电阻率法研究矿物掺合料对水泥早期水化的影响.pdfVIP

( ) 2 0 0 4 年 第 3 期 总第 173 期 混 　 　凝 　 　土 全 国 建 筑 科 学 核 心 期 刊 Number 3 in 2004 ( Total No. 173) Concrete China Building Science Core Periodical　 电阻率法研究矿物掺合料对水泥早期水化的影响 张丽君 , 　何 　真 , 　梁文泉 (水资源与水电工程科学国家重点实验室 武汉大学 ,湖北 武汉 　430072) [ 摘　要] 　进一步开发利用矿物掺合料潜在的水化活性一直受到关注。有文献表明 :水泥浆体的早期水化与其电阻率有着一定的关系 ,但 用电阻率法对水泥浆体早期水化研究较少。基于此 ,本文研究了掺矿物掺合料浆体的水化过程 ,并采用一种新型仪器———非接 触式电阻率测量仪。试验还通过强度测试和 XRD 作了定量和定性的分析。结果表明 : 电阻率曲线不仅表现了掺不同矿物掺合 料的浆体的水化过程 ,也表现了不同矿物掺合料的活性的大小。强度试验和 XRD 对矿物掺合料的活性作了进一步的证实。 [ 关键词] 　无电极 ; 　电阻率 ; 　离子浓度 ; 　强度 ; 　XRD ( ) [ 中图分类号] 　TU528 041 　　　[ 文献标识码] 　A 　　　[ 文章编号] 　1002 - 3550 2004 03 - 0032 - 04 Resistivity study on early hydration of mineral admixture ZHA N G L ijun , 　HE Zhen , 　L IA N G Wenquan ( State key laboratory of water resources and hydropower engineering science ,Wuhan University ,Wuhan Hubei 430072 ,China) 　　Abstract : 　The potential hydration activities of mineral admixtures which were developed and utilized ,were always concerned. At the same time ,there were some relationships between the early hydration of cement paste and the resistivity in the literatures ,But slighter for the early hydration of cement paste. In this paper hydration of cement incorporating mineral admixtures were studied by a noncontacting electrical resistivity measurement device ,and were quantitatively and qualitatively analyzed by strengths and xray diffrac tions again. The experimental results show that the curves not only show the hydration processes of cement incorporating difference mix tures ,but also show activities. The strength exper