AC_13沥青混合料冻融劈裂强度影响因素.pdfVIP

第 28卷第 2期 重 庆 交通 大学 学 报 ( 自然 科学 版 ) V ol. 28 No. 2 2009年 4月 JOURNAL OF CHONGQ ING JIAOTONG UN IVERSITY( NATURAL SC IENCE) A pr. 2009 AC13 陆学元, 张素云2 ( , 23005 ; 2 , 23005 ) : AC 3 SBS, , , , 0075 mm475 mm 95 mm , ; ; : ; ; SBS; ; ; ; : U4 4 : A : 6740696( 2009) Factors Affecting FreezingThaw ing SplitStrength forAC13 A sphaltM ixture 2 LU Xueyuan , ZHANG Suyun ( H ead Office of Anhui Province Expressw ay, AnhuiH efei 23005 , China; 2Occupation Technology College of Anhui Province Transportation, Anhu iH efei 23005 , Ch ina) Abstract: Tak ing AC 3 SBS m od ified asphalt m ixture as the research object, the freez ingthaw ing sp litstrength, not freezingthaw ing splitstrength and TSR are studied based on the estmi ation of water stab ility indexThe results show that the grading is the main factor of con trolling the change of its freezingthaw ing sp litstrength, and the key sieving pores are 0075mm, 475mm and 95mm respectively; how ever, the mi pact of asphalt is not so sign ificantPorosity and quality of raw m aterials is another key factor of controlling w ater stab ilityIt is confirmed that us ing lmi e as filler is m ore conducive than using otherm aterials as filler to mi prove the freezingthaw ing splitstrengthTherefore, the techn icalm easures and rec omm endations to control the design and the construction quality are put forw ard K ey words: test design; statistics m ethods; SBS m odified asphalt m ixture; gradation; asphaltaggregate ratio; freez ingtha w ing splitstrength; M arshall perform ance 1 , , , , 6 , ,