Bottom roof plate concrete

Abstract

The invention discloses a concrete for the bottom slab of a roof slab. The concrete is uniformly mixed with the following raw materials: water 192-215kg / m³, cement 315-345kg / m³, fly ash 98-140kg / m³, sand 762‑792 kg / m³, mineral powder 6.8‑9.2 kg / m³, pebble 1080‑1153 kg / m³, silicon powder 10.6‑18.9 kg / m³, admixture 4.9‑6.5 kg / m³, debris 310‑330 kg / m³ , Wood calcium 1.8‑3.1 kg / m³. The invention has the advantages of reasonable design and wide application range.

Description

technical field [0001] The invention relates to the technical field of concrete for designing buildings, and in particular relates to concrete for the bottom slab of a roof slab. Background technique [0002] Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. concrete. Concrete is the most widely used and used building material in civil engineering. Design and manufacture concrete according to the predetermined performance, and develop new varieties of lightweight, high-strength, and multi-functional concrete. [0003] The existing concrete mix design is unreasonable, cannot be applied to the needs of existing production and life, and the cos...

AI Technical Summary

Problems solved by technology

[0003] The existing concrete mix design is unreasonable and cannot be applied to the needs of existing production and living, and the cost is high