CAJ | 학술논문

为研究橡胶沥青开级配混合料的马歇尔设计方法以及开级配混合料罩面应用的关键技术,通过析漏试验、飞散试验和不同次数的马歇尔击实试验提出了橡胶沥青开级配混合料油石比预估方法和马歇尔击实标准,表明油石比预估可采用亚利桑那州的预估公式,马歇尔击实标准采用双面50次.通过对开级配混合料级配对性能影响的分析,提出了橡胶沥青开级配混合料的级配范围,发现橡胶沥青开级配混合料应尽量减少4.75 mm以下集料用量.通过总结橡胶沥青开级配罩面的工程经验,提出了老路处治、粘层设计等方面的关键技术,其中,粘层材料宜采用改性乳化沥青.
위연구상효력청개급배혼합료적마헐이설계방법이급개급배혼합료조면응용적관건기술,통과석루시험、비산시험화불동차수적마헐이격실시험제출료상효력청개급배혼합료유석비예고방법화마헐이격실표준,표명유석비예고가채용아리상나주적예고공식,마헐이격실표준채용쌍면50차.통과대개급배혼합료급배대성능영향적분석,제출료상효력청개급배혼합료적급배범위,발현상효력청개급배혼합료응진량감소4.75 mm이하집료용량.통과총결상효력청개급배조면적공정경험,제출료로로처치、점층설계등방면적관건기술,기중,점층재료의채용개성유화력청.
The mix design method of asphalt rubber open-graded friction course (AR-OGFC) by the Marshall test and key technologies of AR-OGFC overlay are studied.Based on the draindown test, the stripping test and the Marshall test by different beating times, the asphalt content estimating method and Marshall beat criterion are studied.It is found that the asphalt content of AR-OGFC can be estimated by the formula of Arizona, and the proper Marshall test criterion for AR-OGFC is 50 beats on both sides.By analyzing the influence of gradation on OGFC performance, the gradation of AR-OGFC is recommended, and the amount of aggregate passing 4.75 mm should be minimized for AR-OGFC.Through investigation of AR-OGFC overlay projects, key technologies such as the treatment of underlying pavement and the selection of tack coat are advanced, and modified emulsified asphalt should be used in AR-OGFC overlay tack coat.