煤矸石混合料路面基层性能试验研究

发布时间：2018-12-13 09:32

【摘要】：煤矸石是煤炭在开采和洗选的过程中产生的固体废弃物，是世界上排放量最大的工业废物之一。若其长期堆放在地表，不仅会占用大量的土地资源、影响周围的自然景观，而且还会造成大气、土壤等污染，引起地质灾害的发生，严重威胁着周边的生态环境以及居民的生命财产安全。因此，对煤矸石进行综合利用已经迫在眉睫。本文主要研究内容：通过对煤矸石、粉煤灰、石灰粉的相关物理化学性能进行试验研究，确定该材料可以用在路面结构的基层中；然后运用均匀设计的原理，设计出10组煤矸石混合料的配比方案，通过对各组混合料的无侧限抗压强度、抗压回弹模量和劈裂强度进行试验研究，利用回归分析的方法，得出了煤矸石、粉煤灰、石灰粉的掺量与三项力学性能间的回归方程，并分析了掺合料的掺量对三项力学性能的影响，得出了符合本文研究范围的掺合料比较合理的掺量范围。研究结果表明：该煤矸石混合料在路面结构的基层中的应用性能良好，已经达到了工程可应用范围。
[Abstract]:Coal gangue is the solid waste produced in the process of coal mining and washing, and it is one of the largest industrial wastes in the world. If it is stacked on the earth's surface for a long time, it will not only occupy a lot of land resources and affect the surrounding natural landscape, but also cause air and soil pollution, and cause geological disasters. It is a serious threat to the surrounding ecological environment and the safety of residents' lives and property. Therefore, the comprehensive utilization of coal gangue is imminent. The main contents of this paper are as follows: through the experimental study on the physical and chemical properties of coal gangue, fly ash and lime powder, it is determined that the material can be used in the base course of pavement structure; Then, by using the principle of uniform design, the proportion scheme of 10 groups of coal gangue mixture is designed. Through the experimental study on the unconfined compressive strength, modulus of resilience and splitting strength of each group of mixtures, the regression analysis method is used. The regression equation between the content of coal gangue, fly ash and lime powder and the three mechanical properties is obtained. The influence of the content of coal gangue, fly ash and lime powder on the three mechanical properties is analyzed. The results show that the coal gangue mixture has good application performance in the base course of pavement structure and has reached the range of engineering application.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414

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