Cement additive

Abstract

The invention discloses a cement additive, and the cement additive comprises the following components in parts by weight: 10-50 parts of Portland cement, 5-15 parts of acrylic rubber powder, 4-10 parts of styrene emulsion, 8-16 parts of mineral oil, 10-22 parts of styrene-acrylic emulsion, 6-12 parts of waterborne butadiene, 3-8 parts of quartz sand, 2-10 parts of polymer latex powder and 4-8 parts of a mildew preventive. The acrylic rubber powder is added in the manufacturing process to obviously improve the bonding strength of a substrate. The cement additive reduces the water absorption ofmortar, improves the drawing strength and abrasion resistance, and reduces the drying shrinkage and inhibits the occurrence of cracks, and the bonding strength is obviously improved after repeated cold and heat actions. By adding of the styrene-acrylic emulsion, the polymerization rate is fast, the molecular weight of the product is high, the polymerization can be carried out at a lower temperature, and the cement additive is beneficial to the direct use of latex and the production of environmentally friendly products, enhances the adhesiveness, plasticity and bonding strength of the mortar, and improves the compressive strength of the mortar. The cement additive is practical and feasible, and is suitable for popularization and use.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cement additive. Background technique [0002] The construction industry is an industry that revolves around the design, construction, decoration and management of buildings. Urban architecture is an important part of the city, and architecture is not just an artificial work for people to stay, rest, and entertain. It is related to our economy, culture, and life in a large way. Building materials, the materials used in buildings are collectively referred to as building materials. New building materials include a wide range, including thermal insulation materials, heat insulation materials, high-strength materials, and materials that can breathe, all of which are new materials. Building materials is a collective term for materials used in civil engineering and construction. Cement Companion is composed of a specific organic polymer emulsion and a certain proportion...

AI Technical Summary

Problems solved by technology

[0003] Due to the large temperature difference between the climate and the long-term thermal expansion and contraction of building mortar cementitious materials, defects such as poor bonding, hollowing, cracking, falling off and unstable performance of cement mortar often occur. many problems

At the same time, the defects of the above-mentioned building mortar cementitious materials also bring great troubles to consumers.