宁夏工程技术2024，Vol.23Issue(2)：146-153,159,9.
基于孔隙结构特征的透水混凝土性能评价与分析
Evaluation and Analysis of Pervious Concrete Performance Based on Pore Structure Characterization
摘要
Abstract
To explore the effects of different factors on the mechanical properties,permeability,and pore characteristics of pervious concrete(EPC),four factors of water-cement ratio,aggregate-to-cement ratio,fly ash content,and gangue content were chosen.A single-factor experimental method was adopted to study the influence of each factor at varying levels on EPC performance.The internal pore characteristics of the concrete were quantified using IPP image analysis.Models for the permeability coefficient and compressive strength of EPC were established.The entropy weight method combined with grey correlation theory was utilized for a comprehensive evaluation of the influencing factors on EPC performance.It is found that the compressive strength and splitting tensile strength of EPC are positively correlated,fitting a specific functional relationship.The F of EPC demonstrated a relatively high tensile-to-compressive strength ratio,indicating that fly ash effectively improves EPC toughness.The equivalent pore size was identified as a characteristic pore size.Based on pore characteristics and total slurry area,models for the permeability coefficient and compressive strength of EPC were developed.The M of EPC showed a relatively high correlation,with the highest comprehensive evaluation score of 89.56%when the coal gangue content was 60%.关键词
透水系数/劈裂抗拉强度/煤矸石/图像分析法/特征孔径/灰色关联分析Key words
permeability coefficient/splitting tensile strength/coal gangue/image analysis method/characteristic pore size/grey correlation analysis分类
土木建筑引用本文复制引用
朱海峰,娄亮,张东生,毛明杰..基于孔隙结构特征的透水混凝土性能评价与分析[J].宁夏工程技术,2024,23(2):146-153,159,9.基金项目
宁夏回族自治区重点研发项目(2022BDE93016,2021BEG02014) （2022BDE93016,2021BEG02014）
