大掺量矿物掺合料复合水泥浆体的水化产物数量的研究

2011年 6月 10日

大掺量矿物掺合料复合水泥浆体的水化产物数量的研究

摘要

本文研究了粉煤灰掺量、硅灰掺量、粉煤灰与硅灰双掺对水泥净浆性能的影响。用XRD定性分析水泥的水化产物，实验结果发现浆体中，Ca(OH)2含量在早期（7d前）增加，后期逐渐减少，并且Ca(OH)2含量随着矿物掺和料掺加量的不同而变化。通过XRD对水泥浆体中的各水化物相进行分析，因而从一定程度上反映了水泥水化反应进程。

同时使用TG-DSC综合热分析方法研究不同掺量，不同养护龄期对复合水泥浆体中水泥水化的影响，其结果与XRD的检测结果相同。

关键词 ：粉煤灰 硅灰 XRD 热分析

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安徽建筑工业学院本科生毕业论文

Abstract

This paper concentrates on the influence of the replacement of fly ash and silica fume and double-mixture of fly ash and silica fume on the performance of cement mortar. The analysis of the hydrated phase of cement is by the means of XRD. And the result is as follows : Ca (OH) 2 content increased at the early stage of hydration (7 days ago)，but decreased after the 7th day. And it changed with replacement percentages of fly ash and silica fume. To some extent, the analysis of the hydrated phase demonstrates the hydrated degree of the cement by using XRD.

Meanwhile, in the research, we use TD-DSC to analyze the influence of different replacement percentages of fly ash and silica fume and different curing age on the hydration of cement, the results agree with the results by the means of XRD.

Keywords : fly ash silica fume XRD thermal analysis

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大掺量矿物掺合料复合水泥浆体的水化产物数量的研究

目录

第一章 概述 ............................................................................................. 1

1.1研究现状与前景 ............................................................................ 1 1.2 硅灰和粉煤灰性能及其对混凝土耐久性的影响 .......................... 2

1.2.1 粉煤灰和硅灰性能及应用 ........................................................ 2 1.2.2 硅灰和粉煤灰对混凝土耐久性的影响 ....................................... 3

1.3 复合水泥浆体水化产物研究及测定方法...................................... 4 1.3.1 测定Ca(OH)2含量的意义...................................................... 4 1.3.2 测定方法................................................................................ 4

第二章 原材料及试验方案 ..................................................................... 11

2.1 原材料 ....................................................................................... 11 2.2实验配比方案.............................................................................. 11 2.3 实验步骤 .................................................................................... 12 第三章 XRD对复合水泥浆体的物相分析 ............................................. 13

3.1 引言............................................................................................ 13 3.2 试验............................................................................................ 13 3.3 试验结果与讨论 ......................................................................... 14

3.3.1 龄期对水泥水化的影响 ........................................................... 14 3.3.2 配比对水泥水化的影响 ........................................................... 15

第四章 TG-DSC分析水泥浆体 .............................................................. 18

4.1 引言............................................................................................ 18 4.2 试验............................................................................................ 18

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