电石渣-石灰复合固化废弃泥浆的力学性能研究

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【中图分类号】：U414 【文献标志码】：A 【文章编号】：1008-3197（2026）01-69-04

【DOI编码】：10.3969/j.issn.1008-3197.2026.01.014

Study on the Mechanical Properties of Carbide Slag-Lime Composite Stabilizer WasteSlurryUsedforRoadbedFiller

FAN Weixin， ZHAO Guopu

（Tianjin Transportation Research Institute，Tianjin 3OoO74，China）

【Abstract】 ∵ Aiming at the resource utilization issue of waste slurry produced in bored pile engineering，it is proposed to usecarbide slag-limecompositesolidification technology tomodifyitinto roadbed fillr material，and its strength development lawand micro-mechanismare systematically studiedby combining laboratory test with field verification.Laboratory test results show that when using carbide slag alone，a 10% addition achieves the optimal early strength and long-term strength，whileexcessve carbide slag leads to strength reduction due to adilution effct.The introductionoflime asan activator forms an eficient physical-chemical synergistic solidification system；adding lime to a 10% carbide slag base significantly increases the 7d strength.Microscopic analysis confirmsthatthehighlyalkaline environment provided bylime effctivelyactivates thepozzolanic activity of carbide slag，promoting the formationof hydratedcalcium silicate（C-S-H）gel，achieving a qualitativetransformation fromphysical filing tochemical bonding.Field verification shows that the90d strengthof the solidified slurry meets the specifications for road sub-base layers.

【Key words】：carbide slag；waste slurry；roadbed filler

钻孔灌注桩因适用性强、工艺成熟等特点被广泛应用，但伴随产生的巨量工程废弃泥桨已成为亟待解决的重大环境问题与工程挑战。（剩余3857字）