掺杂矿渣对水泥收缩补偿效应的影响毕业设计论文.doc

┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 装 ┊ ┊ ┊ ┊ ┊ 订 ┊ ┊ ┊ ┊ ┊ 线 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 安徽工业大学 毕业设计(论文)报告纸 共 2 页 第 PAGE 2 页 掺杂矿渣对水泥收缩补偿效应的影响 摘　　要 研究矿渣水泥的收缩补偿实验，通过调整不同原料(矿渣粉、硅酸盐水泥熟料、石膏以及明矾)的配合比，达到最好的效果，即在满足强度的前提条件下测定矿渣水泥试块的膨胀率。由于实验条件限制，主要测量其28 d的相对膨胀率(28 d相对膨胀率=28 d试块长度/脱模试块长度)，通过不同的实验配合比，可以得到以下的结论：矿渣掺量的不同影响着水泥的收缩补偿效应；水泥熟料掺加量影响着水泥的收缩补偿效应；钙矾石的生成量影响着水泥收缩补偿效应。本文实验部分分为两个阶段，其采用的原料具有很大的不同，在第一阶段实验中(原料：矿渣粉、硅酸盐水泥熟料粉以及石膏)可以得到矿渣：硅酸盐水泥熟料：石膏=55:38:7是为最佳实验配合比，此时可以看到明显的收缩补偿效应。第二阶段实验在第一阶段实验的基础上引用了明矾添加硫酸根离子作为硫酸盐激发剂，可以得到矿渣粉：硅酸盐水泥熟料粉：石膏：明矾=53:36:9:2是为最佳配合比，可以明显的看到第二阶段实验比第一阶段实验具有较高的收缩补偿效应，这是因为加入明矾引入了硫酸根离子导致生成钙矾石的量增加，钙矾石微膨胀填充水泥水化导致的收缩从而出现补偿效应。 关键词：矿渣掺量；钙矾石微膨胀；收缩补偿效应The compensation effect of adding slag on the 关键词：矿渣掺量；钙矾石微膨胀；收缩补偿效应 Abstract The experiment of slag cement shrinkage compensation, by adjusting the different materials(slag powder, the co-ordination of Portland cement clinker, gypsum, and alum)to achieve the best results, that is a prerequisite to meet the strength to determinate the expansion rate of slag cement. While experimental discondition, The main measure is the relative expansion rate of 28 days (the relative expansion rate of 28 days = specimen length of 28 days / block length of stripping test).The different experiments can obtained the following conclusions: the slag content affect the shrinkage compensation effect of the cement; Portland cement content affect the shrinkage compensation effect of the cement; The ettringite content affect the shrinkage compensation effect of the cement. The experimente can be divided into two phases. The use of different materials in different experiments, On the first experiment (materials can be consist of slag powder、Portland cement powder and gypsum) slag powder: Portland cement powder : gypsum = 55:38:7 is the best experimental mixing ratio.You can see a significant contraction compensation effect. The second experiments on the basis of the first round of experiments reference the alum as the activating agen