[1]张亚梅,余保英.掺超细矿粉水泥基材料早龄期水化产物及孔结构特性[J].东南大学学报(自然科学版),2011,41(4):815-819.[doi:10.3969/j.issn.1001-0505.2011.04.030]
 Zhang Yamei,Yu Baoying.Characteristics of hydration products and pore structure in cement-based material with ultra fine slag at early ages[J].Journal of Southeast University (Natural Science Edition),2011,41(4):815-819.[doi:10.3969/j.issn.1001-0505.2011.04.030]
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掺超细矿粉水泥基材料早龄期水化产物及孔结构特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第4期
页码:
815-819
栏目:
材料科学与工程
出版日期:
2011-07-20

文章信息/Info

Title:
Characteristics of hydration products and pore structure in cement-based material with ultra fine slag at early ages
作者:
张亚梅余保英
(东南大学材料科学与工程学院, 南京 211189)(东南大学江苏省土木工程材料重点实验室,南京 211189)
Author(s):
Zhang YameiYu Baoying
(School of Materials Science and Engineering, Southeast University, Nanjing 211189, China)
(Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing 211189, China)
关键词:
超细矿粉普通矿粉水泥基材料孔结构水化产物
Keywords:
ultra fine slag ordinary slag cement-based material pore structure hydration products
分类号:
TU528
DOI:
10.3969/j.issn.1001-0505.2011.04.030
摘要:
选用超细矿粉配制水泥基材料,比较了其与普通矿粉对水泥浆体的力学性能影响.分别通过XRD和MIP分析了硬化水泥浆体的水化产物、最可几孔径及孔隙率.分析结果表明,粒径明显偏小的超细矿粉具有较高的火山灰反应活性,1 d时水化产物中Ca(OH)2的衍射峰明显低于纯水泥浆体和掺普通矿粉的水泥浆体,超细矿粉能显著促进水泥基材的早龄期水化.MIP分析发现,早龄期时掺超细矿粉的水泥浆体的最可几孔径和累积孔隙率均小于掺普通矿粉的水泥浆体和纯水泥浆体,表明超细矿粉在早龄期时就起到了细化浆体孔结构、提高密实度的作用.
Abstract:
The early age mechanical performance of cement-based material incorporated with ultra fine slag and ordinary slag were comparatively investigated. The hydration products, pore size and porosity of cement-based material were tested with XRD (X-ray diffraction) and MIP (mercury intrusion porosimetry), respectively. The low peak strength of Ca(OH)2 obtained from XRD analysis show that ultra fine slag with significantly smaller particle size than ordinary slag has higher pozzalanic activity than ordinary slag, which suggests that the addition of ultra fine slag can promote the hydration process of cement-based material at early ages. Results from MIP test reveal that the addition of ultra fine slag to cement paste can reduce both the characteristic pore size and the porosity and hence optimize the pore structure and increase the density of hardened cement paste.

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备注/Memo

备注/Memo:
作者简介:张亚梅(1968—),女,博士,教授,博士生导师,ymzhang@seu.edu.cn.
基金项目:国家重点基础研究发展计划(973计划)资助项目(2009CB623200).
引文格式: 张亚梅,余保英.掺超细矿粉水泥基材料早龄期水化产物及孔结构特性[J].东南大学学报:自然科学版,2011,41(4):815-819.[doi:10.3969/j.issn.1001-0505.2011.04.030]
更新日期/Last Update: 2011-07-20