The expanded perlite has high water absorption rate and poor water resistance, which leads to large volume shrinkage deformation of the thermal insulation mortar during mixing, low thermal insulation performance, easy cracking, low adhesion strength to the base layer, and easy to empty drums. The expanded perlite thermal insulation mortar is prone to delamination, segregation and bleeding, and the construction performance is poor, and the technical performance of the thermal insulation mortar after hardening is affected.
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