Mineral admixture for autoclave-free and steaming-free prestressed pipe piles and manufacturing method of mineral admixture

Abstract

The invention belongs to the field of building materials, and specifically relates to a mineral admixture for autoclave-free and steaming-free prestressed pipe piles and a manufacturing method of the mineral admixture. The technical scheme adopted by the invention is that the mineral admixture is made of superfine mineral slag powder, silicon powder, S95-grade mineral powder and a plasticity-keeping viscosity-reducing agent. After the admixture is added into the prescription of prestressed concrete pipe piles, low-carbon technological pipe piles can be produced without needing normal-pressure autoclave or high-pressure steaming. In the prestressed concrete pipe piles, the addition amount of the admixture is 100-200kg / m<3>. By adopting the admixture to produce the prestressed concrete pipe piles, the energy resource is saved, the dosage of cement and the production cost are reduced, the CO2 emission is reduced and good economic benefit is achieved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a mineral admixture for pressure-free steaming and steam-curing prestressed pipe piles and a preparation method thereof. Background technique [0002] At present, in the production of pipe pile manufacturers, most of the concrete ingredients are mixed with ordinary slag powder or fly ash to reduce production costs, but the reduced cost is only from the perspective of ingredients, which cannot be greatly reduced, and atmospheric pressure steam is used in production. It is realized by dual maintenance of curing and high temperature and high pressure steam curing. After the pipe piles are centrifuged, they are first cured by atmospheric pressure steam for about 6 hours. When the concrete strength can reach about 50Mpa, the mold is demoulded, and then they are cured by high temperature and high pressure steam for about 8 hours, and C80 concrete pipe piles can be obtained...

AI Technical Summary

Problems solved by technology

However, both normal pressure and high pressure have high energy consumption, large pollution, and are prone to safety accidents.

Although there is solar energy maintenance now, there are also problems such as long maintenance time and high cost

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