剂量和稳定剂对SBR／SBS改性沥青性能的影响

通过多种性能评价方法，考察了SBR剂量以及添加稳定剂对SBR／SBS改性沥青性能的影响。试验结果表明，SBR剂量超过4%导致沥青离析。加入稳定剂使聚合物产生交联，导致SBR／SBS改性沥青的延度降低、粘韧性和抗变形能力提高。     

复合改性提高SBR改性沥青粘韧性指标的研究

采用交联反应及添加“SBR＋SBS”复合改性剂制备的试样均能满足交通部《公路改性沥青路面施工技术规范》JTGF40-2004的SBR类改性沥青指标要求,不同的基质沥青及不同的改性工艺所制备的试样,其粘韧性和韧性指标的改善程度及一致性均存在一定的差别。     

克拉玛依SBR改性沥青研制及使用性能评价

摘要：本文介绍了以克拉玛依石油沥青为原料研制的SBR改性沥青的生产工艺，并进行产品指标分析，突出克拉玛依SBR改性沥青优良的粘韧性和韧性；通过热贮存试验，评价了产品的热稳定性；通过混合料检测和PG性能分级试验，对SBR改性沥青进行路用性能评价。     

塔河油SBR改性沥青生产技术的开发与应用

通过制备丁苯橡胶母液或直接加入一添加特制的化学交联剂工艺,开发出了符合交通部JTGF40--2004聚合物改性沥青技术要求的SBR类改性道路沥青产品,考察了主要工艺条件对改性沥青性质的影响,加入交联剂可有效提高改性沥青的粘韧性和韧性及使用性能。按照美国SHRP胶结料性能评价体系以及交通部《公路沥青路面施工技术规范》,分别对工业生产的塔河油SBR改性沥青及其混合料进行了性能评价,结果表明,塔河油SBR改性沥青混合料性能符合所有气候分区的要求,性能等级符合PG76—28级别,具有较好的高低温性能和抗水损害以及抗疲劳开裂等性能。     

SBS与SBR复合改性沥青性能影响因素探究

为改善西北地区道路路面高低温及耐老化性能,考察不同基质沥青种类、SBS和SBR种类、芳烃油和稳定剂用量对SBR/SBS复合改性沥青性能的影响。结果表明:采用B公司沥青、LG411SSBS、显元SBR,LG411SSBS添加量为2.0%,显元SBR添加量为2.0%,稳定剂添加量为0.025%时,制备得到的SBR类改性沥青各项指标优异,软化点高、低温延度大、粘附性及韧性指标优异,并通过调节芳烃油用量可直接改变Ⅱ系列改性沥青牌号。     

多聚磷酸与SBR复配改性国产90号沥青的研究

研究了多聚磷酸复配SBR改性沥青的复配条件及工艺。考察了交联剂，增塑剂，制备工艺对沥青高低温性能，粘韧性，韧性的影响。结果表明，增塑剂能够提高沥青的抗老化性，但对粘韧性和韧性产生负影响。交联剂能够提高沥青的粘韧性，韧性，但会降低沥青的低温延度，在丁苯橡胶用量较大时，适当的制作工艺能显著改善沥青老化后的低温延度。     

SIS在自粘聚合物改性沥青防水卷材中的应用研究

试验研究了SIS相对于SBR在自粘聚合物改性沥青防水卷材中应用方面的优势,SIS可完全替代SBR,不仅能显著提高自粘混合料的软化点,改善低温性能,还可明显提升剥离强度却又不会增加内聚强度,进而改善卷材的粘结性能,且能保持热老化后性能良好.     

SBR改性沥青的稳定性评价

SBR改性沥青在生产应用中,存在SBR改性剂在基质沥青中析出或凝聚现象.就SBR改性沥青稳定性开展了研究,对SBR改性沥青的稳定性进行了评价,通过热储存外观观察、离析试验的软化点差和5℃延度差指标评价改性沥青稳定性.结果表明,利用软化点差和5℃延度差指标能够更好地评价改性沥青稳定性,且5℃延度差指标更加有效.     

自粘型橡胶改性沥青油毡的研制

本文介绍了以SBR为主要改性材料制成的自粘型橡胶改性沥青油毡的结构、生产工艺及产品性能。由于SBR国内产量大,价格较低,该油毡具有良好的发展前景和经济效益。     

丁苯橡胶（SBR）改性沥青混合料铺筑路面试验及应用

本文对单家寺稠油和胜利100号混配、缩合沥青、SBS 改性沥青和 SBR 改性沥青等几种沥青混合料铺筑试验路面,经试验 SBR 改性沥青具有校好的路用性能,并且有可观的经济价值和显著的社会效益     

Performance of SBR-Modified Asphalt Yufeng Cong

A dose of SBR modifier added to asphalt can improve asphalt's performance in stability, permanence, viscosity, and resistance to aging. Better application performances of asphalt pavement are affected directly by proper SBR modifying. This paper shows some investigations that confirm the relationship between the addition of SBR with the structure and the properties of SBR-modified asphalt. This paper also discusses the modified asphalt high temperature property, low temperature ductility, and mechanism of SBR-modified asphalt. The addition of SBR modifier showed an increase in viscosity, softening point, and elastic recovery of modified asphalt with rising temperature. When the temperature rises, the improvement of SBR-modified asphalt in softening point, elastic recovery, and visco-toughness result from SBR cross-linking. Although the lengths of low temperature ductility of SBR-modified asphalt are increased, the viscosities of modified asphalt increase; however, the softening point between the upper layer and lower layer were about 1.8°C after the isolated experiment.     

