Production method of ready-mix pumped heavy concrete

Abstract

The invention discloses a production method of ready-mix pumped heavy concrete. The method comprises the following steps: preparing raw materials for heavy concrete: a binding material, coarse and fine aggregate, an additive and water; adding the binding material, coarse and fine aggregate and water into a mixer in a condition of continuous mixing of the mixer of a mixing plant, perform primary mixing for 3 to 60s, then adding the additive, performing secondary mixing, and ensuring that the time of secondary mixing is not smaller than 30s, so as to obtain the ready-mix pumped heavy concrete. According to the method, the ready-mix pumped heavy concrete is produced in a mixing plant through a mixing plant water reducer delay infiltration method, a polycarboxylic type high performance water reducer and barite aggregate, and through the adoption of the method, the dosage of the water reducer can be reduced by 8 to 25 percent, and the obvious economic benefit is produced.

Description

(1) Technical field [0001] The invention relates to a production method for ready-mixed pumping heavy concrete, in particular to the hysteresis incorporation method of a mixing building water reducer (or a pumping agent mainly based on a water reducer), and the selection of a polycarboxylic acid-based high-performance water reducer And a method for producing ready-mixed pumped heavy concrete in a mixing building using barite coarse and fine aggregates, involving the strength grade of heavy concrete from C30 to C60. (2) Background technology [0002] Heavy concrete (or anti-radiation concrete) is a kind of concrete prepared with heavy aggregate and cement, which has the function of protecting gamma rays and neutron radiation, and is economical and effective. At present, most of the new medical units will have a radiology department, so the walls and floors of the buildings need to be poured with heavy concrete, and more and more civil projects in the nuclear industry will be ...

AI Technical Summary

Problems solved by technology

However, since the post-mixing method must be carried out on the construction site, and technical personnel must be present to guide it, this increases the labor cost and difficulty of using this method. Therefore, general concrete mixing plants do not accept this method, but some concentrated large quantities Concrete projects are still willing to use this kind of site water reducing agent or pumping agent post-mixing method

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