复合改性沥青混合料性能的研究

石墨烯复合橡胶改性沥青SUP-13级配优化设计与路用性能研究赵飞龙1，蔡乾东2，左强1，宋军兴1（1. 甘肃路桥第三公路工程有限责任公司，甘肃兰州730050；2. 陕西东道特种路面科技有限公司，陕西西安712000）摘要：在保证SUP-13级配特征的基础上，参照SMA设计VCA mix⩽VCA DRC骨架判定标准，对不同级配SUP-13石墨烯复合橡胶改性沥青混合料的路用性能进行研究，试验结果表明：连续密级配SUP-13混合料中胶粉存在干涉影响，碾压后出现轻微光面、油膜较多现象，抗车辙及抗滑性能存在明显不足；半间断SUP-13-B、SUP-13-C动稳定度分别提高27.94%、32.17%，抗剪强度分别提高20.18%、28.44%，构造深度分别提高10.42%、14.58%，摩擦系数分别提高11.15%、12.74%，且低温抗裂性及水稳定性略有降低；半间断SUP-13-B的综合路用性能指标相对均衡，兼顾了半间断SUP-13与石墨烯复合橡胶改性沥青组合优势，符合河西走廊西端沥青路面功能需求。

关键词：道路工程；石墨烯复合橡胶改性沥青；SUP-13；半间断级配；路用性能中图分类号：U416.217 文献标识码：A 文章编号：1673-6478（2023）03-0159-06Study on Gradations Optimized Design and Road Performance of GrapheneComposite Rubber Modified Asphalt Mixture SUP-13ZHAO Feilong1, CAI Qiandong2, ZUO Qiang1, SONG Junxing1(1. Gansu Road and Bridge Third Highway Engineering Co., Ltd., Lanzhou Gansu 730050, China; 2. ShaanxiDongdao Special Pavement Technology Co., Ltd., Xi'an, Shaanxi 712000, China)Abstract:based on ensuring the gradation characteristics of SUP-13, and referring to the SMA designed VCA mix⩽VCA DRC skeleton judgment standard, we studied the road performance of different gradation SUP-13 graphene composite rubber modified asphalt mixtures. The test results show that the rubber powder in the continuous dense gradation SUP-13 mixture imposed interference effects, showing slight smooth surface and more oil film after rolling; the anti-rutting and anti-slip performance were significantly insufficient; the dynamic stability of semi gap-graded SUP-13-B and SUP-13-C increased by 27.94% and 32.17%, the shear strength increased by 20.18% and 28.44%, the structural depth increased by 10.42% and 14.58%, the friction coefficient increased by 11.15% and 12.74% respectively, and the low-temperature crack resistance and water stability slightly decreased; the comprehensive road performance indicators of semi gap-graded SUP-13-B are relatively balanced, taking the advantages of the combination of semi gap-graded SUP-13 and graphene composite rubber modified asphalt into consideration, and meeting the functional requirements of asphalt pavement at the western end of the Hexi Corridor.Key words: road engineering; graphene rubber composite modified asphalt; SUP-13; semi gap-graded; road performance收稿日期：2023-04-20作者简介：赵飞龙（1988.10-），男，甘肃榆中人，工程师，从事公路工程建设与管理工作.（）160交通节能与环保第19卷0引言近年来，我国胶粉复合改性沥青工程应用越来越广泛。

SBR 与SBS 复合改性沥青制备及其混合料路用性能研究摘要：本文研究了SBR（丁苯橡胶）与SBS（苯乙烯-丁二烯-苯乙烯）复合改性沥青制备方法和其混合料的路用性能。

