新型路面修补材料的开发与研究

发布时间：2018-11-13 10:23

【摘要】：水泥混凝土路面是一种刚性大、承载力大、稳定性好的高级路面。随着交通量的增加,环境污染日益严重,水泥混凝土路面更容易出现局部损坏,若不及时修补,会造成更大的经济损失。目前存在的路面修补材料成本高,不能做到经济绿色环保。本文的主要目的是研究出经济绿色环保的水泥混凝土路面修补材料,采用工业废渣为主要原料,通过掺合料、纤维和聚合物改善路面修补材料的性能,从而达到路面修补材料的相容性、工作性、耐久性、收缩率、粘接性的要求,并利用红外光谱、X射线衍射、SEM对砂浆的微观结构进行分析。研究结果表明:通过试验研究砂浆的流动度、抗压抗折强度、收缩率等性能确定路面修补材料的基准配合比为:矿渣掺量90%、水玻璃15%、水胶比为0.4、水泥掺量10%。试验研究掺合料对路面修补材料的流动度、抗压抗折强度、收缩率等性能的影响,结合微观分析发现,适当掺量掺合料可以使砂浆的水化产物种类减少,总数量增加,路面修补材料的性能提高,发现硅灰掺量为10%时,砂浆的各方面性能满足路面修补材料的要求。试验研究纤维的长度和掺量对路面修补材料各方面性能的影响,结合SEM分析发现,12mm玄武岩纤维掺量为0.2%;纤维掺量为0.3%(玄武岩纤维0.2%、聚丙烯纤维1%)时,砂浆的各方面性能满足路面修补材料的要求。通过聚合物改性砂浆性能的研究发现,环氧树脂可以提高路面修补材料的抗折强度和抗硫酸盐腐蚀能力,环氧树脂掺量为9%时,满足路面修补材料的性能要求。综合路面修补材料的绿色经济环保性以及性能要求,确定路面修补材料的最终配合比为:矿渣掺量90%、水泥掺量10%、水玻璃15%、水胶比为0.4、12mm聚丙烯纤维0.1%、12mm玄武岩纤维0.2%。
[Abstract]:Cement concrete pavement is a kind of high-grade pavement with high rigidity, large bearing capacity and good stability. With the increase of traffic volume, environmental pollution is becoming more and more serious, cement concrete pavement is more prone to local damage, if not repaired in time, will cause greater economic losses. At present, the cost of pavement repair materials is high, and can not achieve economic and green environment. The main purpose of this paper is to study the cement concrete pavement repair material which is economical, green and environmental protection. Using industrial waste residue as the main raw material, the performance of the pavement repair material can be improved by admixture, fiber and polymer. In order to meet the requirements of compatibility, workability, durability, shrinkage and adhesion of pavement repair materials, the microstructure of mortar was analyzed by infrared spectrum, X-ray diffraction and SEM. The results show that the basic mix ratio of pavement repair material is determined by experimental study of mortar mobility, compressive strength and shrinkage. The ratio of slag to cement is 90%, water glass 15%, water binder ratio 0.4, cement content 10%. The effect of admixture on the flowability, compressive strength and shrinkage of pavement repair material is studied experimentally. It is found that the suitable amount of admixture can reduce the kinds of hydration products and increase the total quantity of mortar. The performance of pavement repair material is improved. It is found that when the content of silica fume is 10%, the properties of mortar can meet the requirements of pavement repair material. The effects of fiber length and fiber content on the properties of pavement repair materials were studied. Combined with SEM analysis, it was found that the content of 12mm basalt fiber was 0.2. When the fiber content is 0.3% (basalt fiber 0.2% polypropylene fiber 1%) the properties of mortar meet the requirements of pavement repair material. It is found that epoxy resin can improve the flexural strength and sulphate corrosion resistance of pavement repair materials through the study of polymer modified mortar properties. When the epoxy resin content is 9, it can meet the performance requirements of pavement repair materials. According to the green, economic, environmental protection and performance requirements of pavement repair materials, the final mix ratio of pavement repair materials is determined as follows: slag 90, cement 10, water glass 15, water / binder 0. 412 mm polypropylene fiber 0.1. 12mm basalt fiber 0.2.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414;U418.6

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