低当量水灰比含超细颗粒水泥水化的研究

提出当量水灰比（Ｗ／Ｃ）Ｅ的概念，研究水化程度及其发展真挚与（Ｗ／Ｃ）Ｅ（）．１４６－０．２１，Ｗ／Ｃ＝０．２１）在７ｄ龄期内的关系，并观察了水泥石在１ｄ 微观结构。结果表明，随着（Ｗ／Ｃ）Ｅ下降，水化体系水化程度提高，水化程度随（Ｗ／Ｃ）Ｅ变化率的发展趋势可保持至７ｄ不变，在低（Ｗ／Ｃ）Ｅ状态下，具有初始界面面积水、产物层薄的优点，可使体系转入扩散控制阶段后仍能正常水化，低（Ｗ／Ｃ）Ｅ的水泥石１

Hydration Research on Cement Containing Specially Fine Particles with Lower Equivalent Water to Cement Ratio

Concept of equivalent water to cement ratio (W/C)E is put foreward. The relation of hydration degree as well as its development and lower (W/C).(0.146 to 0. 21) is investigated and,hardened cement paste in 1 day hydration is observed by SEM for structure identification. The results indicate that, hydration degree is increased as (W/C). decreased; this tendency of hydration degree variation with (W/C). can be maintained to, at least, 7 days.The advantages of larger Water cement contacting area and thiner hydrate layer during hydration make lower (W/C). system continuing normal hydration even when hydration turns into stage of deffusion control. SEM observation showes that structure densification of lower (W/C). hardened paste in 1 day hydration is superior to that of higher W/C system formed in age of 3 days or longer.