Recyclable red brick sand premixed dry mortar and manufacturing method thereof

Abstract

The invention relates to mortar, and particular relates to recyclable red brick sand premixed dry mortar which is applicable to building and plastering at normal temperature and low temperature, is manufactured by crushing red brick recycled in a building removing process and can replace natural sand. The recyclable red brick sand premixed dry mortar is prepared by mixing cement, river sand or sea sand and adding less additive, wherein the recyclable red brick sand partially or entirely replaces the river sand or sea sand, the replacement rate of the recyclable red brick sand is 30-100%, and a certain amount of modifier is added. Specifically, the recyclable red brick sand premixed dry mortar comprises the materials in which the mass ratio of cement to river sand(or sea sand) to recyclable red brick sand to a modifier is 1: (1-6.0): (0-3.0): (0.05-0.2). The production process comprises the steps of: (1) detecting and drying raw materials; (2) preparing the modifier; (3) evenly mixing the cement, natural sand and / or recyclable red brick sand and modifier according to proportion to obtain the finished recyclable red brick sand premixed dry mortar; (4) testing consistency, layering degree and stability; and (5) metering and putting in storage.

Description

technical field [0001] The invention belongs to building material concrete, and relates to a high-viscosity and low-shrinkage dry-powder mortar produced by utilizing recycled red brick sand from construction waste and a manufacturing method thereof. technical background [0002] With the development of modern housing construction and people's increasing attention to the living environment, construction mortar, which is widely used in construction projects, is also being innovated to adapt to new developments. Because the traditional mortar is mixed on site, its quality has not been well and effectively controlled due to human factors. Although its use in construction engineering is quite mature and extensive, due to its own defects, it cannot meet the fine requirements of modern people for living environment and living conditions, so it will inevitably lead to the withdrawal of traditional mortar from the historical stage of construction engineering. In order to meet the ne...

AI Technical Summary

Problems solved by technology

Recycled aggregates have been successfully used in the construction industry in developed countries in Europe and America, but they are mainly used on the basis of non-structural concrete and roads; their application in structural concrete is limited to less than 20%, and the content of red bricks is strictly required to be within Within 5%, this is mainly because compared with natural stone, recycled aggregate has lower strength, porosity and higher water absorption rate, which makes it difficult to control the fluidity in structural concrete and limits its application

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