A kind of C60 pumping concrete and preparation method thereof

Abstract

The invention discloses a C60 pumping concrete and a preparation method thereof. The key point of the technical solution is a C60 pumping concrete, which comprises the following components in parts by weight: 400-420 parts of cement, 130-150 parts of admixture 690-710 parts of fine aggregate, 960-980 parts of coarse aggregate, 8-10 parts of admixture and 160-170 parts of water; the fine aggregate is mixed with river sand and machine-made sand in a weight ratio of 3:7 The fineness modulus of the river sand is 0.9-1.1, and the fineness modulus of the machine-made sand is 2.8-2.9; the coarse aggregate is mixed with pebbles and pebbles with a weight ratio of 6.5:3.5 The particle size of large pebbles is 10-20mm, and the mud content is <0.5%; the particle size of small pebbles is 5-10mm, and the mud content is <0.6%. The pumping concrete in the invention has the advantages of high compressive strength, good workability and high pumping height.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a C60 pumping concrete and a preparation method thereof. Background technique [0002] Ordinary concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures in an appropriate proportion, after uniform mixing, compact molding and curing hardening. Pumped concrete refers to the concrete whose slump of the concrete mixture is not less than 100mm and the concrete pump is used to transport the mixture through the pipeline. [0003] In the prior art, the Chinese patent whose authorized notification number is CN102701682B discloses a pumped concrete, a pumped concrete prefabricated pile and a production method thereof. The raw materials of the pumped concrete include: cementitious material, fine aggregate, coarse aggregate, water reducing agent and water, wherein the...

AI Technical Summary

Problems solved by technology

[0004] Due to the large amount of fine aggregate and coarse aggregate in concrete, generally, the raw materials such as coarse aggregate and fine aggregate of concrete raw materials in various regions are all obtained locally, and due to the large amount of river sand in the Sichuan-Chongqing area The fineness is relatively fine, while the surface of the machine-made sand is rough and the gradation is poor; the particle shape of the gravel is poor, mostly broken pebbles, and the needle-like flake stones are relatively high, which not only reduces the workability of concrete, but also poor The aggregate gradation also affects the compressive strength of concrete; and in order to improve the workability of concrete mixture, it is necessary to reduce the viscosity of concrete mixture and improve the fluidity of concrete mixture, but for gradation Poor aggregate, there will be a central rockfill, which reduces the encapsulation of the cementitious material on the aggregate

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