Light-weight and energy-saving plastering mortar and construction method thereof

Abstract

The invention relates to light-weight and energy-saving plastering mortar, which is prepared by mixing the following components in part by weight: 30 to 40 parts of ordinary Portland cement, 2 to 4 parts of hydrated lime, 10 to 20 parts of light aggregate, 40 to 50 parts of heavy aggregate and 1.0 part of compound aid, wherein the light aggregate is an inorganic vitrified hollow microporous material of which the fineness is below 100 meshes; and the heavy aggregate is aeolian sand. During construction, the light-weight and energy-saving plastering mortar is diluted by water added in an amountwhich is 30 to 50 percent based on the weight of the light-weight and energy-saving plastering mortar, and is stirred and mixed mechanically or manually and uniformly until the plastering mortar has the suitable viscosity, and then mechanical spraying or manual construction Is performed. According to the concept of light weight and eco-environmental protection, the light-weight and energy-saving plastering mortar is made light by adopting the inorganic vitrified hollow microporous material, and is matched with the primary elastic modulus of a light-weight wall body to reduce coefficients of heat conductivity and reduce the thermal bridge effect, so the light-weight and energy-saving plastering mortar prevents hollowing, cracking and shedding, insulates heat and reduces noise, and is favorable for mechanized construction. The aeolian sand is used as aggregates, so the plastering mortar has excellent grading distribution and has the prominent three-dimensional texture; and the special compound aid is adopted to improve the peaceability of the mortar to achieve the excellent construction effect.

Description

technical field [0001] The invention relates to a construction mortar, in particular to a formula of a lightweight energy-saving plastering mortar and a construction method thereof. Background technique [0002] In current construction projects, lightweight walls such as aerated concrete blocks are often used, and the specific gravity of aerated concrete blocks is about 600-800Kg / m 3 , the thermal conductivity is 0.14-0.20W / (m K 25°C); the existing common plastering mortar is still used, and the composition and weight ratio of this common plastering mortar are generally: Ordinary Portland cement 20- 30, slaked lime 0-5, limestone sand 60-75, the specific gravity of this mortar is 1700-1800Kg / m 3 , is not lightweight mortar, and does not match with lightweight walls; and the elastic modulus of this ordinary plastering mortar is significantly greater than that of aerated concrete blocks, and the elastic modulus does not match, resulting in large deformation stress at the plas...

AI Technical Summary

Problems solved by technology

During the drying process, care must be taken not to introduce harmful substances, so you have to choose to use clean fuel for drying, and the treatment cost is relatively high

On the other hand, artificial crushing of sand needs to consume energy, and will produce a large number of by-products, polluting the environment

[0004] In the process of mechanized construction, due to the large proportion of existing ordinary plastering mortar, many consumables, heavy vertical transportation burden, and no energy saving, it is easy to cause the mortar machine to block the pump, pipe, and gun, which hinders the smooth progress of mechanized construction. Low construction efficiency

It often requires a large amount of base surface watering and interface treatment, and is highly dependent on the construction personnel's technology. Due to the weight and insufficient bonding strength, it will cause falling deformation. It needs to be constructed in multiple layers, and the construction efficiency is low.