| 孙培,韩森,吕晓霞,徐鸥明,王兆宇.用于粘结层的高性能乳化沥青制备与性能评价[J].材料导报,2016,30(14):125-129, 144 |
| 用于粘结层的高性能乳化沥青制备与性能评价 |
| Development and Performance Evaluation of High-performance Emulsified Asphalt for Tack Coat |
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| DOI：10.11896/j.issn.1005-023X.2016.14.028 |
| 中文关键词: 道路工程 增粘剂 稳定剂 粘结力 高性能乳化沥青 抗剪强度 |
| 英文关键词: road engineering, tackifier, stabilizer, adhesion stress, high-performance emulsified asphalt, shear strength |
| 基金项目:国家自然科学基金(51578076);中央高校基本科研业务费专项资金项目(310831161019) |
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| 中文摘要: |
| 为提高粘层沥青的路用性能,采用SBS改性剂和乳化剂A、B、C,并选取LD胶乳和BB胶乳作为增粘剂,无机A、B和有机A、B作为稳定剂,制备高性能乳化沥青；通过室内试验研究了改性剂、乳化剂等原材料类型和掺量对改性乳化沥青性能的影响；将优选的高性能乳化沥青、普通乳化沥青和SBS改性乳化沥青用于粘层,成型复合板并钻取芯样,对芯样进行直剪试验,进一步评价高性能乳化沥青的路用性能。研究结果表明:当采用1.0%乳化剂A+0.2%无机A+0.4%有机A+4.8%SBS+1.2%BB胶乳时,乳化沥青具有优良的高低温性能和粘结力；竖向荷载、剪切速率、试验温度对层间抗剪强度影响很大,无论在何种试验条件下,高性能乳化沥青均表现出较好的抗剪能力,能够满足旧水泥路面上加铺的磨耗层对粘层材料的高要求。 |
| 英文摘要: |
| In order to improve the road performance of asphalt material for tack coat, SBS was used as a modi-fier, A, B and C were used as emulsifiers, LD latex and BB latex were used as tackifiers, inorganic A, B and organic A,B were used as stabilizers to prepare high-performance emulsified asphalt. With laboratory tests, the influence of material parameters, such as modified dosage and emulsifier type, etc on modified emulsified asphalt was studied. The further evaluation of the road performance of high-performance emulsified asphalt was conducted by using the emulsified asphalt with outstanding performance, ordinary emulsified asphalt and SBS modified emulsified asphalt in the tack coat and taking shearing tests on the core samples. The results showed that the emulsified asphalt had excellent high temperature stability, low temperature performance and good adhesion stress when 1.0% emulsifier A+0.2% inorganic A+0.4% organic A+4.8%SBS+1.2%BB latex was used. Vertical load, shear rate and test temperature had a great influence on shear strength. No matter what conditions was adopted, the high-performance emulsified asphalt showed good shear capacity and could satisfy the high demand of wearing layer which was overlaid on old cement road. |
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