超低离子渗透性水泥基材料的性能与微观结构

王信刚; 宋固全; 陈礼和; 张爱萍

doi:10.11835/j.issn.1674-4764.2009.05.026

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超低离子渗透性水泥基材料的性能与微观结构

更新时间：2023-11-28

- 超低离子渗透性水泥基材料的性能与微观结构
- Performance and Microstructure of Ultra Low Ion Permeability Cementitious Materials
- 土木与环境工程学报（中英文） 2009年31卷第5期页码：138-144
- 作者机构：
  
  1. 南昌大学建筑工程学院,南昌,330031
  3. 江西省第一建筑有限责任公司,南昌,330001
- 作者简介：
- 基金信息：
  
  国家“863”计划课题（2005AA332010）;江西省教育厅青年科学基金项目（GJJ09428）
- DOI：10.11835/j.issn.1674-4764.2009.05.026
  中图分类号：
- 纸质出版：2009
- 稿件说明：
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王信刚, 宋固全, 陈礼和, 等. 超低离子渗透性水泥基材料的性能与微观结构[J]. 土木与环境工程学报（中英文）, 2009,31(5):138-144.

WANG Xingang, SONG Guquan, CHEN Lihe, et al. Performance and Microstructure of Ultra Low Ion Permeability Cementitious Materials[J]. Journal of Civil and Environmental Engineering, 2009, 31(5): 138-144.
王信刚, 宋固全, 陈礼和, 等. 超低离子渗透性水泥基材料的性能与微观结构[J]. 土木与环境工程学报（中英文）, 2009,31(5):138-144. DOI： 10.11835/j.issn.1674-4764.2009.05.026.

WANG Xingang, SONG Guquan, CHEN Lihe, et al. Performance and Microstructure of Ultra Low Ion Permeability Cementitious Materials[J]. Journal of Civil and Environmental Engineering, 2009, 31(5): 138-144. DOI： 10.11835/j.issn.1674-4764.2009.05.026.

摘要

采用显微硬度、MIP、SEMEDXA研究了超低离子渗透性水泥基材料（Ultra Low Ion Permeability Cementitious Materials，简称ULIPCM）的微观结构，同时研究了ULIPCM的宏观性能。结果表明：ULIPCM的28 d抗压强度≥80 MPa，抗折强度≥11.0 MPa，弹性模量在38.0～42.0 GPa之间；Cl－扩散系数≤0.8×10－13m2·s－1，6 h导电量≤300 C；抗硫酸盐侵蚀性能较好；28 d收缩值可控制在400×10－6以内。ULIPCM的集料与水泥石界面过渡区的微观结构和性能得到了显著改善，有利于提高其力学性能和抗渗性能。ULIPCM的集料与水泥石界面过渡区由普通混凝土的60～100 μm细化为30 μm以下，有效阻断了侵蚀性介质的渗入通道；ULIPCM的孔隙率、最可几孔径等孔结构参数均得到了优化，显著改善了其孔结构；ULIPCM的集料与水泥石界面过渡区中的CH晶体较少，且CH晶体的取向性差。

Abstract

Microstructure and macroperformance of Ultra Low Ion Permeability Cementitious Materials (ULIPCM) were investigated by Microhardness

MIP and SEMEDXA. It was shown that the compressive strength of ULIPCM was more than 80 MPa

flexural strength was more than 11.0 MPa

and elastic modulus was in the range of 38.0 to 42.0 GPa at the age of 28 days; chloride diffusion coefficient was lower than 0.8×10－13m2·s－1

conductive charge for 6 hours was lower than 300 coulombs; sulfate attack resistance was good; shrinkage at the age of 28 days was lower than 400×10－6. Compared with ordinary concrete with which thickness of interfacial transition zone is 60 to 100 μm

the thickness of interfacial transition zone of ULIPCM was lower than 30 μm. Penetration paths of corrosive medium were effectively interrupted in ULIPCM. And pore structure parameters

such as porosity and the most probable pore radius of ULIPCM

were also obviously optimized in ULIPCM. Besides

few CH crystals were in the ULIPCM aggregate and the interfacial transition zone of ULIPCM. And the orientation of CH crystals was poor.

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