瀝青混凝土路面裂縫灌漿材料性能與工藝研究
發(fā)布時(shí)間：2018-09-05 12:37
【摘要】：裂縫是瀝青路面常見病害之一,傳統(tǒng)的瀝青路面修補(bǔ)方法多為表面填封,失效率較高,因此,開展瀝青路面裂縫灌漿材料技術(shù)與工藝研究對(duì)于提高路面使用壽命,降低路面維修養(yǎng)護(hù)成本具有重要意義。 本文通過研究不同PU(聚氨酯預(yù)聚體)摻量下EA/PU IPN灌漿材料的基本性能以及灌漿材料與瀝青混凝土組合體系與瀝青混凝土之間的性能對(duì)比,評(píng)價(jià)灌漿材料的修補(bǔ)效果；通過研究傳統(tǒng)的瀝青路面裂縫修補(bǔ)方法,結(jié)合灌漿材料性能特點(diǎn),提出一套更為有效的瀝青路面裂縫修補(bǔ)施工工藝。主要研究內(nèi)容如下： (1)通過調(diào)節(jié)EA/PU IPN灌漿材料中的PU摻量(10%-60%),考察灌漿材料的基本性能。研究結(jié)果表明： 當(dāng)PU摻量為30%-60%時(shí),灌漿材料性能較符合瀝青混凝土修補(bǔ)用。此時(shí)灌漿材料韌性較好,斷裂伸長率在30%-40%左右,也同時(shí)強(qiáng)度也較高,體積收縮率較小,大約為3%。 (2)通過調(diào)節(jié)EA/PU IPN灌漿材料中的PU摻量(30%-60%),考察灌漿材料與瀝青混凝土組合體系的變形協(xié)調(diào)性和粘結(jié)性。研究結(jié)果表明： 剪切試驗(yàn)中,隨著PU摻量的增加,組合體系剪切強(qiáng)度總體呈上升趨勢；當(dāng)PU摻量較低時(shí),隨著裂縫寬度的增加,組合體系剪切強(qiáng)度呈上升趨勢；當(dāng)PU摻量較高時(shí),隨著裂縫寬度的增加,組合體系剪切強(qiáng)度先下降后上升；裂縫寬度對(duì)于剪切強(qiáng)度的影響較小。 磨耗試驗(yàn)中,隨著PU摻量的增加,組合體系質(zhì)量曲線逐漸向原試件質(zhì)量曲線靠近。裂縫寬度對(duì)于磨耗試驗(yàn)的影響較小。 劈裂抗拉試驗(yàn)中,隨著PU摻量的增加,組合體系劈裂抗拉強(qiáng)度呈上升趨勢,且趨近于原試件的劈裂抗拉強(qiáng)度；組合體系破壞勁度模量呈上升趨勢,且趨近于原試件的破壞勁度模量；組合體系應(yīng)力應(yīng)變曲線趨近于原試件應(yīng)力應(yīng)變曲線。 當(dāng)PU摻量為50%和60%時(shí),灌漿材料具有較好的粘結(jié)性,并且和瀝青混凝土之間具有較好的變形協(xié)調(diào)性。 (3)結(jié)合所研究的灌漿材料的性能,改進(jìn)了傳統(tǒng)的施工工藝,使之更為有效,提高了施工效率。
[Abstract]:Crack is one of the common diseases of asphalt pavement. The traditional repair method of asphalt pavement is surface sealing, and the failure rate is high. Therefore, the research of asphalt pavement crack grouting material technology and technology can improve the service life of asphalt pavement. It is of great significance to reduce the cost of pavement maintenance and maintenance. In this paper, the basic properties of EA/PU IPN grouting materials under different PU (polyurethane prepolymer) content and the performance comparison between grouting materials and asphalt concrete composite systems and asphalt concrete are studied to evaluate the repair effect of grouting materials. By studying the traditional asphalt pavement crack repair method and combining the characteristics of grouting material, a more effective construction technology of asphalt pavement crack repair is put forward. The main contents are as follows: (1) the basic properties of EA/PU IPN grouting materials were investigated by adjusting the PU content (10- 60%). The results show that when the content of PU is 30%-60%, the performance of grouting material is better than that of asphalt concrete repair. At the same time, the toughness of the grouting material is better, the elongation at break is about 30-40%, the strength is also higher, and the volume shrinkage is smaller. (2) by adjusting the content of PU in EA/PU IPN grouting material (30-60%), the deformation compatibility and adhesion of the composite system of grouting material and asphalt concrete are investigated. The results show that the shear strength of composite system increases with the increase of PU content in shear test, and the shear strength of composite system increases with the increase of crack width when the content of PU is low. When the content of PU is high, the shear strength of composite system decreases first and then increases with the increase of crack width, and the influence of crack width on shear strength is small. In the wear test, with the increase of PU content, the mass curve of the composite system is closer to that of the original specimen. The crack width has little effect on the wear test. In the splitting tensile test, with the increase of PU content, the splitting tensile strength of the composite system tends to increase, which is close to the splitting tensile strength of the original specimen, and the modulus of failure stiffness of the composite system shows an upward trend, and the tensile strength of the composite system increases with the increase of the content of PU. The stress-strain curve of the composite system is closer to the stress-strain curve of the original specimen. When the content of PU is 50% and 60%, the grouting material has better adhesion and better deformation compatibility with asphalt concrete. (3) the traditional construction technology is improved by combining the performance of the grouting material studied. Make it more effective, improve the construction efficiency.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U414;U416.2
