生物沥青及岩沥青复合改性沥青使用性能
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摘要
为研究生物沥青及岩沥青复合改性沥青结合料使用性能,在60%范围内对不同掺量(质量)生物沥青及岩沥青复合改性沥青进行针入度、软化点、延度、黏度和RTFO短期老化试验,考察基质沥青在生物沥青和岩沥青复合改性作用下各性能的变化.试验结果与分析表明:在保持生物沥青及岩沥青复合改性沥青结合料与对照组基质沥青结合料的25℃针入度一致时,岩沥青与生物沥青的比值和复合改性剂的掺量变化成正比例关系;复合改性沥青针入度指数PI值增大,温度敏感性得到改善;复合改性沥青的高温性能先略有降低而后一直提升,复合改性剂掺量约为15%时达到对照组基质沥青水平;复合改性沥青RTFO后残留针入度比先略有减小而后一直增大,复合改性剂掺量约为20%时达到对照组基质沥青水平,软化点变化提升明显;然而,沥青的延度随着复合改性剂的掺入而大幅降低,但沥青混合料弯曲试验对低温性能的验证显示,复合改性剂的掺量不超过30%时,复合改性剂的掺入不会降低沥青的低温性能,反而有一定改善.综上所述,在20%～30%掺量范围内,将复合改性剂替代部分石油沥青不会降低沥青的各类性能,甚至均有一定提高,且适应不同性能要求时掺量范围上限或下限可适当放宽.
This paper studied the performance of bio-asphalt and rock asphalt composite modified asphalt binder.To investigate the change of the properties of asphalt subjected to the composite modification of bio-asphalt and rock asphalt,tests on the penetration,softening point,ductility,viscosity and RTFO short-term aging of the bioasphalt and rock asphalt composite modified asphalt binder with different content in the range of 60% were carried out.The test results and analysis indicate that when the 25℃ penetration of bio-asphalt and rock asphalt composite modified asphalt is consistent with the base asphalt binder,the ratio of rock asphalt to bio-asphalt are proportional to the content of composite modifier;The penetration index PI value of composite modified asphalt binder increases and the temperature sensitivity improves. The high temperature performance of composite modified asphalt decreases slightly first and then increases,and reaches its original level when the content of composite modifier is about 15%;The retained penetration of composite modified asphalt after RTFO decreases slightly first and then increases always,and finally reaches its original level when the content of composite modifier is about 20%,and the change of softening point increases obviously;However,the ductility of asphalt decreases significantly with the addition of the composite modifier. However, the bending test of asphalt mixture demonstrates that the addition of composite modifier does not decrease the low temperature performance of asphalt and improves it to some extent. In a whole,within the content from 20% to 30%, replacing some petroleum asphalt with compound modifier improves the performance of asphalt. Furthermore, the upper or lower content limit can be broadened appropriately when different performance requirements are to be met.
This paper studied the performance of bio-asphalt and rock asphalt composite modified asphalt binder.To investigate the change of the properties of asphalt subjected to the composite modification of bio-asphalt and rock asphalt,tests on the penetration,softening point,ductility,viscosity and RTFO short-term aging of the bioasphalt and rock asphalt composite modified asphalt binder with different content in the range of 60% were carried out.The test results and analysis indicate that when the 25℃ penetration of bio-asphalt and rock asphalt composite modified asphalt is consistent with the base asphalt binder,the ratio of rock asphalt to bio-asphalt are proportional to the content of composite modifier;The penetration index PI value of composite modified asphalt binder increases and the temperature sensitivity improves. The high temperature performance of composite modified asphalt decreases slightly first and then increases,and reaches its original level when the content of composite modifier is about 15%;The retained penetration of composite modified asphalt after RTFO decreases slightly first and then increases always,and finally reaches its original level when the content of composite modifier is about 20%,and the change of softening point increases obviously;However,the ductility of asphalt decreases significantly with the addition of the composite modifier. However, the bending test of asphalt mixture demonstrates that the addition of composite modifier does not decrease the low temperature performance of asphalt and improves it to some extent. In a whole,within the content from 20% to 30%, replacing some petroleum asphalt with compound modifier improves the performance of asphalt. Furthermore, the upper or lower content limit can be broadened appropriately when different performance requirements are to be met.