以SBR 与SBS 的质量比为1：1，通过熔融混合法制备了SBR/SBS 复合改性沥青，研究了SBS 添加量对复合沥青性质的影响。

在此基础上，制备了不同添加量SBR/SBS 复合改性沥青的混合料，并测试了其抗拉强度、剪切应力、渗水性等路用性能。

通过实验研究发现，随着SBS 添加量的增加，复合沥青的黏度、软化点和负荷剪切模量均有所增加；而渗透性和弹性恢复率则有所降低。

在添加20% SBS 的情况下，SBR/SBS 复合沥青的各项性能最优，混合料也具有较好的路用性能，其抗拉强度、剪切应力和渗水性均有所提高。

本研究结果表明，采用SBR 与SBS 相结合的复合改性方法是可行的，可以显著提高沥青的性能和混合料的路用性能。

因此，SBR/SBS 复合沥青有望作为一种新型材料在路面建设中得到广泛应用。

关键词：SBR/SBS 复合改性沥青；路用性能；混合料IntroductionAsphalt is widely used in road construction due to its excellent performance in providing a smooth and durable road surface. However, traditional asphalt has some shortcomings such as low elasticity, low temperature cracking resistance, and poor waterproofing property. Therefore, improving the performance of asphalt has become a research hotspot in the field of road construction.Many studies have shown that the addition of polymers can improve the performance of asphalt effectively. Among them, styrene- butadiene rubber (SBR) and styrene-butadiene-styrene copolymer (SBS) are two commonly used polymers in asphalt modification. SBR can improve the elasticity and low-temperature resistance of asphalt, whileSBS can enhance the high-temperature stability and waterproofing property of asphalt. Therefore, combining SBR and SBS to modify asphalt is expected to achieve a comprehensive improvement in its performance.In this study, SBR/SBS composite modified asphalt was prepared by melt blending method, and the effect of SBS content on the properties of composite asphalt was investigated. Furthermore, the performance of different SBR/SBS composite modified asphalt mixtures was tested to evaluate their road usage efficiency.ExperimentalMaterials:Asphalt: A pen grade 60/70 asphalt was used as the base material.SBR: A commercial grade SBR with a styrene content of 23% was used.SBS: A commercial grade SBS with a styrene content of 30% was used.Preparation of SBR/SBS composite modified asphalt:SBR and SBS were characterized by their respective melting points to ensure that they were fully melted before being added to the asphalt. Then, SBR and SBS were added to the asphalt at a SBR/SBS mass ratio of 1:1. The mixture was stirred at 170°C for 3 hours until a uniform composite modified asphalt was obtained. The SBS content was adjusted to 10%, 15%, and 20% of the total amount of SBR/SBS to prepare three different composite modified asphalt samples.Performance testing of SBR/SBS composite modified asphalt mixture:The SBR/SBS composite modified asphalt mixture was prepared according to the Marshall method. The mixture was compacted and molded into cylindrical samples with a diameter of 63.5mm and a height of 63.5mm. The samples were then tested for their tensile strength, shear stress, and water permeability according to the relevant standards.Results and discussionEffect of SBS content on composite modified asphalt:The rheological properties of SBR/SBS composite modified asphalt with different SBS contents were analyzed through dynamic shearrheometer tests. The results showed that the addition of SBS could increase the viscosity, softening point, and negative load shear modulus of the composite modified asphalt. With the increase of SBS content, the improvement of these properties becomes more pronounced. Based on this, the optimal SBS content was determined to be 20%.Effect of SBS content on composite modified asphalt mixture:The mechanical properties of the SBR/SBS composite modified asphalt mixture were tested for different SBS contents. The results showed that increasing the SBS content could increase the tensile strength and shear stress of the mixture. However, the water permeability and elastic recovery rate of the mixture decreased with the increase of SBS content. When the SBS content was 20%, the composite modified asphalt mixture had the best road usage performance.ConclusionThe SBR/SBS composite modified asphalt prepared by melt blending method has the potential to significantly improve the performance of asphalt. The addition of SBS can increase the viscosity, softening point, and negative load shear modulus of the composite modified asphalt, while reducing its permeability and elastic recovery rate. With the optimal SBS content of 20%, the SBR/SBS composite modified asphalt mixture obtained exhibited good mechanical properties including improved tensile strength, shear stress, and water permeability.The use of SBR/SBS composite modified asphalt has great potential in road construction, and further research should be conducted to explore its application prospects in this field.。

