What about mortar cracks? After reading this article you will know!

original title: What about mortar cracks? After reading this article you will know!polymer cat () reprint: plastic crack principle interpretation, plastic cracking refers to the mortar before hardening or hardening process to produce cracking, it generally occurs in the early stage of mortar hardening, plastic cracking cracks are generally coarse, the length of cracks is short.reason analysismainly related to the material nature of the mortar itself and the ambient temperature, humidity and wind speed, etc. : high cement usage, sand fineness module, the higher the mud content, water consumption, the more prone the mortar plastic cracking;prevention and control measuresmortar by adding water thickeners and admixtures, reduce cement use, control the sand fine ness module and its mud content, reduce water consumption, control the construction of the environment, try to avoid high temperature drying and windy climate conditions, thereby reducing the risk of plastic cracking.the principle of dry shrinkcracking explaineddry shrink cracking refers to the mortar after hardening to produce cracking, it generally occurs in the late stage of mortar hardening, dry cracking crack is characterized by thin and long. Cause Analysis The main reasons for dry shrinking cracking are the large amount of cement in mortar, which causes volume shrinkage due to high strength.the late maintenance of mortar construction is not in place, the drying shrink age of the doped or admixture material itself is large, the wall itself is cracked, the interface is not properly handled, the mortar grade is misused or misused, the substrate and mortar elastic modulus are too different from the prevention measures to reduce the amount of cement.mixed with appropriate doping, reduce the shrinkage value, construction enterprises to strengthen the relevant personnel business knowledge of publicity and guidance, strengthen management, from all aspects of strict requirements, and in accordance with the premixed mortar construction methods for construction.
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