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What is the quota of pouring concrete for slope protection and protective layer of expressway?
The quota of highway concrete slope protection sleeve is concrete: cement/sand ratio 1: 5.5, sand particle size 5 ~ 20mm, compressive strength C20~C30, and protective layer thickness ≥50mm. According to relevant data, the main function of the slope protection sleeve is to prevent the edge of concrete slope protection from being damaged by weathering, water erosion and pollution.
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