A two-component anti-sagging cement-based material curing agent and its application

Abstract

The invention relates to a two-component anti-sagging type cement-based material curing agent and an application thereof. The two-component anti-sagging type cement-based material curing agent comprises A component and B component of 2:1 in weight ratio, wherein by weight part, 100 parts of the A component comprise 40-50 parts of modified styrene-acrylic emulsion, 5-10 parts of oxidized polyethylene wax emulsion, 3-5 parts of 2,2,4-trimethyl-1,3-pentanediol isobutyrate, 1-1.5 parts of polyether-modified silicone oil, 3-5 parts of fluorocarbon surfactant, 15-20 parts of water-soluble epoxy resin emulsion, 1-3 parts of fumed silica and the balance of water, and by weight part, 100 parts of the B component comprises 40-50 parts of waterborne epoxy curing agents and the balance of water. Compared with the prior art, the two-component anti-sagging type cement-based material curing agent is good in film-forming property and high in water-retention rate, has good adhesion to cement-based material, difficulty falls off, and has certain toughness and an anti-sagging function.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a two-component anti-sagging cement-based material curing agent and an application method thereof. Background technique [0002] After the cement-based material is poured, it needs to be kept at a certain temperature and humidity for a certain period of time to fully hydrate the cement. This process is called curing. A certain amount of water is a necessary condition for cement hydration. The cement paste can be fully hydrated and hardened in a humid environment, so as to ensure the normal growth of the cement strength. Abnormal development, in severe cases, will lead to shrinkage cracks in cement-based materials. [0003] At present, cement-based materials mostly adopt traditional curing methods, including spray curing, water immersion curing, covering plastic film curing and covering wet material curing. These methods not only have low curing efficiency,...

AI Technical Summary

Problems solved by technology

[0003] At present, cement-based materials mostly adopt traditional curing methods, including spraying curing, soaking curing, covering plastic film curing and covering soaked objects. These methods not only have low curing efficiency, but also require a lot of manpower and material resources. With the development of technology, People have invented a new type of curing material, that is, curing agent, which can form a layer of impermeable film on the surface of cement-based materials, block the moisture in the cement-based materials from evaporating to the outside, and use its own moisture to maximize the water retention of cement paste. chemical effect to achieve the effect of maintenance

[0004] At present, curing agents mainly have the following deficiencies during use: (1) poor adhesion to cement concrete or cement mortar surfaces, and easy to fall off after film formation, resulting in inadequate maintenance; (2) poor toughness of the resulting film, when cement concrete or cement mortar When the volume of cement mortar changes with temperature, it is prone to cracking, and the water is lost from the film cracks, resulting in poor curing effect

(3) When it is used on the facade or top surface of cement-based material structure, it is prone to sagging, which not only has poor curing effect, but also causes waste of curing agent

Images