【摘要】：水泥混凝土路面是一種剛性大、承載力大、穩(wěn)定性好的高級(jí)路面。隨著交通量的增加,環(huán)境污染日益嚴(yán)重,水泥混凝土路面更容易出現(xiàn)局部損壞,若不及時(shí)修補(bǔ),會(huì)造成更大的經(jīng)濟(jì)損失。目前存在的路面修補(bǔ)材料成本高,不能做到經(jīng)濟(jì)綠色環(huán)保。本文的主要目的是研究出經(jīng)濟(jì)綠色環(huán)保的水泥混凝土路面修補(bǔ)材料,采用工業(yè)廢渣為主要原料,通過摻合料、纖維和聚合物改善路面修補(bǔ)材料的性能,從而達(dá)到路面修補(bǔ)材料的相容性、工作性、耐久性、收縮率、粘接性的要求,并利用紅外光譜、X射線衍射、SEM對(duì)砂漿的微觀結(jié)構(gòu)進(jìn)行分析。研究結(jié)果表明:通過試驗(yàn)研究砂漿的流動(dòng)度、抗壓抗折強(qiáng)度、收縮率等性能確定路面修補(bǔ)材料的基準(zhǔn)配合比為:礦渣摻量90%、水玻璃15%、水膠比為0.4、水泥摻量10%。試驗(yàn)研究摻合料對(duì)路面修補(bǔ)材料的流動(dòng)度、抗壓抗折強(qiáng)度、收縮率等性能的影響,結(jié)合微觀分析發(fā)現(xiàn),適當(dāng)摻量摻合料可以使砂漿的水化產(chǎn)物種類減少,總數(shù)量增加,路面修補(bǔ)材料的性能提高,發(fā)現(xiàn)硅灰摻量為10%時(shí),砂漿的各方面性能滿足路面修補(bǔ)材料的要求。試驗(yàn)研究纖維的長度和摻量對(duì)路面修補(bǔ)材料各方面性能的影響,結(jié)合SEM分析發(fā)現(xiàn),12mm玄武巖纖維摻量為0.2%;纖維摻量為0.3%(玄武巖纖維0.2%、聚丙烯纖維1%)時(shí),砂漿的各方面性能滿足路面修補(bǔ)材料的要求。通過聚合物改性砂漿性能的研究發(fā)現(xiàn),環(huán)氧樹脂可以提高路面修補(bǔ)材料的抗折強(qiáng)度和抗硫酸鹽腐蝕能力,環(huán)氧樹脂摻量為9%時(shí),滿足路面修補(bǔ)材料的性能要求。綜合路面修補(bǔ)材料的綠色經(jīng)濟(jì)環(huán)保性以及性能要求,確定路面修補(bǔ)材料的最終配合比為:礦渣摻量90%、水泥摻量10%、水玻璃15%、水膠比為0.4、12mm聚丙烯纖維0.1%、12mm玄武巖纖維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.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U414;U418.6

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