High-strength non-shrinkage ceramic tile seam filling agent what needs to be done to improve?

Unusually low high-strength non-shrinkage ceramic tile gap filling agent, high-strength non-shrinkage ceramic tile seam filling grout casting in fujian is close-grained, cause water film around the inside of the aggregate, unique product is a lot of high-strength non-shrinkage ceramic tile gap filling grout, there sits the exudation of phenomenon, in the aggregate under water sac. Subsequently, ettringite generated by cement hydration and calcium hydroxide crystal, because aggregate surface water/cement ratio is large, so close to the crystallization of the aggregate of these products into a thick crystal, causing more than the cement paste or mortar pore structure. Not guaranteeing quality of high-strength non-shrinkage ceramic tile gap filling agent, in the early, is to produce unique sits inside exudation, interfacial transition zone in the pore volume and the size is bigger than the cement paste or mortar ontology. Crystalline compounds such as calcium hydroxide and ettringite, its size and the number in the interface transition zone is controlled, cause ceramic tile seam filling agent in the transition zone below the slurry ontology. High strength without shrinkage due to aggregate and cement ceramic tile seam filling agent of elastic modulus and thermal expansion coefficient difference, when ceramic tile seam filling agent force or temperature and humidity change, due to the deformation difference of cement and aggregate, so that the aggregate and cement interface cracks, damage to make ceramic tile seam filling agent usually first a in the interface. This kind of situation, before loading, the micro cracks in transition zone is still exist. To spread to the durability of ceramic tile seam filling grout. Transition region become a weak hub in the fit. High-strength non-shrinkage ceramic tile gap filling agent, cement and aggregate interface transition zone got very big improvement, it is by low water/cement ratio, mixed with admixture and mineral admixtures. Due to low water/cement ratio is increased so that the strength and elastic modulus of cement stone, cement and aggregate gap between elastic modulus decreases. Therefore makes the interface water film thickness decreases, and crystal growth of free space. Incorporation of active mineral fine admixture, after reaction with calcium hydroxide added c - s - H gel, cut the calcium hydroxide crystal content, in the fall too tough after interface layer porosity. Porosity is very low, and basically there is no more than 10 nm macroporous, calcium hydroxide in the natural gas hydrates.

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