建筑材料学报
建築材料學報
건축재료학보
JOURNAL OF BUILDING MATERIALS
2009年
6期
667-671
,共5页
级配%沥青混合料%动稳定度%车辙模量%动态蠕变劲度模量%结构设计参数
級配%瀝青混閤料%動穩定度%車轍模量%動態蠕變勁度模量%結構設計參數
급배%력청혼합료%동은정도%차철모량%동태연변경도모량%결구설계삼수
gradation%asphalt mixture%dynamic stability(DS)%rutting modulus(E_(DS))%dynamic creep stiffness modulus(S_(dy))%structure design parameter
研究了分别基于AC13和AC25优化出的9组级配、SBS改性中海70#沥青和中海70#沥青两种结合料、花岗岩和石灰岩两种集料以及50,70 mm两种车辙试件厚度等条件下的沥青混合料动稳定度(DS)与车辙模量(E_(DS)),E_(DS)与动态蠕变劲度模量(S_(dy)),S_(dy)与DS这三者的关系.结果表明,不同沥青混合料的S_(dy)与采用厚度匹配的车辙试件DS之间存在良好的相关性.因此可以将DS转换为S_(dy),并用其作为沥青路面结构设计的参数.
研究瞭分彆基于AC13和AC25優化齣的9組級配、SBS改性中海70#瀝青和中海70#瀝青兩種結閤料、花崗巖和石灰巖兩種集料以及50,70 mm兩種車轍試件厚度等條件下的瀝青混閤料動穩定度(DS)與車轍模量(E_(DS)),E_(DS)與動態蠕變勁度模量(S_(dy)),S_(dy)與DS這三者的關繫.結果錶明,不同瀝青混閤料的S_(dy)與採用厚度匹配的車轍試件DS之間存在良好的相關性.因此可以將DS轉換為S_(dy),併用其作為瀝青路麵結構設計的參數.
연구료분별기우AC13화AC25우화출적9조급배、SBS개성중해70#력청화중해70#력청량충결합료、화강암화석회암량충집료이급50,70 mm량충차철시건후도등조건하적력청혼합료동은정도(DS)여차철모량(E_(DS)),E_(DS)여동태연변경도모량(S_(dy)),S_(dy)여DS저삼자적관계.결과표명,불동력청혼합료적S_(dy)여채용후도필배적차철시건DS지간존재량호적상관성.인차가이장DS전환위S_(dy),병용기작위력청로면결구설계적삼수.
Dynamic stability(DS)of asphalt mixtures can better characterize anti-rutting behavior of asphalt pavement at high temperature but can not be used as a design parameter to calculate the structure thickness of asphalt pavements.However,it can be transformed into rutting modulus(Era)to find the relationship between dynamic creep stiffness modulus(S_(dy)) and DS.The relationships between DS and E_(dy),E_(dy) and S_(dy),S_(dy) and DS of asphalt mixtures were examined,in which 4 sets of gradation AC13 using Zhonghai as-phah 70# modified with SBS and granite aggregate and 5 sets of gradation AC25 using Zhonghai asphalt 70# and lime stone aggregate were used.The rut specimen's thickness of 50,70 mm for AC13 and AC25 were used.The results show there exist a good relationship between S_(dy) and DS of asphalt mixtures for U-sing matching wheel tracking test specimens and it is concluded that DS can be transformed into S_(dy) as a de-sign parameter to calculate the structure thickness of asphalt pavements.
