High Water Content Material Based on Ba-Bearing Sulphoaluminate Cement

摘要

A new type of high water content material which is made up of two pastes is prepared, one is made from lime and gypsum, and another is based on Ba-bearing sulphoaluminate cement. It has excellent properties such as slow single paste solidifing ,fast double pastes solidifing ,fast coagulating and hardening, high early strength , good suspension property at high W/C ratio and low cost. Meanwhile, the properties and hydration mechanism of the material were analyzed by using XRD, DTA- TG and SEM. The hydrated products of new type of high water content material are Ba-bearing ettringite, BaSO_4, aluminum gel and C-S-H gel.