水泥对冷拌SMA-5沥青混合料路用性能的影响分析
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摘要
为了研究水泥用量对冷拌SMA-5沥青混合料路用性能的影响,通过可拌和时间试验、粘聚力试验、马歇尔强度试验、无侧限抗压强度试验及劈裂试验,分别探讨了水泥对冷拌SMA-5沥青混合料的可拌和时间、成型速度、水稳定性及高低温性能的影响规律。研究结果得出水泥掺量不大于2%时,冷拌SMA-5能满足拌和时间要求;当水泥用量达到2. 0%时,混合料30 min和60 min的粘结力分别为1. 3 N·m和2. 1 N·m,养生期为7 d、水泥掺量为2%时,冷拌SMA-5沥青混合料冻融劈裂强度比大于75%,满足规范要求;就高温性能而言,当水泥掺量为1%时,动稳定度超过2 000次/mm,能够满足路面使用需求,冷拌SMA-5沥青混合料的弯拉应变随着水泥掺量的增加出现先增大后降低的趋势,但掺量为2%时,低温劲度模量最大,因此,水泥用量不宜超过2%时SMA-5路用性能最佳。
In order to study the influence of cement content on pavement performance of cold-mix sma-5 asphalt mixture,the effects of cement on the mixable time,forming speed,water stability and high and low temperature performance of cold-mix SMA-5 asphalt mixture were investigated by mixing time test,cohesion test,Marshall strength test,unconfined compressive strength test and splitting test.The results showed that when the cement content was no more than 2%,cold mixing SMA-5 could meet the mixing time requirements.When the cement content reaches 2.0%,the adhesive forces for 30 min and 60 min of the mixture are 1.3 n·m and 2.1 n·m respectively.When the health maintenance period is 7 d and the cement content is 2%,the freeze-thaw split strength ratio of the cold-mixed SMA-5 asphalt mixture is greater than 75%,which meets the requirements of the specification.In terms of high-temperature performance,when the cement content is 1%,the dynamic stability is over 2000 times/mm,which can meet the pavement service demand.The bending strain of cold mixed SMA-5 asphalt mixture increases first and then decreases with the increase of cement content.However,when the content is 2%,the stiffness modulus at low temperature is the largest.Generally speaking,cement content should not exceed 2%.
In order to study the influence of cement content on pavement performance of cold-mix sma-5 asphalt mixture,the effects of cement on the mixable time,forming speed,water stability and high and low temperature performance of cold-mix SMA-5 asphalt mixture were investigated by mixing time test,cohesion test,Marshall strength test,unconfined compressive strength test and splitting test.The results showed that when the cement content was no more than 2%,cold mixing SMA-5 could meet the mixing time requirements.When the cement content reaches 2.0%,the adhesive forces for 30 min and 60 min of the mixture are 1.3 n·m and 2.1 n·m respectively.When the health maintenance period is 7 d and the cement content is 2%,the freeze-thaw split strength ratio of the cold-mixed SMA-5 asphalt mixture is greater than 75%,which meets the requirements of the specification.In terms of high-temperature performance,when the cement content is 1%,the dynamic stability is over 2000 times/mm,which can meet the pavement service demand.The bending strain of cold mixed SMA-5 asphalt mixture increases first and then decreases with the increase of cement content.However,when the content is 2%,the stiffness modulus at low temperature is the largest.Generally speaking,cement content should not exceed 2%.
引文
[1]孙宝生.细粒式超薄SMA-5在高速公路养护维修工程中的应用研究[D].西安:西安建筑科技大学,2011.SUN Baosheng.The research on the application of the fine-grained ultra-slim sma-5 in the highway maintenance[D].Xi'an:Xi'an University of Architecture and Technology,2011.
[2]霍晓东.细粒式超薄SMA-5级配组成和路用性能研究[D].西安:长安大学,2005.HUO Xiaodong.Application study on the ultra-thin SMA-5 gradation design and pavement performance[D].Xi'an:Chang'an University,2005.
[3]张震.小粒径SMA-5组成设计及性能研究[D].济南:山东大学,2015.ZHANG Zhen.Research on performance and proportion design of SMA-5[D].Jinan:Shandong University,2015.
