【摘要】 针对传统人工骨料制备工艺能耗高、污染大等问题，以淤泥渣土、电石渣及脱硫石膏等工业固废为原材料，通过水热固化技术制备高强度人工骨料，研究其不同钙硅比（Ca/Si=0.4～1.0）时的耐水、耐酸、耐干湿循环、耐冻融循环性，并与天然骨料进行了实际应用对比。结果表明，当Ca/Si=0.9时，人工骨料的无侧限抗压强度峰值达39.1 MPa，软化系数为0.85，且耐酸性、耐冻融循环、耐干湿循环性明显优于其他配比。人工骨料碎石基层的7 d无侧限抗压强度、弯拉强度、弹性模量与天然碎石接近，吸水率与压碎值符合JTG/T F20—2015《公路路面基层施工技术细则》要求。更多还原

【Abstract】 To tackle the high energy consumption and pollution associated with conventional artificial aggregate production,this study employs industrial solid wastes including sludge,carbide slag,and desulfurization gypsum to fabricate high-strength artificial aggregates via hydrothermal curing. By varying the calcium-to-silicon ratio(Ca/Si=0.4～1.0),the resistance to water,acid,dry–wet cycles and freeze-thaw cycles was studied and compared with that of natural aggregates in practical applications. Results demonstrate that at Ca/Si=0.9,the aggregate achieves a peak unconfined compressive strength of 39.1 MPa and a softening coefficient of0.85. Moreover,it exhibits superior resistance to acid,freeze-thaw cycles,and dry-wet cycles compared to other ratios. When crushed and applied in a water-stabilized macadam base course,the aggregate shows performance close to that of natural aggregates. The 7-day unconfined compressive strength,flexural tensile strength and elastic modulus of artificial aggregates are close to that of natural aggregates,and the water absorption and crushing value meet the requirements of standard JTG/T F20 —2015 "Technical Guidelines for Construction of Highway Roadbases".更多还原