| 26 | 0 | 61 |
| 下载次数 | 被引频次 | 阅读次数 |
采用室内土工试验探究了粗颗粒组分对流态固化土性能的影响规律，以不同质量分数(0～50%)及粒径(1～5 mm、5～10 mm、10～15 mm)的碎石等质量替代原混合料制备试件。通过室内流动性和力学性能试验对试样的流动度及力学特性进行了研究。试验结果得出：试样流动度随碎石掺量增加而降低，满足流态固化土回填设计要求须将粒径5 mm以上碎石的掺量控制在30%以内；在力学性能方面，掺入碎石组在3、7、14、28 d的强度平均值分别达到1.20、2.14、2.73、3.37 MPa，相较未掺入碎石的基准组，提升幅度依次为33.3%、35.4%、45.0%和62.0%，增强效果随龄期延长而持续增大；通过对试验数据进行回归分析，得到试样变形模量与无侧限抗压强度之间的关系为E50=(27～50)qu。
Abstract：The investigation into the influence of coarse-grained components on the properties of fluidized solidified soil was conducted through laboratory geotechnical tests. During specimen preparation, a portion of the original mixture was replaced with gravel on an equal-mass basis. The mixtures were prepared with varying gravel mass fractions(0～50%) and particle size ranges(1～5 mm,5～10 mm,10～15 mm).Subsequently,indoor fluidity tests and mechanical property tests were conducted to characterize the performance of the prepared specimens. To meet the backfilling design requirements of fluidized solidified soil, the dosage of crushed stones with a particle size of more than 5 mm must be controlled within 30%.In terms of mechanical performance,the average strengths at 3 d,7 d,14 d,and 28 d were 1.20 MPa,2.14 MPa,2.73 MPa,and 3.37 MPa,respectively.These values represent improvement rates of 33.3%,35.4%,45.0% and 62.0% compared to the control group without crushed stones,indicating that the strengthening effect continues to enhance with curing age. Through regression analysis of the test data, the relationship between the deformation modulus and the unconfined compressive strength of the specimens is obtained as E50=(27～50)qu.
[1]崔建，徐公允，姚志刚，等.基于模糊理论的泥水平衡盾构泥浆输送性能评价[J].铁道建筑，2025,65(5):102-108.Cui Jian,Xu Gongyun,Yao Zhigang,et al.Evaluation of mud conveying performance of slurry balance shield based on fuzzy theory[J].Railway Engineering,2025,65(5):102-108.
[2]鞠鹏.纤维加筋流态固化土力学特性及流变特性试验研究[D].咸阳：西北农林科技大学，2025:1.Ju Peng. Experimental Study on the mechanical and rheological properties of fiber-reinforcedfluid-consolidated soil[D].Xianyang:Northwest A&F University,2025:1.
[3]American Concrete institute. ACl 116 Cement and concrete terminology[S].
[4]Fall M,Benzaazoua M. Modeling the effect of sulphate on strength development of pastebackfill and binder mixture optimization[J]. Cement and Concrete Research,2005,35(2):301-314.
[5]Claisse P,Ganjian E,Tyrer M.The use of secondary gypsum to make a controlled low strength material[J]. The Open Construction and Building Technology Journal,2009,2(1):294-305.
[6]Fujita R,Horiguchi T,Kudo T,et al. Applicability of CLSM with incinerated sewage sludge ash and crushed-stone powder[J].Engineering, Environmental Science,Materials Science,2010:53-65.
[7]王艳，杨虎，杨满满，等.黄泛区地铁渣土制备高流动土试验研究[J].地球科学，2022,47(12):4698-4709.Wang Yan,Yang Hu,Yang Manman,et al.Preparation tests of high flowing soil from subway residue soil in yellow river flooding area[J]. Journal of Earth Science,2022,47(12):4698-4709.
[8]陈颖，李东，耿健，等.工程渣土联合建筑垃圾砂制备可控低强度材料的性能试验[J].上海大学学报（自然科学版），2026,32(1)153-165.Chen Ying,Li Dong,Geng Jian,et al. Performance test of controlled low strength material prepared by engineering waste soil combined with construction waste sand[J].Journal of Shanghai University(Natural Science Edition),2026,32(1)153-165.
[9]闭东民，孔纲强，陈庚，等.废弃口罩加筋固化土的强度特性与破坏模式[J].防灾减灾工程学报，2022,42(5):993-998,1009.Bi Dongmin,Kong Gangqiang,Chen Geng,et al. Strength characteristics and failure mode of solidified soil reinforced by waste masks[J]. Journal of Disaster Prevention and Mitigation Engineering,2022,42(5):993-998,1009.
[10]贾沼霖，赵启翔，练继建，等.海上风电基础工业废渣-水泥流态固化土抗冲刷性研究[J/OL].太阳能学报，1-8[2025-07-24]. https：//doi. org/10.19912/j. 0254-0096. tynxb. 2025-0476.Jia Zhaolin,Zhao Qixiang,Lian Jijian,et al.Research on scour resistance of industrial waste slag cement fluidized curing soil for offshore wind power foundation[J/OL]. Acta Energiae Solaris Sinica,1-8[2025-07-24]. https：//doi. org/10.19912/j.0254-0096.tynxb.2025-0476.
[11]He J,Li Z X,Wang X Q,et al.Durability of soft soil treated with soda residue and ground granulated blast furnace slag in a soaking environment[J]. Journal of Materials in Civil Engineering,2020,32(3):06019018.
[12]张仁杰，周永祥.土颗粒细度对流态固化土性能的影响研究[J].新型建筑材料，2025,52(8):1-5.Zhang Renjie,Zhou Yongxiang.Study on the influence of soil particle fineness on the performance of flowable solidified soil[J].New Building Materials,2025,52(8):1-5.
[13]张丹，姚达，邱成春，等.减水剂对固化土强度影响的研究[J].中国港湾建设，2024,44(1):39-43,67.Zhang Dan,Yao Da,Qiu Chengchun,et al. Study on the influence of water-reducing agent on the strength of solidified soil[J].China Harbour Engineering,2024,44(1):39-43,67.
基本信息:
中图分类号:TU41
引用信息:
[1]孙国臣,熊宇星,蔡仙发,等.考虑碎石掺量影响的流态固化土流动度及力学特性试验研究[J].铁道建筑,2026,66(07):48-53.
基金信息:
国家自然科学基金（52568051）; 江西省自然科学基金（20252BAC240359）
2026-07-20
2026-07-20