Performance of SBR-Modified Asphalt Yufeng Cong

Abstract

A dose of SBR modifier added to asphalt can improve asphalt's performance in stability, permanence, viscosity, and resistance to aging. Better application performances of asphalt pavement are affected directly by proper SBR modifying. This paper shows some investigations that confirm the relationship between the addition of SBR with the structure and the properties of SBR-modified asphalt. This paper also discusses the modified asphalt high temperature property, low temperature ductility, and mechanism of SBR-modified asphalt. The addition of SBR modifier showed an increase in viscosity, softening point, and elastic recovery of modified asphalt with rising temperature. When the temperature rises, the improvement of SBR-modified asphalt in softening point, elastic recovery, and visco-toughness result from SBR cross-linking. Although the lengths of low temperature ductility of SBR-modified asphalt are increased, the viscosities of modified asphalt increase; however, the softening point between the upper layer and lower layer were about 1.8°C after the isolated experiment.     

中海高粘高弹1-D改性沥青性能研究

采用常规试验和动态剪切流变试验研究了中海高粘高弹改性沥青胶结料性质,并对这种改性沥青混合料的路用性能进行了测试评价。试验结果表明,这种特殊的改性沥青的60℃黏度可达到91 768 Pa.s,弹性恢复超过95%,沥青混合料具有良好的抗车辙能力、水稳定性和抗低温开裂能力。中海高粘高弹改性沥青适合应用于重载交通道路以及桥隧、机场跑道等工程。     

Modifying asphalt emulsion with different types of polymers for surface treatment applications

Asphalt emulsion produced from local asphalt 60/70 (Suez Co.) was modified with different types of polymers such as epoxy resin, latex styrene butadiene styrene (SBS), poly vinyl acetate (PVA), and with a mixture of two or more types of above mentioned polymers to produce a modified asphalt emulsion with high performance. This paper describes the method and technique for preparing asphalt emulsion as well as the tests, and evaluates several aspects concerning the prepared emulsion such as performance of evaporation residues, fuel and acid resistance, rheological properties, and durability. The results obtained revealed that all the modified asphalt emulsions gave better performance as compared with unmodified emulsion. Asphalt emulsion modified with a mixture of epoxy resin, latex SBR, and PVA showed the best road performance in terms of fuel and acid resistance. It was observed that the weight loss for unmodified binder, residue after evaporation of water, after immersion in kerosene for 120 min is 90% of its initial weight, while the binder improved with a mixture of SBS latex, epoxy resin, and PVA showed a weight loss of ?16% and 9% of its initial weight. Also, the admixture gives high acid resistance (weight loss ～ 9%) after immersing in 5% HCl. The dynamic viscosity test showed that asphalt emulsion modified with a mixture of SBS latex, epoxy resin, and PVA has the highest viscosity value which is a promising indication about the validity of its use for pavement in different applications.     

胶乳改性乳化沥青性能试验研究

实验室内通过添加不能掺量的SBS胶乳和SBR胶乳分别制成改性乳化沥青。分别考察了筛上剩余量、恩格拉粘度、储存稳定性以及残留物的软化点、延度等几项主要指标随胶乳掺量变化的情况。SBS胶乳和SBR胶乳在对乳化沥青高低温性能的改善上各有侧重,建议在对高温性能要求较为严苛的地区使用SBS胶乳改性乳化沥青,而在对低温性能要求较为严苛的地区使用SBR胶乳改性乳化沥青。     

丁苯胶乳改性道路沥青的推广应用

用丁苯胶乳对胜利１００号沥青进行改性试验．发现随着胶乳掺量的增加．沥青的高温性能、粘结性能改善幅度也大。但综合考虑沥青生产成本等因素．认为：对丁苯胶乳改性胜利１００号道路沥青．掺胶量控制在２％即可满足一般高等级道路工程的需要。文中还介绍了丁苯胶乳沥青近年来的推广使用情况并做了相应的技术经济分析和建议。     

塔河原油特性及其沥青产品性能评价

简要讨论了塔河原油及其渣油的主要性质，并分别通过传统方法和SHRP方法对塔河原油制备的道路沥青和聚合物改性沥青进行了性能评价。结果表明，塔河沥青具有软化点和针入度指数高的特点。SHRP方法评价表明，尽管塔河沥青老化前后的低温延度低，但是在具有较高的抗高温变形能力前提下，能够保持优良的低温抗裂性。与其它原油制备的改性沥青相比，塔河原油制备的SBS和SBR改性沥青，具有独特的高、低温性能和更低的感温性。