Quality problems of lightweight concrete in construction should be paid attention to
Quality problems of lightweight concrete in construction should be paid attention to
1. lightweight concrete is not dense: mainly due to the mix ratio is not allowed and improper operation.The base is not too dry sprinklers and cushion is too thin, will also cause uncompactness.
2. Uneven surface and inaccurate elevation: not carefully leveling during operation.When pouring, the thickness of light weight concrete must be controlled according to the horizontal line pulled. After the high line is filled and leveled, the horizontal pile shall be leveled with the wooden scraping bar.
3.irregular crack: the cushion area is too large, not subsection bin for pouring, the first layer warm ditch cover plate is not poured light concrete, the first layer of ground backfilling soil is not uniform sinking or pipeline too much cushion thickness, and other factors, can lead to cracks.
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