SBS与天然沥青复合改性性能研究【摘要】sbs改性沥青因为具有良好的高温低温性能，是现在应用较为广泛的一种沥青改性方法；而天然沥青因为具有良好的高温性能，最近几年发展比较快的一种沥青改性技术。

本文通过对sbs 和天然沥青的复合改性来进行研究，通过一系列的试验得到具有良好的高低温性能且具有良好经济效益的配方。

【关键词】sbs；天然沥青；复合改性sbs改性沥青路面具有良好的高低温性能，在应用过程中得到了广大业主的认同，但是因为其价格比普通沥青高20%，因此制约了其在一些资金较为紧张地区的应用。

天然沥青改性沥青路面具有优异的高温性能，但其低温性能较差，冬季低温容易开裂，影响路面寿命。

通过对改性沥青的试验研究，发现sbs与天然沥青共同改性后的改性沥青具有很好的高低温性能，且降低了使用成本。

同时，天然沥青又可以作为一种抗剥落剂，在改性的过程中既起到改善高温性能，又起到增加与矿石粘附性的作用。

sbs是一种高聚物，是苯二烯与丁二烯共聚之后的产品。

天然沥青是石油在自然条件下，经千百万年的时间，在温度、压力、气体、无机物触、微生物及水分的综合作用下氧化聚合而成的沥青类物质。

由于它长年与自然环境共存，所以性质特别稳定。

而天然岩沥青由于产生于岩石裂缝中，所受的压力与温度条件要比其他天然沥青高，故聚合程度很高，分子量也越大，软化点很高。

天然岩沥青的基本性质取决于它的聚合程度和纯净度，即软化点的高低及灰份含量的多少。

一般情况下，软化点越高，其聚合程度越高，平均分子量也越大。

需要指出的是，含含灰份量不同的天然岩沥青不能用软化点的高低比较其性能之优劣，因为灰份也直接影响软化点的高低。

只有含灰份量相同的天然岩沥青才可以用软化点来反映它们的氧化聚合程度，即组成情况。

1.试验仪器、材料1.1试验仪器沥青针入度仪（天津建筑仪器厂）恒温烘箱（大连干燥箱厂）软化点试验仪（北京科学实验仪器厂）恒温水浴箱（无锡市医疗设备厂）延度试验机（北京科学试验仪器厂）电光分析天平（沈阳分析仪器厂）1.2材料山东宏润70#道路重交沥青，sbs，天然岩沥青2.实验步骤根据基质沥青与sbs、天然沥青的特点，采用加热的方法在基质沥青中分别加入不同比例的sbs和天然沥青，并适当加入一些助溶剂共混。

