长春工程学院学报（自然科学版）2026，Vol.27Issue(1)：17-22,6.DOI:10.3969/j.issn.1009-8984.2026.01.003
基于多因素指标的新拌液态粉煤灰配合比优化
Optimization of mix proportion of fresh liquid fly ash based on multiple factor indicators
摘要
Abstract
To address the backfilling challenges in abutment,utilitytrench,and other similar areas,while balancing the needs of conservation and economy,this study added a certain amount of hydrated lime to the existing liquid fly ash and designed and proposed a new type of mixed liquid fly ash material.By analyzing the effects of cement,lime content,and water content on the flowability,unconfined compressive strength,and shrinkage deformation of freshly mixed liquid fly ash,the mix proportion is optimized.The results indi-cate that water content plays a dominant role in fluidity.The cement content is an important factor affect-ing the compressive strength and shrinkage deformation of the mixture.The amount of lime has a relatively small impact on the early strength,but a greater impact on the later strength.Moreover,when the cement content is low,the impact of lime on strength is more prominent.When the mass ratio of cement,lime,and fly ash is 6∶4∶90 and the water content is 60%～65%,the consistency of the mixture reaches 11.6～12.4 cm,meeting the flowability requirements.The 7 days unconfined compressive strength is 0.72 MPa,the 28 days compressive strength is 1.44 MPa,and the 90 days shrinkage value is 117.6×10-3 mm.All indicators meet the standards of the"Specification for Design of Highway Subgrades".This mix proportion has the best unit cost and comprehensive performance,and is the optimal mix proportion.关键词
新拌液态粉煤灰/消石灰/流动度/无侧限抗压强度/收缩变形Key words
fresh liquid fly ash/lime/flowability/compressive strength/shrinkage deformation分类
交通工程引用本文复制引用
丛杰,李栋国,张洪军,徐鼎盛,刘国龙,陈喜龙..基于多因素指标的新拌液态粉煤灰配合比优化[J].长春工程学院学报（自然科学版）,2026,27(1):17-22,6.基金项目
吉林省科技厅项目(20240304146SF)长春工程学院大创项目(S202511437134) （20240304146SF）
