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Macro defect free cement with improved moisture resistance
Macro defect free cement with improved moisture resistance
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机译:无宏观缺陷的水泥,具有改善的耐湿性
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摘要
A cementitious composition may include polyvinyl alcohol, high alumina cement, water, a metallic coagent, a peroxide crosslinking initiator, and an organic acid retardant. A molded article may be manufactured from the cementitious composition by preparing a hydrogel pre-polymer blend of saponified polyvinyl alcohol acetate (PVAA) with greater than or equal to about 85% saponified PVAA, and water, mixing the hydrogel pre-polymer blend with high alumina cement (HAC) using a high shear mixing process, mixing in a metallic coagent and a peroxide crosslinking initiator, mixing in an organic acid retardant, and hot pressing the mixture at approximately 5 MPa pressure and approximately 90 degrees C for approximately 30 minutes.
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