本文通过等温量热试验,比较了纤维素醚对普通硅酸盐水泥、硫铝酸盐水泥、硅酸三钙和铝酸三钙72 h内水化热的影响.结果表明:纤维素醚能够明显降低普通硅酸盐水泥和硅酸三钙的水化放热速度,且对硅酸三钙水化放热速度的降低效果更显著;纤维素醚降低硫铝酸盐水泥水化放热速度的效果非常弱,对铝酸三钙水化放热速度有微弱的提高作用.纤维素醚会被一些水化产物吸附,从而延缓水化产物的结晶,进而影响了水泥和单矿的水化放热速度.
参考文献
| [1] | 蹇守卫;马保国;苏雷;李相国;穆松;袁龙.纤维素醚改性砂浆的研究进展[J].硅酸盐通报,2011(3):560-566. |
| [2] | 欧志华;马保国;蹇守卫.非离子纤维素醚在新拌水泥基材料中的作用及研究进展[J].硅酸盐通报,2012(1):96-98,110. |
| [3] | 王培铭.纤维素醚和乳胶粉在商品砂浆中的作用[J].硅酸盐通报,2005(05):136-139. |
| [4] | 张国防;王培铭.羟乙基甲基纤维素对水泥水化的影响[J].同济大学学报（自然科学版）,2009(3):369-373. |
| [5] | Ou Zhi Hua;Ma Bao Guo;Jian Shou Wei.Influence of cellulose ethers molecular parameters on hydration kinetics of Portland cement at early ages[J].Construction and Building Materials,2012:78-83. |
| [6] | J. Pourchez;A. Peschard;P. Grosseau.HPMC and HEMC influence on cement hydration[J].Cement and Concrete Research,20062(2):288-294. |
| [7] | J. Pourchez;P. Grosseau;R. Guyonnet.HEC influence on cement hydration measured by conductometry[J].Cement and Concrete Research,20069(9):1777-1780. |
| [8] | J. Pourchez;P. Grosseau;B. Ruot.Current understanding of cellulose ethers impact on the hydration of C_3A and C_3A-sulphate systems[J].Cement and Concrete Research,20098(8):664-669. |
| [9] | J. Pourchez;P. Grosseau;B. Ruot.Changes in C_3S hydration in the presence of cellulose ethers[J].Cement and Concrete Research,20102(2):179-188. |
| [10] | 马保国;欧志华;蹇守卫;徐如林.HEMC对水泥浆早期水化产物形成历程的影响[J].建筑材料学报,2011(6):798-802. |
| [11] | J. Wang;P. Somasundaran;D.R. Nagaraj.Adsorption mechanism of guar gum at solid-liquid interfaces[J].Minerals Engineering,20051(1):77-81. |
| [12] | J.S. Laskowski;Q. Liu;C.T. O'Connor.Current understanding of the mechanism of polysaccharide adsorption at the mineral/aqueous solution interface[J].International Journal of Mineral Processing,20071/4(1/4):59-68. |
| [13] | Liu Q.;Zhang Y..The adsorption of polysaccharides onto mineral surfaces: an acid/base interaction[J].International Journal of Mineral Processing,20013-4(3-4):229-245. |
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