Mortar-contg expanded perlite, white cement, air-entraining - agents, and opt cellulose derivs

摘要

Mortar, useful as high quality plaster, repair mortar and as an additive for aerated cement, contains expanded perlite, 67 (67-81) wt.% cement, consisting solely or mainly of white cement, and air-entraining agents (forming air-pores), e.g. Na lauryl sulphate. Mortar may contain materials raising its flexibility and plasticity e.g. lime, and pref. cellulose derivs., which also prevent or reduce danger of shrinkage crack.