Super retarded concrete

Abstract

The invention discloses super retarded concrete, and relates to the technical field of concrete, and the super retarded concrete comprises the following raw materials in parts by weight: 280-380 partsof cement, 80-100 parts of mineral powder, 100-125 parts of fly ash, 1100-1600 parts of natural macadam, 600-700 parts of yellow sand, 3-8 parts of an ultra-retarding agent and 180-200 parts of water. The preparation method has the advantages that the initial setting time of the concrete is prolonged, and the strength of the concrete is improved.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a super retarded concrete. 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. The initial setting time of concrete needs to be adjusted according to the actual construction conditions. For example, when the construction of occlusal piles is too long, the initial setting time of concrete is generally required to be about 60 hours, while the initial setting time of general concrete is 6- About 8 hours, so ordinary concrete cannot adapt to the construction conditions. Contents of the invention [0004] In view of ...

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Problems solved by technology

The initial setting time of concrete needs to be adjusted according to the actual construction conditions. For example, when the construction of occlusal piles is too long, the initial setting time of concrete is generally required to be about 60 hours, while the initial setting time of general concrete is 6- About 8 hours, so ordinary concrete cannot adapt to this construction condition

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