Lightweight concrete as well as preparation method and application thereof

Abstract

The invention discloses lightweight concrete as well as a preparation method and an application thereof. The lightweight concrete is prepared from raw materials as follows: cement, building wastes, calcium oxide, fiber, a water reducing agent, a foam stabilizer, an air entraining agent, cellulose ether, a foaming agent, hydrogen peroxide, an expanding agent, a suspending agent, a thickening agent,calcium hydroxide, fly ash and water. Meanwhile, the invention also discloses a preparation method of the lightweight concrete. The invention also discloses a construction method of nonbearing wall casting in situ by using the lightweight concrete. The construction method comprises the steps as follows: 1) mounting constructional columns in a preset nonbearing wall position; 2) embedding water pipes and electric wires; 3) mounting nonbearing wall formworks; 4) casting the lightweight concrete into the formworks; 5) 24 h after casting, removing the formworks; 6) curing and arranging the wall.The lightweight concrete has the characteristics of lightweight, high strength and low cost and has good economical, social and environmental protection benefits.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a lightweight concrete and its preparation method and application. Background technique [0002] With the continuous acceleration of the urbanization process in our country, a large amount of construction waste is produced in the reconstruction of old urban areas and the construction of new urban areas. According to the research report of the Chinese Academy of Sciences, the construction waste generated in construction in my country reaches about 2 billion tons every year. At the same time, infrastructure such as demolition and construction of roads and bridges is rapidly increasing, and the discharge of construction waste remains high. It is estimated that in the next 10 years, my country will still generate an average of more than 2 billion tons of construction waste per year. The phenomenon of waste siege is becoming more and more serious. How to so...

AI Technical Summary

Problems solved by technology

However, the current traditional masonry filling system and technology seriously restrict the development of industrialization

The traditional way of building walls requires the use of building materials such as bricks, sand, and cement, and the cost of raw materials is high

During the construction process, it needs to occupy a large amount of work space, which is prone to generate dust, and there are phenomena such as dirty, chaotic and poor in the wall building site

The existing process structure column needs to be poured independently, and the labor cost is high

Requires slots in the wall to set the plumbing, which causes damage to the wall

After the wall is built, cement mortar is usually applied on both sides of the wall, but due to many reasons such as the shrinkage rate and water absorption of the brick and mortar are different, the traditional wall is prone to "hollowing" phenomenon, resulting in serious wall quality problems