Study On New High Performance Single Component Construction Of Outer Wall Putty For Confection And Performance

Outer wall putty, which is looking upon as an indispensable supporting material of outer wall coating, a long period of time, only be used as supplementary material of grass-roots leveling and filling, putty often focus only on its development of workability and leveling, and neglect its flexibility, water-holding capacity, water-resistance, anti-cracking and so on which has material effect on the coating durability and long-term significant. So, research and development outer wall putty which has high flexibility, excellent anti-cracking, stronger water resistance, easily construction and high cost performance is imperativing.The article with cement as the main bonding materials, select quartz sand, calcium carbonate and pulvis talci as stuffing confect outer wall putty, by the instruction of auxiliary agent, such as redispersible emulsion powder, HPMC, cellulose fiber and so on, research its combination property, finally developed a kind of high performance environment-friendly putty which has high construction, excellent anti-cracking, high bond strength.First, study the mixture ratio of bonding materials and auxiliary agent, analysis the influence of raw materials filler putty performance, by the result analysis of orthogonal experimental design, determine the optimal mix.Secondly, by the instruction of redispersible emulsion powder, HPMC, cellulose fiber, analysis approach its combination property, such as bonding strength, anti-cracki- ng and water quantity, water-holding capacity, water resistance, alkali resistance, defini- ted the final formulation of high performance outer wall putty. Combinbination property test analysis showed that the putty of the article developed have high construction, high bond strength, especially the bond strength which under freeze-thaw cycles, excellent anti-cracking.Finally, by dint of SEM and EDXA and other modern detection equipment, observe the microstructure and element change of putty, analysis auxiliary agent, such as redisp- ersible emulsion powder, HPMC, cellulose fiber filler anti-cracking, bond strength and other mechanisms of putty, discuss the structure performance which has led to macroec- conomic performance improvement of putty.