Early strength concrete with super retarding effect, and preparation process thereof

Abstract

The invention relates to an early strength concrete with a super retarding effect, and a preparation process thereof, and relates to the technical field of concrete preparation. The early strength concrete is prepared from, by weight, 180-200 parts of ordinary Portland cement, 1180-1220 parts of coarse aggregate, 600-640 parts of fine aggregate, 240-260 parts of an active admixture, 6-10 parts ofa polycarboxylate superplasticizer, 8-12 parts of a super retarder, 4-8 parts of an early strength agent and 180-200 parts of water. Addition of the super retarder and the early strength agent prolongs the initial setting time of the concrete and improves the early strength of the concrete.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to an early-strength concrete with a super retarding effect and a preparation process thereof. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. [0003] Existing concrete is usually poured and formed by mixing and stirring aggregates, cementitious materials and various additives. In some large-scale bridge projects, in order to improve the bearing capacity of single piles, the length and cross-section of the piles are large, the amount of concrete poured into the single piles is large, and the pouring time is long, especially in hot summer. The initial setting time of concrete is greatly extended to ensure a successful pouring. The init...

AI Technical Summary

Problems solved by technology

The initial setting time of ordinary concrete is about 6-8 hours, so ordinary concrete cannot adapt to this construction condition.

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