太原理工大学学报2026，Vol.57Issue(5)：956-963,8.DOI:10.16355/j.tyut.1007-9432.20240222
混菌矿化对不同粒径再生骨料物理力学性能影响研究
Effect of Mineralization of Non-axenic Bacteria on the Physical and Mechanical Properties of Recycled Aggregates with Different Particle Sizes
摘要
Abstract
[Purposes]Microbial mineralization can significantly improve the physical and me‑chanical properties of recycled aggregates.A method of enhancing the properties of recycled aggre‑gates with the mineralization of aerobic non-axenic bacteria is proposed.The enhancement efficiency of recycled aggregates with different particle sizes based on the mineralization of non-axenic bacteria is optimized.[Methods]Compared with the method of axenic bacteria mineralization,the enhancement effectiveness of the mineralization of aerobic non-axenic bacteria on the properties of recycled aggre‑gates was verified.Then,the effect of enhancement time on the properties of recycled aggregates with different particle sizes was investigated.Finally,the compressive strength and slump of recycled con‑crete prepared with enhanced aggregates by the mineralization of non-axenic bacteria were tested.[Results]The results show that aerobic non-axenic bacteria,compared with axenic bacteria,exhibit more marked efficiency in physical and mechanical properties enhancement of recycled aggregates.The enhancement of recycled aggregates exhibits higher efficiency if smaller particle sizes of aggre‑gates are used.The recycled aggregates with larger particle sizes exhibit an obvious optimal enhance‑ment time.The water absorption and crushing index could decrease by 21.4％and 27.8％,respective‑ly,compared with the non-enhanced aggregates.The maximum increasing extents of compressive strength and slump of recycled concrete with enhanced recycled aggregates by mineralization of non-axenic bacteria reach 15.3％and 16.8％,respectively.关键词
混菌矿化/再生骨料/骨料粒径/物理力学性能/再生混凝土Key words
mineralization of non-axenic bacteria/recycled aggregate/particle size of aggregate/physical and mechanical property/recycled concrete分类
建筑与水利引用本文复制引用
张少军,张家广,马奥炜,陈景琦,刘元珍,周爱娟..混菌矿化对不同粒径再生骨料物理力学性能影响研究[J].太原理工大学学报,2026,57(5):956-963,8.基金项目
中央引导地方科技发展资金项目(YDZJSX20231B005) （YDZJSX20231B005）
山西省基础研究计划自然科学研究面上项目(202203001221065) （202203001221065）
