西南交通大学学报2025，Vol.60Issue(5)：1149-1159,11.DOI:10.3969/j.issn.0258-2724.20230350
赤泥基稳定碎石抗冻融性能分析
Freeze-Thaw Resistance of Red Mud-Based Stabilized Crushed Stone
摘要
Abstract
In order to achieve the safe application of red mud-based cementitious materials in road engineering,the mechanical properties and quality of red mud-based stabilized crushed stone base under freeze-thaw cycles were studied.The influence of freeze-thaw cycle temperature and number on mechanical properties and quality loss was explored by industrial CT scanning and SEM-EDS.Research has shown that when the temperature ranges from 20℃to-20℃for 28 days,the maximum quality loss rate of the cementitious material with a 5%dosage is 1.85%.The change in quality loss rate of stabilized crushed stone with 5%and 6%red mud-based cementitious materials is higher than that with 7%and 8%red mud-based cementitious materials.In addition,with the increase in freeze-thaw cycles,the quality loss rate continues to increase.Through industrial CT and SEM-EDS microscopic analysis,as the number of freeze-thaw cycles increases,the porosity of stabilized crushed stone increases.After the stabilized crushed stone undergoes 28 days of curing and 20 freeze-thaw cycles with a 6%dosage,the porosity increases by 1.53%,and internal crack damage increases and accumulates continuously,showing a changing pattern from less to more and from narrow to wide.The research results have a positive role in promoting the green construction of transportation engineering and the large-scale application of red mud.关键词
赤泥基胶凝材料/路面基层/冻融次数/冻融温度/作用机理Key words
red mud-based cementitious material/road base layer/number of freeze-thaw cycle/freeze-thaw temperature/mechanism of action分类
交通工程引用本文复制引用
何敬源,高伟豪,张健,王川,李召峰,游浩..赤泥基稳定碎石抗冻融性能分析[J].西南交通大学学报,2025,60(5):1149-1159,11.基金项目
国家重点研发计划(2022YFB2601903) （2022YFB2601903）
山东省重点研发计划(重大科技创新工程)(2023ZLGX01,2021CXGC010301) 山东省博士后科技创新项目(SDCX-ZG-202203037). （重大科技创新工程）
