市政技术2026，Vol.44Issue(9)：114-121,8.DOI:10.19922/j.1009-7767.2026.09.114
盐渍土环境下固废基路面砖抗泛碱性能及养护方式适配性研究
Study on Efflorescence Resistance and Curing Method Adaptability of Solid-waste-based Pavement Bricks in Saline Soil Environment
摘要
Abstract
To address the efflorescence problem of concrete pavement bricks in saline soil regions and clarify the adaptability between anti-efflorescence measures and curing regimes,solid-waste-based pavement bricks were taken as research objects.Model tests were carried out by simulating dry-wet alternation via rainfall-air-drying cy-cles.Three anti-efflorescence measures,namely mix-proportion modification,surface treatment and bedding-course treatment,together with four curing regimes(natural curing,standard curing,film-covered curing and water-immersed curing)were compared and analyzed.The results show that the migration of free alkaline ions in saline soil is the primary cause of pavement-brick efflorescence.Mix-proportion modification with silica fume and fly ash delivers the best anti-efflorescence performance,with no obvious efflorescence observed after 10 dry-wet cycles.Surface treatment can mitigate efflorescence yet performs worse than mix-proportion modification.For bedding-course treatment,hydrophobic mortar outperforms fluid solidified soil.Efflorescence of reference-mix pavement bricks is strongly affected by curing regimes,among which standard curing achieves the optimum efflorescence-in-hibition effect.The modified mix proportion features high adaptability to various curing regimes,and no efflorescence occurs under all curing conditions.The optimal scheme is finally determined as"modified mix proportion+natural/film-covered curing+surface treatment".It synergistically restrains efflorescence through source control of alkaline ions,blocking of migration paths and guaranteed curing quality,providing technical support for the application of solid-waste-based pavement bricks in saline soil areas.关键词
路面砖/抗泛碱/改良配合比/养护方式Key words
pavement brick/efflorescence resistance/mix-proportion modification/curing regime分类
建筑与水利引用本文复制引用
王建宁,石宏壮,孙欢,任伟,叶帅华..盐渍土环境下固废基路面砖抗泛碱性能及养护方式适配性研究[J].市政技术,2026,44(9):114-121,8.基金项目
甘肃省住房和城乡建设厅2024年建设科技项目(JK2024-12) （JK2024-12）
