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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.
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 CSH gel.