PPA复合改性沥青混合料抗紫外光与热老化性能研究郭洪欣;郭洪杰【摘要】为了提高SBS、SBR聚合物改性沥青混合料的抗热老化和紫外光老化性能,按照室内与高寒高海拔区热、紫外光辐射总量相等的原则进行室内多聚磷酸改性沥青及其混合料模拟老化试验,研究了多聚磷酸(PPA)及多聚磷酸与低剂量聚合物改性沥青抗热老化和紫外光老化性能.结果表明,PPA复合改性沥青的5℃延度随热老化和紫外光老化时间延长而减小,热老化5 h后延度趋于稳定,紫外光老化12 h 后延度趋于稳定;抗车辙因子和软化点随紫外光老化时间延长而增大.随着紫外光老化时间延长,改性沥青混合料的高温性能先提高后降低,低温抗裂、疲劳性能呈下降趋势,PPA对基质沥青和低剂量SBS、SBR改性沥青混合料的抗紫外光老化作用改善效果显著,PPA可作为高紫外光辐射区沥青路面抗老化剂使用.%In order to improve the thermal aging resistance and UV aging properties of SBS and SBR polymer modified asphalt mixture,polyphosphoric acid-modified asphalt and its mixture were mixed according to the principle of equal heat and ultraviolet radiation in indoor and alpine high altitude area. Aging simulation test was conducted to study the thermal aging resistance and UV aging properties of polyphosphoric acid(PPA),polyphosphoric acid and low dose polymer modified asphalt. The results show that the 5 ℃ ductility of PPA composite modified asphalt decreases with the increase of heat aging and UV aging time,and the rutting factor and softening point increase with UV aging time. The ductility of PPA composite modified asphalt In stability,after 12 h UV aging ductility tends to be stable. With the aging of UV light,the high temperature properties of modified asphaltmixture firstly increased and then decreased,and the cracking resistance and fatigue properties at low temperature showed a decreasing trend. PPA had a significant effect on the anti-ultraviolet aging of matrix asphalt and low dose SBS and SBR modified asphalt mixture. PPA can be used as anti-aging agent for asphalt pavement in high ultraviolet radiation area.【期刊名称】《新型建筑材料》【年(卷),期】2018(045)003【总页数】6页(P108-113)【关键词】道路工程;多聚磷酸;多聚磷酸复合改性沥青混合料;热老化;紫外光老化【作者】郭洪欣;郭洪杰【作者单位】呼伦贝尔市公路管理局,内蒙古呼伦贝尔021008;内蒙古呼伦贝尔市公路勘测规划设计有限公司,内蒙古呼伦贝尔021008【正文语种】中文【中图分类】TU5350 引言近年来，以多聚磷酸（PPA）为代表的化学改性剂由于其能够与基质沥青、低剂量聚合物改性沥青、橡胶改性沥青等发生化学反应，具有热储存稳定性好、改性工艺简单、价格低廉，可显著改善沥青混合料的温度敏感性、提高沥青路面对重载交通的适应能力、抗车辙和抗疲劳破坏性能优良等技术优势，化学改性剂PPA及PPA 复合改性沥青混合料越来越受到学术界和工程界道路工作者的重视，PPA改性技术已逐渐被大众所接受[1-3]。

SBS与天然沥青复合改性性能研究【摘要】sbs改性沥青因为具有良好的高温低温性能，是现在应用较为广泛的一种沥青改性方法；而天然沥青因为具有良好的高温性能，最近几年发展比较快的一种沥青改性技术。

本文通过对sbs 和天然沥青的复合改性来进行研究，通过一系列的试验得到具有良好的高低温性能且具有良好经济效益的配方。

【关键词】sbs；天然沥青；复合改性sbs改性沥青路面具有良好的高低温性能，在应用过程中得到了广大业主的认同，但是因为其价格比普通沥青高20%，因此制约了其在一些资金较为紧张地区的应用。

