High-strength mass concrete and preparation method thereof

Abstract

The invention discloses high-strength mass concrete. Each cubic meter of concrete comprises 300-400kg of cement, 50-60kg of iron powder, 30-50kg of fly ash, 800-850kg of sand, 1000-1100kg of broken stone, 160-175kg of water, 2-4kg of a polycarboxylate superplasticizer, 4-8kg of chitosan oligosaccharide and 2-5kg of sodium alginate. The invention discloses a preparation method of the high-strengthmass concrete. The preparation method comprises the following steps of: firstly, putting a polycarboxylate superplasticizer, sodium alginate and chitosan oligosaccharide into water to obtain a mixtureI; adding cement, fly ash, sand and gravel into water to obtain a mixture II; adding the mixture I into the mixture II to form a mixture III, and adding iron powder to obtain a concrete mixture; andpouring the concrete mixture to form a concrete structure. The prepared concrete structure is high in strength, large in size, long in setting time and compact and uniform in product.

Description

technical field [0001] The invention belongs to the technical field of concrete, and relates to a high-strength large-volume concrete and a preparation method thereof. Background technique [0002] Concrete is made of cement as the main cementitious material, which is mixed with water, sand and gravel, and if necessary, chemical admixtures, mineral admixtures or other functional components are mixed in an appropriate proportion, and are uniformly stirred, densely formed and maintained. Hardened artificial stone. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. In the construction of subways, high-rise buildings or other buildings, high-strength concrete is used when encountering heavy-duty support structures. However, after the current concrete is mixed, if it cannot be stirred evenly in winter, it will be...

AI Technical Summary

Problems solved by technology

In the construction of subways, high-rise buildings or other buildings, high-strength concrete is used when encountering heavy-duty support structures. However, after the current concrete is mixed, if it cannot be stirred evenly in winter, it will be poured Local condensation often occurs during the process, resulting in uneven stress on the poured structure, which can easily cause landslides, thereby reducing its stability

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