本文編號(hào)：2224298
[Abstract]:Crack is one of the common diseases of asphalt pavement. The traditional repair method of asphalt pavement is surface sealing, and the failure rate is high. Therefore, the research of asphalt pavement crack grouting material technology and technology can improve the service life of asphalt pavement. It is of great significance to reduce the cost of pavement maintenance and maintenance. In this paper, the basic properties of EA/PU IPN grouting materials under different PU (polyurethane prepolymer) content and the performance comparison between grouting materials and asphalt concrete composite systems and asphalt concrete are studied to evaluate the repair effect of grouting materials. By studying the traditional asphalt pavement crack repair method and combining the characteristics of grouting material, a more effective construction technology of asphalt pavement crack repair is put forward. The main contents are as follows: (1) the basic properties of EA/PU IPN grouting materials were investigated by adjusting the PU content (10- 60%). The results show that when the content of PU is 30%-60%, the performance of grouting material is better than that of asphalt concrete repair. At the same time, the toughness of the grouting material is better, the elongation at break is about 30-40%, the strength is also higher, and the volume shrinkage is smaller. (2) by adjusting the content of PU in EA/PU IPN grouting material (30-60%), the deformation compatibility and adhesion of the composite system of grouting material and asphalt concrete are investigated. The results show that the shear strength of composite system increases with the increase of PU content in shear test, and the shear strength of composite system increases with the increase of crack width when the content of PU is low. When the content of PU is high, the shear strength of composite system decreases first and then increases with the increase of crack width, and the influence of crack width on shear strength is small. In the wear test, with the increase of PU content, the mass curve of the composite system is closer to that of the original specimen. The crack width has little effect on the wear test. In the splitting tensile test, with the increase of PU content, the splitting tensile strength of the composite system tends to increase, which is close to the splitting tensile strength of the original specimen, and the modulus of failure stiffness of the composite system shows an upward trend, and the tensile strength of the composite system increases with the increase of the content of PU. The stress-strain curve of the composite system is closer to the stress-strain curve of the original specimen. When the content of PU is 50% and 60%, the grouting material has better adhesion and better deformation compatibility with asphalt concrete. (3) the traditional construction technology is improved by combining the performance of the grouting material studied. Make it more effective, improve the construction efficiency.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U414;U416.2
【參考文獻(xiàn)】
相關(guān)期刊論文 前2條
1 郝巨濤;;國內(nèi)瀝青混凝土防滲技術(shù)發(fā)展中的重要問題[J];水利學(xué)報(bào);2008年10期
2 蔣紅梅，袁宏，，高保嬌,王久芬;環(huán)氧-聚氨酯互穿聚合物網(wǎng)絡(luò)導(dǎo)電涂料[J];涂料工業(yè);1999年03期
本文編號(hào)：2224298
本文鏈接：http://sikaile.net/kejilunwen/jiaotonggongchenglunwen/2224298.html
最近更新
教材專著
