Self-leveling self-compacting concrete and preparation technology thereof

Abstract

The invention discloses self-leveling self-compacting concrete and a preparation technology thereof. The self-leveling self-compacting concrete is prepared from the following raw materials in parts bymass: 400-550 parts of cement, 172-193 parts of powder, 1,000-1,100 parts of sand, 20-30 parts of lime powder, 15-20 parts of additive, 3.4-5.7 parts of efficient water reducer, 95-105 parts of water, 200-260 parts of a binder and 60-65 parts of steel fibers. The self-leveling self-compacting concrete has the beneficial effects of good flowing property, low hydration heat, wide work degree adjustment range and is suitable for the requirements of production technologies of different construction components, construction is convenient and fast, not only can the ultrahigh strength, the high tenacity, the high durability and the volume stability be guaranteed, but also the cohesiveness can be reduced, the self compatibility and the self-leveling property can be improved, no bleeding or discreteness phenomenon exists, the self-leveling self-compacting concrete is environmentally friendly, the compatibility and the quality stability of the concrete are greatly improved, the concrete qualityis stable, and the self-leveling self-compacting concrete is high in durability and low in cost.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a self-leveling and self-compacting concrete and a preparation process thereof. Background technique [0002] Concrete, referred to as "concrete (tóng)": refers to the general designation of 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 is widely used in civil engineering. The existing self-leveling and self-compacting concrete for construction is mostly made of simple cement, gravel, and fine sand mixed with water. The surface of the concrete manufactured in this way is prone to cracks and has low tensile strength. , poor corrosion resistance, poor toughness, not easy to fl...

AI Technical Summary

Problems solved by technology

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 is widely used in civil engineering. The existing self-leveling and self-compacting concrete for construction is mostly made of simple cement, gravel, and fine sand mixed with water. The surface of the concrete manufactured in this way is prone to cracks and has low tensile strength. , poor corrosion resistance, poor toughness, not easy to flow, poor process molding, not easy to form self-compacting, etc., which limit the wide use and development of self-leveling and self-compacting concrete in the construction industry

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