天然沥青改性沥青路面具有优异的高温性能，但其低温性能较差，冬季低温容易开裂，影响路面寿命。

通过对改性沥青的试验研究，发现sbs与天然沥青共同改性后的改性沥青具有很好的高低温性能，且降低了使用成本。

同时，天然沥青又可以作为一种抗剥落剂，在改性的过程中既起到改善高温性能，又起到增加与矿石粘附性的作用。

sbs是一种高聚物，是苯二烯与丁二烯共聚之后的产品。

天然沥青是石油在自然条件下，经千百万年的时间，在温度、压力、气体、无机物触、微生物及水分的综合作用下氧化聚合而成的沥青类物质。

由于它长年与自然环境共存，所以性质特别稳定。

而天然岩沥青由于产生于岩石裂缝中，所受的压力与温度条件要比其他天然沥青高，故聚合程度很高，分子量也越大，软化点很高。

天然岩沥青的基本性质取决于它的聚合程度和纯净度，即软化点的高低及灰份含量的多少。

一般情况下，软化点越高，其聚合程度越高，平均分子量也越大。

需要指出的是，含含灰份量不同的天然岩沥青不能用软化点的高低比较其性能之优劣，因为灰份也直接影响软化点的高低。

只有含灰份量相同的天然岩沥青才可以用软化点来反映它们的氧化聚合程度，即组成情况。

1.试验仪器、材料1.1试验仪器沥青针入度仪（天津建筑仪器厂）恒温烘箱（大连干燥箱厂）软化点试验仪（北京科学实验仪器厂）恒温水浴箱（无锡市医疗设备厂）延度试验机（北京科学试验仪器厂）电光分析天平（沈阳分析仪器厂）1.2材料山东宏润70#道路重交沥青，sbs，天然岩沥青2.实验步骤根据基质沥青与sbs、天然沥青的特点，采用加热的方法在基质沥青中分别加入不同比例的sbs和天然沥青，并适当加入一些助溶剂共混。

河南科技Henan Science and Technology 交通与土木工程总第806期第12期2023年6月复掺纤维AC-13C沥青混合料性能研究薛冰1，2邵景干1，2李文凯1，2孔凌宇1，2王俊超1，2姬小祥2，3（1.河南交院工程技术集团有限公司，河南郑州450046；2.绿色高性能材料应用技术交通运输行业研发中心，河南郑州450046；3河南交通职业技术学院，河南郑州450046）摘要：【目的】为改善沥青路面整体路用性能，选用玄武岩纤维、木质素纤维对AC-13C沥青混合料进行复合改性。

【方法】根据课题组前期的研究成果，确定纤维总掺量为0.4%，并拟定复掺方案。

通过对AC-13C沥青混合料进行配合比设计，确定不同纤维复掺方案下的最佳油石比；通过开展高温抗车辙、低温抗开裂、抗水损害等试验评价复掺纤维AC-13C沥青混合料的路用性能。

【结果】玄武岩纤维与木质素纤维掺配比例为2∶3时，高低温性能最优；掺配比例为3∶2时，混合料水稳定性能最优。

【结论】玄武岩纤维、木质素纤维的掺入能够改善沥青路面的路用性能。

关键词：玄武岩纤维；木质素纤维；矿料级配；路用性能中图分类号：U416.217文献标志码：A文章编号：1003-5168（2023）12-0081-04DOI：10.19968/ki.hnkj.1003-5168.2023.12.015Study on Performance and Benefit of Fiber AC-13C Asphalt MixtureXUE Bing1,2SHAO Jinggan1,2LI Wenkai1,2KONG Lingyu1,2WANG Junchao1,2JI Xiaoxiang2,3(1.Henan Jiaoyuan Engineering Technology Group Co.,Ltd.,Zhengzhou450046,China;2.Research andDevelopment Center of Green High Performance Material Application Technology Transportation Industry, Zhengzhou450046,China;Henan College of Transportation,Zhengzhou450046,China)Abstract:[Purposes]To improve the overall road performance of asphalt pavement,basalt fiber and lig⁃nin fiber were selected for composite modification of AC-13C asphalt mixture.[Methods]Based on the research results of the previous research group,the total fiber content was determined to be0.4%,and a composite blending plan was proposed.By designing the mix proportion of AC-13C asphalt mixture,the optimal asphalt aggregate ratio under different fiber blending schemes were determined;by conducting tests such as high-temperature resistance to rutting,low-temperature resistance to cracking,and water damage,the road performance of composite fiber AC-13C asphalt mixture was evaluated.[Findings] When the ratio of basalt fiber to lignin fiber is2∶3,the high and low temperature performance is optimal, and when the ratio is3∶2,the water stability performance of the mixture is optimal.[Conclusions]The addition of basalt fiber and lignin fiber can improve the road performance of asphalt pavement.Keywords:basalt fiber;lignin fiber;aggregate gradation;road performance收稿日期：2022-11-15基金项目：2021年交通运输部重点科技项目清单（2021-TG-001）；河南省科技攻关计划（222102320443）；河南高等学校重点科研项目计划（22B58003）。