生物酵素酶土壤固化技术在道路工程中的试验研究

发布时间：2018-09-18 09:00

【摘要】：随着国家城镇化建设的不断深入,道路工程迎来了又一次大规模的建设和发展。对于既有道路的修补工程和新建道路的路基、路面工程而言,土壤固化技术都十分重要,如何在保证工程技术的同时,降低工程造价、缩短工期、减少环境污染成为了现如今道路工程固化技术的关键所在。生物酵素酶土壤固化技术基本依托生物酵素酶来实现。生物酵素酶土壤固化剂是一种新型环保材料,对环境无污染,还可保证固化土较强的力学和路用性能。本文首先明确研究方向和内容、分析固化机理,通过工程性质比对试验证明生物酵素酶固化土较原状土有更高的工程使用价值,随后进行一系列的路用性能试验,体现生物酵素酶固化土优良的路用性能指标,最后通过经济效益和社会效益两方面的分析,达到对生物酵素酶土壤固化技术研究、推广目标。本文主要通过试验数据表明生物酵素酶固化土更高的工程价值。剪切强度试验是为了测定摩擦角和粘聚力,以比较固化土及原状土的工程性质;固结压缩试验主要是为了比较固化土和原状土的压缩系数和压缩模量指标,以进一步突出固化土的固化效果;无侧限抗压试验、劈裂试验和抗压回弹模量试验分别测定7天、14天、21天、30天试验值,明确固化剂最优使用剂量,得出试验指标;水稳定试验、抗冻试验分别在指定时间内标准养护,并表现土壤路用性能的水稳性和抗冻性。本文的研究数据对生物酵素酶土壤固化技术的推广起到一定的指导作用,有利于专家对该技术的进一步研发。
[Abstract]:With the development of urbanization, road engineering is facing another large-scale construction and development. Soil curing technology is very important for the repair of existing roads and the subgrade of newly built roads and pavement engineering. How to reduce the project cost and shorten the construction period while ensuring the engineering technology, Reducing environmental pollution has become the key of road engineering solidification technology. The technology of soil solidification is based on enzyme. Bio-enzyme soil curing agent is a new kind of environmental protection material, which can not pollute the environment, but also can guarantee the strong mechanical and road performance of the solidified soil. In this paper, firstly, the research direction and content are defined, and the mechanism of solidification is analyzed. It is proved by the comparison of engineering properties that the enzyme solidified soil has higher engineering use value than the undisturbed soil, and then a series of road performance tests are carried out. Through the analysis of economic and social benefits, the study on the soil solidification technology of biozyme enzyme has been achieved and the goal of popularization has been achieved by means of the analysis of the good road performance index of the soil solidified by biological enzyme and the analysis of the economic and social benefits at last. In this paper, the experimental data show that the biological enzyme solidified soil is of higher engineering value. The shear strength test is to measure the friction angle and cohesive force to compare the engineering properties of the solidified soil and the undisturbed soil, and the consolidation compression test is mainly to compare the compression coefficient and the compression modulus index of the solidified soil and the undisturbed soil. In order to further highlight the solidification effect of solidified soil, the unconfined compressive test, split test and modulus test of compressive resilience were used to determine the experimental values of 7 days, 14 days and 21 days and 30 days, respectively, to determine the optimum dosage of curing agent and to obtain the test index; the water stability test, The frost resistance test showed the water stability and frost resistance of the soil in the specified time. The data of this paper play a guiding role in popularizing the soil solidification technology of enzyme, and are beneficial to the further development of this technology by experts.
【学位授予单位】：沈阳大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U414

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