A kind of lightweight aggregate concrete and preparation method thereof

Abstract

The present application relates to the field of building materials, and specifically discloses a lightweight aggregate concrete and a preparation method thereof. A lightweight aggregate concrete, prepared from raw materials including the following parts by weight: cement, admixture, machine-made sand, stone powder, surface-modified ceramsite, fine stone, polytetrafluoroethylene fiber, water, water-reducing agent; surface The modified ceramsite is obtained by surface modification of ceramsite with fireproof resin and potassium perfluorobutanesulfonate; the preparation method is as follows: mixing and stirring cement, admixture, machine-made sand, stone powder and fine stone to obtain a solid mixture; The remaining raw materials other than the surface-modified ceramsite and the polytetrafluoroethylene fibers are added to the solid mixture, and the concrete slurry is obtained by stirring; the surface-modified ceramsite and the polytetrafluoroethylene fibers are added to the concrete slurry, and the concrete is obtained after stirring. The lightweight aggregate concrete of the present application improves the high temperature resistance of the concrete; the preparation method of the present application reduces the possibility of abrasion of the organic film on the surface of the surface-modified ceramsite.

Description

technical field [0001] The present application relates to the field of building materials, and more particularly, to a lightweight aggregate concrete and a preparation method thereof. Background technique [0002] River sand is a kind of non-metallic ore with high impurity content and is often used in the preparation of concrete. . However, there is currently a lack of mineral resources, so the purchase of river sand is restricted. [0003] In order to maintain the normal production of concrete, the stone powder obtained by crushing the quarry waste rock is used to replace part of the river sand as the raw material for preparing concrete. In this way, the use of stone powder can not only maintain the normal production of concrete, but also meet the purpose of saving resources and reducing environmental pollution. . [0004] At present, the problem of fire in building structures is becoming more and more prominent. As the building material with the largest amount in constr...

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Problems solved by technology

[0004] At present, the fire problem of building structures is becoming more and more prominent. Concrete is the most used building material in construction, and its high temperature resistance plays an important role in the fire prevention of buildings. However, the high temperature resistance of concrete made of stone powder needs to be improved.

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