At present, all dry powder mortar products need to add HPMC without exception. Its biggest contribution is to increase the water retention capacity of mortar, improve fluidity and workability, improve the initial strength of cement mortar and avoid cracking, especially in The performance of super absorbent base and high temperature construction is particularly outstanding. HPMC has certain influence on the bending strength, compression resistance and tensile bond strength of cement mortar; through the mercury intrusion test pore structure analysis experiment, the results show that the tensile bond strength of cement mortar mixed with HPMC has been improved; After methylcellulose ether, the flexural and compressive strength of cement mortar are reduced. The larger the dosage, the lower the strength. The optimal dosage should be controlled at 0.1% -0.3%.
During the use of HPMC, it is necessary to wear protective masks to avoid direct contact with skin and eyes. When storing, pay attention to rain and sun protection, and store in a cool place. At the same time, avoid splashing in the air, causing environmental pollution, preventing powder accumulation, so as not to cause explosion hazards.