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| 摘要: |
| 通过对凝结时间、电阻率、化学收缩、抗压强度测试,探讨了三乙醇胺(TEA)对硅酸盐水泥初始结构形成和力学性能的影响.结果表明:TEA存在双临界掺量(0.02%,0.15%);TEA对水泥具有增溶作用,可促进C3A的水化,对C3S水化的影响和其掺量有关;适量的TEA可以提高水泥抗压强度,并且可以控制水泥的凝结时间,以满足工程上缓凝与促凝的要求. |
| 关键词: 三乙醇胺,硅酸盐水泥,初始结构,力学性能 |
| DOI： |
| 分类号:TU528.042.1 |
| 基金项目:国家重点基础研究发展规划(973)资助项目(2001CB6107043) |
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| Influence of Triethanolmine on the Initial Structure Formation and Mechanical Properties of Cement |
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MA Bao-guo XU Yong-he DONG Rong-zhen
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| Abstract: |
| The effect of triethanolamine(TEA) on the initial structure formation and mechanical properties of cement was investigated by the testing of setting time,resistivity,chemical shrinkage,flexural and compressive strengths.The measurements show that two critical adding amounts of TEA are existed(0.02% and 0.15%).TEA can advance the solution of cement and accelerate the hydration of C_3A,but the effect of the hydration of C_3S is related to the amount of TEA.The mechanical strength is advanced by proper amount of TEA.The setting time can be controlled and TEA can be used as retarder or accelerator to satisfy the requirement of different condition. |
| Key words: triethanolmine,Portland cement,initial structure,mechanical property |