[4]薛国强.超薄磨耗层SMA-5沥青混合料的设计及性能研究[J].公路交通科技,2009(26):19-21.XUE Guoqiang.Study on design method and road performances of ultra-thin wearing course SMA-5 asphalt mixture[J].Journal of Highway and Transportation Research and Development,2009(26):19-21.
[5]林荔萍.超薄磨耗层SMA-5沥青混合料在辽宁新铁高速公路上的应用[J].山东交通科技,2013(3):9-12.LIN Liping.Application of ultra-thin wearing course SMA-5 on Liaoning Xintie expressway road[J].Shandong Transportation Technology,2013(3):9-12.
[6]武建民,王国清,聂筱力,等.SMA-5在京秦高速廊坊段罩面工程中的应用[J].交通标准化,2009(9):191-195.WU Jianming,WANG Guoqing,NIE Xiaoli.Application of SMA-5 for thin overlays in Langfang sector of Beijing-Qinhuangdao expressway[J].Communications Standardization,2009(9):191-195.
[7]陈华鑫,徐鹏,刚增军,等.美国超薄罩面混合料SMA-5在抗滑磨耗层中的应用[J].华东公路,2009(176):38-41.CHEN Huaxin,XU Peng,GANG Zengjun.Application of SMA-5 an American ultrathin coating mixture in anti-slip abrasion layer[J].East Road,2009(176):38-41.
[8]杨彪,刘焰.SMA沥青混凝土路面材料荷载行为模式研究[J].公路交通技术,2015(3):17-21.YANG Biao,LIU Yan.Research on load behavior patterns of SMA asphalt concrete pavement materials[J].Technology of Highway and Transport,2015(3):17-21.
[9]王辉.SMA-13沥青路面抗滑表层抗滑性能分形评价方法研究[J].公路交通技术,2018,34(2):28-31.WANG Hui.Fractal evaluation of anti-skid effect of anti-skid surface on SMA-13 asphalt pavement[J].Technology of Highway and Transport,2018,34(2):28-31.
[10]张来栋,肖鑫厚.水泥对微表处混合料路用性能影响及其机理研究[J].硅酸盐通报,2013(5):974-977.ZHANG Laidong,XIAO Xinhou.Effect of cement on the pavement performance of micro-surfacing mixture and its mechanism research[J].Bulletin of the Chinese Ceramic Society,2013(5):974-977.
[11]蒋玮,肖晶晶,王振军.水泥对微表处混合料路用性能影响规律及作用机理研究[J].武汉理工大学学报,2012(2):2-5.JIANG Wei,XIAO Jingjing,WANG Zhenjun.Influence law of cement on the performance of micro surfacing mixture and its mechanism[J].Journal of Wuhan University of Technology,2012(2):2-5.
[12]尚志刚.水泥对微表处路用性能影响的研究[J].城市道桥与防洪,2017(3):196-198.SHANG Zhigang.Study of cement influence on pavement performance of micro surface[J].Urban Roads and Bridges and Flood Control,2017(3):196-198.
[13]钱俊懿.冷拌超薄罩面沥青混合料性能研究[D].武汉:武汉轻工大学,2016.QIAN Junyi.A study on pavement performance of cold mix ultrathin asphalt mixture[D].Wuhan:Wuhan University of Light Industry,2016.
[14]叶茂.冷拌超薄沥青混合料早期强度的改善技术研究[D].武汉:武汉工程大学,2017.YE Mao.Early Strength improving technology of ultra-thin cold asphalt mixture[D].Wuhan:Wuhan University of Engineering,2017.
[15]粟多品,杨斌,李伟,等.低温下微表处施工关键技术[J].公路交通技术,2007(4):55-57.SU Duopin,YANG Bin,LI Wei,et al.Know-how in low temperature micro-surface-treatment construction[J].Technology of Highway and Transport,2007(4):55-57.
[2]霍晓东.细粒式超薄SMA-5级配组成和路用性能研究[D].西安:长安大学,2005.HUO Xiaodong.Application study on the ultra-thin SMA-5 gradation design and pavement performance[D].Xi'an:Chang'an University,2005.
