垃圾焚烧炉渣在三轴试验中的力学特性和破碎特性  

Mechanical and Crushing Characteristics of Waste Incineration Slag in Triaxial Test

作　　者：李越 LI Yue(Shanghai Feiyao Geotechnical Engineering Co.,Ltd.,Shanghai 201600,China)

机构地区：[1]上海飞耀岩土工程有限公司,上海201600

出　　处：《科技和产业》2024年第13期252-257,共6页Science Technology and Industry

摘　　要：以上海某生活垃圾焚烧厂产生的炉渣为研究对象,对垃圾焚烧炉渣进行X射线荧光光谱分析,得到炉渣的化学成分组成。然后对干燥状态下的炉渣进行三轴试验,并在试验后进行颗粒筛分,得到垃圾焚烧炉渣在三轴试验中的力学特性和破碎特性。最后,将三轴试验数据和直剪试验数据进行对比,分析炉渣在不同试验中的强度指标和颗粒破碎程度,定量描述炉渣颗粒的破碎率。研究发现,当三轴试验的围压达到一定大小后,由剪切作用产生的破碎率将不再增长,此时剪切面处的颗粒已经全部破碎,即如果用更大的围压力进行三轴试验,实际增加的只是压缩破碎率。The research object is slag produced by a domestic waste incineration plant in Shanghai.The chemical composition of the waste incineration slag was obtained by X-ray fluorescence spectrum analysis.Then,triaxial tests were performed on the slag in dry state,and slag particles were screened after the tests.The mechanical and crushing characteristics of slag in triaxial tests were obtained.Finally,the triaxial test data and direct shear test data were compared,the strength index and particle crushing degree of slag in different tests were analyzed,and the crushing rates of slag particle were quantitatively described.It is shown that when the surrounding pressure of triaxial test reaches a certain value,the crushing rate generated by shear will no longer increase,all particles on the shearing surface are broken at this time.That is,if the triaxial test is performed with greater surrounding pressure,the actual increase is only the compression crushing rate.

关 键 词：垃圾焚烧炉渣 颗粒破碎 直剪试验 三轴试验 强度指标 破碎率 

分 类 号：TU411[建筑科学—岩土工程]