路面基层矿渣粉稳定全固废混合料力学性能试验研究
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中图分类号：U414 文献标识码：A
Experimental Study on Mechanical Properties of Pavement Base with All Solid Waste Mixture Stabilized by Mineral Powder
CUI Hanlong¹，FU Zhidong1*，WU Hongfei²，MENG Wenqing'， ZHANG Yapeng1 （1.School of Civil Engineering，Hebei University of Engineering，Handan，Hebei O56O38，China; 2.HebeiGuangtai Road and Bridge Engineering Group Co.，Ltd.，Handan，Hebei O56Ooo，China）
Abstract：To enhance the utilization rate of industrial solid waste，a study was conducted on the mechanical properties of stabilized pavement base mixtures using granulated blast furnace slag powder as the binder，with the full solid waste （steel slag，coal gangue，and recycled powder） as the raw material.The uniform design method was employed，with the proportions of steel slag，coal gangue，and recycled powder as factors，and the 7-day unconfined compressive strength，12O-day compressive rebound modulus，and 12O-day spliting strength as the target response values. Six sets of test mix ratios （mass ratios）were designed for the experiments，and the test resultswere analyzed using JMP software.A mathematical model was established between the different material proportions and the three mechanical performance indicators. The mixed material's spliting fracture surface images were processed using Image Jsoftware to reveal the main reasons for the mechanical strength at the micro level. The research results show that the mechanical properties of the mixture increase with the increase in steel slag proportion；the increase in recycled powder proportion has an adverse effect on the initial mechanical strength of the mixture，but the later mechanical strength shows a trend of increasing first and then decreasing with the increase in recycled powder proportion，so its proportion should not exceed 35% . The regression equation obtained through variance analysis has a high fiting degree and can provide guidance for
practical engineering.
Key words： industrial solid waste；road mechanical properties；mixture uniform design；digital image processing；regression analysis
近年来，随着我国工业化进程的不断推进，大量工业固体废弃物的排放给人类的生存环境带来了严重威胁，且在“双碳”目标的战略推动之下，如何实现固体废弃物的资源化利用更是成为了社会各界广泛关注的焦点问题[1-2]。（剩余7512字）
