冰雪地区干法橡胶改性沥青混合料性能分析

冰雪地区干法橡胶改性沥青混合料性能分析

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论文独创性声明

本人声明：本人所呈交的学位论文是在导师的指导下，独立进行研究工作所取得的成果。除论文中已经注明引用的内容外，对论文的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。本论文中不包含任何未加明确注明的其他个人或集体已经公开发表的成果。

本声明的法律责任由本人承担。

论文作者签名：彦孙处硼1年“月／7日

论文知识产权权属声明

本人在导师指导下所完成的论文及相关的职务作品，知识产权归属学校。学校享有以任何方式发表、复制、公开阅览、借阅以及申请专利等权利。本人离校后发表或使用学位论文或与该论文直接相关的学术论文或成果时，署名单位仍然为长安大学。

(保密的论文在解密后应遵守此规定)

论文作者签名：铱乃久,-沪f 1年p石月／7日

导师签名：／茎乃)吐卅1年p g月／7日

摘要

在我国，由于冬季气候寒冷致使路面积雪积冰的问题非常严重，不仅影响交通安全，

且制约道路运输效率和经济发展。为此寻求科学有效的路面除冰雪技术成为重要的研究

方向。论文将具有高弹性的橡胶颗粒以骨料的方式直接加入沥青混合料中(即干法)，可

改变路面冰雪层受力状态及冰雪与路面的粘结状态，以达到破冰除雪的目的。同时，橡

胶颗粒沥青混合料的应用为回收废旧轮胎橡胶提供了新途径。

论文采用体积法将橡胶颗粒掺入混合料中。通过试验研究确定出合理的拌和工艺。

分析了橡胶颗粒不同掺量及粒径对路用性能的影响，并推荐出最佳掺量及粒径。由于橡

胶颗粒沥青混合料在应用中容易出现脱粒、掉粒的问题，针对这一现象本研究对橡胶颗

粒沥青混合料中掺入消石灰、水泥及消石灰+水泥等添加剂进行了相关试验研究，并对橡

胶颗粒沥青混合料的路用性能进行了试验验证。

论文以BPN值及其变化量作为除冰雪效果的评价指标，利用破冰模拟试验仪进行除冰雪试验。对橡胶颗粒沥青混合料及普通沥青混合料进行了除冰雪效果的对比研究，并分析了橡胶颗粒的粒径、掺量及试验温度对除冰雪效果的影响。‘

研究结果表明，采用马歇尔二次成型方法降低了空隙率和回弹率，成型效果较好。

掺入橡胶颗粒提高了沥青混合料的高温稳定性及低温抗裂性。橡胶颗粒的添加明显改善

了沥青混合料的除冰雪性能，掺量及粒径越大效果越好。试验温度的降低对除冰雪性能

有不良影响。添加1．5％的消石灰明显提高了橡胶颗粒沥青混合料的水稳定性，且路用

性能最优。综合除冰雪性能及路用性能考虑，确定出橡胶颗粒最佳掺量为3％，粒径为20

目。

关键词：橡胶颗粒，沥青混合料，除冰雪性能，添加剂，二次成型

Abstract

In china,there is a lot of accumulated snow and ice on

pavement because of the cold

winter ．It not only seriously influences the traffic safety

but also restricts the road conveying

efficiency and economic growth ．So ，it’S very important to clear the snow and ice on

pavement ．Taking the rubber particles with high elastic into asphalt mixture as aggregate is a new method ，called dry process Through changing the stress condition of ice ．snow and the bound

state between pavement

and ice —snow it can reach the purpose ．Meanwhile ，the process provides

a new approach for recovenng rubben

The thesis adopts volume method to mix the rubber particles into mixture and confirms the reasonable mixing technology ．Analyze the influence on pavement performance

of different mixing amount and particle size and recommend the best combination ．For resolving

the problem of flaking in application ，the study mixes slake lime ，cement and

the both mixture into asphalt

mixture ．And t est the pavement performance through experiments ．

The thesis takes BPN and it's variation as evalumion index for cleating ice ．snow ．It uses

icebreaking instrument to perform simulation test ．It studies the difference between the rubber particles asphalt mixture and common asphalt mixture in clearing ice —snow ．And it analyses the influence of grain size and proportion of rubber and text temperature in clearing ice ．snow ． The research results indicate that adopting Marshall forming method can reduce the void ratio and resilience to guarantee the fine molding quality ．Taking the rubber particles

into asphalt mixture Can enhance the high temperature stability and low temperature crack resistance ．However,it

has

a bad influence on

water stability ．It also

Can improve the performance of clearing

ice-snow ．With the size and proportion increasing the

result is beaen Low temperature has a bad effect on result ．Adding 1．5％slaked lime into rubber asphalt mixture Can obviously improve the water

stability ．Meanwhile it has the best road performance ．Taking the clearing

ice —snow and road performance into account ，the thesis

confirms the size 20 and proportion 3％as the best combination ．

Key words ：rubber particles ，asphalt mixture ，cleating ice —snow

property,additive ，forming