[3]张震.小粒径SMA-5组成设计及性能研究[D].济南:山东大学,2015.ZHANG Zhen.Research on performance and proportion design of SMA-5[D].Jinan:Shandong University,2015.
[4]薛国强.超薄磨耗层SMA-5沥青混合料的设计及性能研究[J].公路交通科技,2009(26):19-21.XUE Guoqiang.Study on design method and road performances of ultra-thin wearing course SMA-5 asphalt mixture[J].Journal of Highway and Transportation Research and Development,2009(26):19-21.
[5]林荔萍.超薄磨耗层SMA-5沥青混合料在辽宁新铁高速公路上的应用[J].山东交通科技,2013(3):9-12.LIN Liping.Application of ultra-thin wearing course SMA-5 on Liaoning Xintie expressway road[J].Shandong Transportation Technology,2013(3):9-12.
[6]武建民,王国清,聂筱力,等.SMA-5在京秦高速廊坊段罩面工程中的应用[J].交通标准化,2009(9):191-195.WU Jianming,WANG Guoqing,NIE Xiaoli.Application of SMA-5 for thin overlays in Langfang sector of Beijing-Qinhuangdao expressway[J].Communications Standardization,2009(9):191-195.
[7]陈华鑫,徐鹏,刚增军,等.美国超薄罩面混合料SMA-5在抗滑磨耗层中的应用[J].华东公路,2009(176):38-41.CHEN Huaxin,XU Peng,GANG Zengjun.Application of SMA-5 an American ultrathin coating mixture in anti-slip abrasion layer[J].East Road,2009(176):38-41.
[8]杨彪,刘焰.SMA沥青混凝土路面材料荷载行为模式研究[J].公路交通技术,2015(3):17-21.YANG Biao,LIU Yan.Research on load behavior patterns of SMA asphalt concrete pavement materials[J].Technology of Highway and Transport,2015(3):17-21.
[9]王辉.SMA-13沥青路面抗滑表层抗滑性能分形评价方法研究[J].公路交通技术,2018,34(2):28-31.WANG Hui.Fractal evaluation of anti-skid effect of anti-skid surface on SMA-13 asphalt pavement[J].Technology of Highway and Transport,2018,34(2):28-31.
[10]张来栋,肖鑫厚.水泥对微表处混合料路用性能影响及其机理研究[J].硅酸盐通报,2013(5):974-977.ZHANG Laidong,XIAO Xinhou.Effect of cement on the pavement performance of micro-surfacing mixture and its mechanism research[J].Bulletin of the Chinese Ceramic Society,2013(5):974-977.
[11]蒋玮,肖晶晶,王振军.水泥对微表处混合料路用性能影响规律及作用机理研究[J].武汉理工大学学报,2012(2):2-5.JIANG Wei,XIAO Jingjing,WANG Zhenjun.Influence law of cement on the performance of micro surfacing mixture and its mechanism[J].Journal of Wuhan University of Technology,2012(2):2-5.
[12]尚志刚.水泥对微表处路用性能影响的研究[J].城市道桥与防洪,2017(3):196-198.SHANG Zhigang.Study of cement influence on pavement performance of micro surface[J].Urban Roads and Bridges and Flood Control,2017(3):196-198.
[13]钱俊懿.冷拌超薄罩面沥青混合料性能研究[D].武汉:武汉轻工大学,2016.QIAN Junyi.A study on pavement performance of cold mix ultrathin asphalt mixture[D].Wuhan:Wuhan University of Light Industry,2016.
[14]叶茂.冷拌超薄沥青混合料早期强度的改善技术研究[D].武汉:武汉工程大学,2017.YE Mao.Early Strength improving technology of ultra-thin cold asphalt mixture[D].Wuhan:Wuhan University of Engineering,2017.
[15]粟多品,杨斌,李伟,等.低温下微表处施工关键技术[J].公路交通技术,2007(4):55-57.SU Duopin,YANG Bin,LI Wei,et al.Know-how in low temperature micro-surface-treatment construction[J].Technology of Highway and Transport,2007(4):55-57.