Gypsum Is An Important Raw Material For Industrial Reducing Carbon Emissions

With the proposal of my country's "carbon peak carbon neutralization" and "14th Five -Year Plan" energy -saving and emission reduction goals, it is the general trend to reduce the carbon emissions of the construction industry and accelerate the green transformation and upgrade of the building materials industry. 

Gypsum is an important raw material for industrial reducing carbon emissions. It has the functions of light quality, insulation and heat insulation, fire prevention, and can be used as a cement slowing agent, preparing gypsum self -flowing mortar, and plaster gypsum mortar. Lightweight plaster gypsum mortar is a type of plaster gypsum mortar. It is often used as a substrate material, and it is prepared by incorporating fillers, lightweight aggregate, and additives.

Compared with traditional cement plastering mortar, lightweight plaster gypsum mortar has the advantages of light weight, good hygroscopic, adhesive, and contraction. Golden Tian tested the effects of gypsum powder, light aggregate measuring, slowing agent doping, and cellulose ether. Increases are conducive to the improvement of the intensity of light -quality plaster littering, but the increase is small; the amount of vitro beads should not be too high, otherwise it is not conducive to its folding strength and compressive strength; sodium citrate to lightweight wiper to light wiper wiper wiper wiper wiper The gray desulfurization gypsum mortar has a slow condensation effect; the incident of hydroxylopyl methyl cellulose is not conducive to the compressive strength of lightweight plastering gypsum mortar. Wu Kaisheng and others used desulfurized gypsum, fine sand, light ingredients and external agents to prepare lightly plaster gypsum mortar. When the density of lightly plaster plaster was 990kg/m3, its pressure resistance was higher than 5MPa, and the bonding strength was higher than that of the adhesion. 0.3MPa. Ye Beihong and others use desulfurization gypsum, vitrified micro beads, expansion perlite, cellulose ether, air induction, and slow coagulants to make light plaster plastering mortar. Studies have shown that vitrified micro -pearls are better for light aggregate and The amount is 20%to 35%of the amount of gypsum; when the inflated perlite is used, the amount of plaster is 15%to 25%of the amount of plaster. The viscosity of cellulose ether should not be too large or too small, and the amount is 0.2%to 0.4%of the amount of gypsum. The doping of the air induction is 0.6%to 1.2%of the total amount of light plaster plaster powder.

Although many scholars have studied the preparation methods and performance of light plaster gypsum mortar, they have not studied the factors that affect the performance of mortar. This article is based on β-semi-water gypsum as the main gel material, and is mixed with vitro, calcium powder and additives to prepare lightly plaster gypsum mortar, focusing on the types and amounts of vitrified micro beads, types and types of tactical agents and types of tactile agents and types of tactile agents. Mixing, the effects of HPMC types and amounts on the pressure, apparent density, volume density, and water retention of light plaster gypsum mortar, in order to provide science and effectiveness for the improvement of the physical performance and improvement of construction performance of light plaster gypsum mortar Technical support.