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钙基地聚合物孔结构对其28d抗压强度的影响
Effect of Pore Structure of Calcium Based Geopolymer on 28 d Compressive Strength
投稿时间:2016-06-27  修订日期:2016-08-31
DOI:103969/j.issn.1007 9629201704009
中文关键词:  钙基地聚合物  氮气吸附法  孔隙结构  分形维数  灰色关联分析
英文关键词:calcium based geopolymer  nitrogen adsorption method  pore structure  fractal dimension  grey correlation analysis
基金项目:国家自然科学基金资助项目(51468009/E080511);广西高等学校科研项目(YB2014126)
              
作者单位
马骁
MA Xiao
桂林电子科技大学建筑与交通工程学院,广西桂林541004
School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin 541004, China
叶雄伟
YE Xiongwei
桂林电子科技大学机电工程学院,广西桂林541004
School of Mechancial & Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004,China
朱杰
ZHU Jie
桂林电子科技大学建筑与交通工程学院,广西桂林541004
School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin 541004, China
何巨鹏
HE Jupeng
桂林电子科技大学建筑与交通工程学院,广西桂林541004
School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin 541004, China
谢雪鹏
XIE Xuepeng
桂林电子科技大学建筑与交通工程学院,广西桂林541004
School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin 541004, China
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中文摘要:
      为了研究钙基地聚合物孔结构与抗压强度的关系,基于氮气吸附试验数据,运用灰色系统理论分析了钙基地聚合物孔隙结构参数、分形维数及孔径分布对其抗压强度的影响规律,并建立了28d抗压强度预测模型.结果表明:钙基地聚合物孔隙结构参数中孔比表面积与其28d抗压强度正关联,且对其抗压强度影响程度最大;分形维数D3与其28d抗压强度正关联,且关联度最大;不同的孔径范围与其28d抗压强度负关联,>100nm的孔径区间对钙基地聚合物28d抗压强度的影响最大;建立的钙基地聚合物28d抗压强度GM(1,8)预测模型,其强度预测值与实测值吻合较好,精度较高,平均相对误差为322%.
英文摘要:
      In order to study the relationship between the pore structure of calcium based geopolymer and the compressive strength, on the basis of the data obtained from the nitrogen adsorption experiment, the grey system theory was used to analyze the impact of the pore structure parameters, the fractal dimensions and the distribution of aperture on the compressive strength and a prediction model for the 28d compressive strength was established. The results show that among the pore structure parameters, the pore specific surface area is positively associated with the compressive strength and causes the greatest influence on the compressive strength. Among the fractal dimensions, D3 is positively and most closely correlated with the compressive strength. Different aperture in different scopes is negatively correlated with the compressive strength, and the aperture of more than 100nm has the most significant impact on the 28d compressive strength of calcium based geopolymer. In the GM(1, 8) prediction model for the 28d compressive strength of calcium based geopolymer, the predictive value of strength is in accordance with the actual value with a high accuracy and the average relative error is 322 %.
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