引文
[1]潘浩志.生物沥青改性沥青结合料使用性能研究[D].长沙:湖南大学土木工程学院,2016:1—3.PAN H Z.Evaluating performance of bio-asphalt modified asphalt binder[D].Changsha:College of Civil Engineering,Hunan University,2016:1—3.(In Chinese)
[2]曾梦澜,田伟,朱艳贵,等.蓖麻油生物调和沥青混合料使用性能研究[J].湖南大学学报(自然科学版),2017,44(11):177—182.ZENG M L,TIAN W,ZHU Y G,et al.Study on performance of castor oil-based bioasphalt blended asphalt mixture[J].Journal of Hunan University(Natural Sciences),2017,44(11):177—182.(In Chinese)
[3]汪海年,高俊锋,赵欣,等.基于DSR和RV的生物沥青结合料流变特性研究[J].湖南大学学报(自然科学版),2015,42(6):26—33.WANG H N,GAO J F,ZHAO X,et al.Rheological properties on bio-binder based on DSR and RV[J].Joumal of Hunan University(Natural Sciences),2015,42(6):26—33.(In Chinese)
[4]曾梦澜,潘浩志,田振,等.老化对生物沥青改性沥青结合料使用性能的影响[J].公路工程,2016,41(2):28—32.ZENG M L,PAN H Z,TIAN Z,et al.Aging effects on performance of asphalt binder modified with bio-asphalt[J]. Highway Engineering,2016,41(2):28—32.(In Chinese)
[5]曾梦澜,赵宇,潘浩志,等.欧洲岩沥青改性沥青结合料使用性能试验研究[J].湖南大学学报(自然科学版),2016,43(5):125—130.ZENG M L,ZHAO Y,PAN H Z,et al.An experimental study on performance of European rock asphalt modified asphalt binder[J].Journal of Hunan University(Natural Sciences),2016,43(5):125—130.(In Chinese)
[6]JTG F40—2004公路沥青路面施工技术规范[S].北京:人民交通出版社,2004:8—31.JTG F40—2004 Technical specifications for construction of highway asphalt pavements[S].Beijing:China Communications Press,2004:8—31.(In Chinese)
[7]JT/T860.5—2014沥青混合料改性添加剂第5部分:天然沥青[S].北京:人民交通出版社,2014:1—2.JT/T 860.5—2014 Modifier for asphalt mixture-part5:natural asphalt[S]. Beijing:China Communications Press,2014:1—2.(In Chinese)
[8]陈俊,黄晓明.沥青黏度和稠度本质及其关系研究[J].石油沥青,2007,21(4):40—44.CHEN J,HUANG X M.Study on hypostasis and relationship of asphalt viscosity and consistency[j].Petroleum Asphalt,2007,21(4):40—44.(In Chinese)
[9]JTG E20—2011公路工程沥青及沥青混合料试验规程[S].北京:人民交通出版社,2011:186-301.JTG E20—2011 Standard test methods of bitumen and bituminous mixtures for highway engineering[S].Beijing:China Communications Press,2011:186—301.(In Chinese)
[10]沈金安,李福普.评价沥青质量的核心指标一沥青感温性[J].石油沥青,1997,11(2):12—22.SHEN J A,LI F P.The nucleus quota of asphalt quality:asphalt temperature susceptibility[J].Petroleum Asphalt,1997,11(2):12—22.(In Chinese)
[11]沈金安.沥青及沥青混合料路用性能[M].北京:人民交通出版社,2001:80-102.SHEN J A.Performance of asphalt and asphalt mixture[M].Beijing:China Communications Press,2001:80—102.
[12]张肖宁.沥青与沥青混合料的黏弹力学原理及应用[M].北京:人民交通出版社,2006:188—196.ZHANG X N.Viscoelastic mechanical principle and application of asphalt and asphalt mixture[J]. Beijing:China Communications Press,2006:188—196.
[13]YILMAZ M,CELOGLU M E.Effects of SBS and different natural asphalts on the properties of bituminous binders and mixtures[J].Construction and Building Materials,2013,44(3):533—540.
[14]AMERI M,MANSOURIAN A,ASHANI S S,et al.Technical study on the Iranian Gilsonite as an additive for modification of asphalt binders used in pavement construction[J]. Construction and Building Materials,2010,25(3):1379—1387.
