辽河特细砂混凝土配制初探

Preliminary Discussion of Liaohe River Super-fine Sand Concrete Compound

针对辽河中下游特细砂产量大、亟待开发利用的现状,展开辽河特细砂混凝土配合比设计相关研究;首先通过加密筛分试验确定该地区特细砂的细度模数及级配情况,进而进行特细砂混凝土的试验研究,应用"三低一超"原则进行配合比设计,确定不同水灰比和砂率特细砂混凝土间和易性与强度的差异,利用灰水比与强度之间的线性关系推导回归方程,并将试验结果汇总同普通中砂混凝土相应性能进行比较,从而了解特细砂混凝土的相关性能情况。给当地特细砂混凝土施工给予一定的参考价值。

Aiming at super-fine sancl large production and need to be developed and utilized status in middle and lower reaches of Liaohe Riv- er, relevant research about super-fine sand concrete mix design was carried out. First through eneryption screening experiments to determine the region＇s fine sand fineness modulus and gradation condition, and then carry out super-fine sand concrete pilot study, using three low one extra principle to determine the workability and strength differences of different water-cement ratio and sand ratio between super fine sand con- crete. The regression equation was obtained by the use of linear relationship between gray water ratio and intensity, and the test results were summarized and compared with ordinary concrete performance, so as to understand the relevant performance of super fine sand concrete situa- tion. The study can provide a certain reference for local super-fine sand concrete construction.