Study on Anti-Cracking of Mortar and Concrete Pavement in Dry Areas of North China

It always is a technical problem about the drying shrinkage cracking of mortar plastering layer and concrete surface layer of building wall in construction field. The influencing factors of cracking have regional climate characteristics, building structures, raw materials, construction standards etc. Analyzed the cracking principle of mortar and concrete pavement in dry areas of North China, and developed the complex additives having five kinds of performances: efficient water conservation, compensated shrinkage, fiber reinforcement, self-repair cracks in the matrix and polymers toughening, which is used to mortar and concrete to alleviate drying shrinkage cracking. The series of processes and product performances of the complex additives has been introduced in this paper.