[15]KOK B V,YILMAZ M,GULER M.Evaluation of high temperature performance of SBS+Gilsonite modified binder[J].Fuel,2011,90(10):3093—3099.
[2]曾梦澜,田伟,朱艳贵,等.蓖麻油生物调和沥青混合料使用性能研究[J].湖南大学学报(自然科学版),2017,44(11):177—182.ZENG M L,TIAN W,ZHU Y G,et al.Study on performance of castor oil-based bioasphalt blended asphalt mixture[J].Journal of Hunan University(Natural Sciences),2017,44(11):177—182.(In Chinese)
[3]汪海年,高俊锋,赵欣,等.基于DSR和RV的生物沥青结合料流变特性研究[J].湖南大学学报(自然科学版),2015,42(6):26—33.WANG H N,GAO J F,ZHAO X,et al.Rheological properties on bio-binder based on DSR and RV[J].Joumal of Hunan University(Natural Sciences),2015,42(6):26—33.(In Chinese)
[4]曾梦澜,潘浩志,田振,等.老化对生物沥青改性沥青结合料使用性能的影响[J].公路工程,2016,41(2):28—32.ZENG M L,PAN H Z,TIAN Z,et al.Aging effects on performance of asphalt binder modified with bio-asphalt[J]. Highway Engineering,2016,41(2):28—32.(In Chinese)
[5]曾梦澜,赵宇,潘浩志,等.欧洲岩沥青改性沥青结合料使用性能试验研究[J].湖南大学学报(自然科学版),2016,43(5):125—130.ZENG M L,ZHAO Y,PAN H Z,et al.An experimental study on performance of European rock asphalt modified asphalt binder[J].Journal of Hunan University(Natural Sciences),2016,43(5):125—130.(In Chinese)
[6]JTG F40—2004公路沥青路面施工技术规范[S].北京:人民交通出版社,2004:8—31.JTG F40—2004 Technical specifications for construction of highway asphalt pavements[S].Beijing:China Communications Press,2004:8—31.(In Chinese)
[7]JT/T860.5—2014沥青混合料改性添加剂第5部分:天然沥青[S].北京:人民交通出版社,2014:1—2.JT/T 860.5—2014 Modifier for asphalt mixture-part5:natural asphalt[S]. Beijing:China Communications Press,2014:1—2.(In Chinese)
[8]陈俊,黄晓明.沥青黏度和稠度本质及其关系研究[J].石油沥青,2007,21(4):40—44.CHEN J,HUANG X M.Study on hypostasis and relationship of asphalt viscosity and consistency[j].Petroleum Asphalt,2007,21(4):40—44.(In Chinese)
[9]JTG E20—2011公路工程沥青及沥青混合料试验规程[S].北京:人民交通出版社,2011:186-301.JTG E20—2011 Standard test methods of bitumen and bituminous mixtures for highway engineering[S].Beijing:China Communications Press,2011:186—301.(In Chinese)
[10]沈金安,李福普.评价沥青质量的核心指标一沥青感温性[J].石油沥青,1997,11(2):12—22.SHEN J A,LI F P.The nucleus quota of asphalt quality:asphalt temperature susceptibility[J].Petroleum Asphalt,1997,11(2):12—22.(In Chinese)
[11]沈金安.沥青及沥青混合料路用性能[M].北京:人民交通出版社,2001:80-102.SHEN J A.Performance of asphalt and asphalt mixture[M].Beijing:China Communications Press,2001:80—102.
[12]张肖宁.沥青与沥青混合料的黏弹力学原理及应用[M].北京:人民交通出版社,2006:188—196.ZHANG X N.Viscoelastic mechanical principle and application of asphalt and asphalt mixture[J]. Beijing:China Communications Press,2006:188—196.
[13]YILMAZ M,CELOGLU M E.Effects of SBS and different natural asphalts on the properties of bituminous binders and mixtures[J].Construction and Building Materials,2013,44(3):533—540.
[14]AMERI M,MANSOURIAN A,ASHANI S S,et al.Technical study on the Iranian Gilsonite as an additive for modification of asphalt binders used in pavement construction[J]. Construction and Building Materials,2010,25(3):1379—1387.
[15]KOK B V,YILMAZ M,GULER M.Evaluation of high temperature performance of SBS+Gilsonite modified binder[J].Fuel,2011,90(10):3093—3099.
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