workers, and even some technical management personnel, blindly replace materials based solely on the superficial perception that they are all lightweight, porous, and capable of weight reduction.
Little do they know that the raw materials, internal structure, strength grade, stress performance, and applicable standards of the two materials are completely different.
This behavior of material substitution is not simply a material deviation, but a typical example of engineering cutting corners and structural hidden danger construction.
In the later stage, quality accidents such as floor cracking, overall settlement, waterproof layer tearing, and roof load failure are prone to occur, and the acceptance stage is judged as unqualified 100%.
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