CAJ | 학술논문

为了改善传统半柔性路面材料的低温抗裂性能,采用水泥-乳化沥青-水性环氧树脂三相有机无机复合材料作为新型胶结体系制备的半柔性路面材料.采用匀质性及回弹模量检测方法确定胶结材料中的乳化沥青与水泥的质量比,调整水性环氧树脂与乳化沥青的质量比研究其低温抗裂性能.结果表明:当水性环氧树脂占乳化沥青的质量比为0.6时,半柔性路面材料的弯拉劲度模量达到2 332 MPa,最大弯拉应变达到2 662με,接近沥青玛蹄脂混合料的水平.扫描电镜研究表明:三相有机无机胶结体系形成以沥青材料为连续相、水性环氧树脂为改性分散相、水泥水化产物为衔接体的三维空间网络结构, 既改善了水泥浆材料的干缩应力,同时增强了胶浆与基体沥青混合料的界面粘结力.
위료개선전통반유성로면재료적저온항렬성능,채용수니-유화력청-수성배양수지삼상유궤무궤복합재료작위신형효결체계제비적반유성로면재료.채용균질성급회탄모량검측방법학정효결재료중적유화력청여수니적질량비,조정수성배양수지여유화력청적질량비연구기저온항렬성능.결과표명:당수성배양수지점유화력청적질량비위0.6시,반유성로면재료적만랍경도모량체도2 332 MPa,최대만랍응변체도2 662με,접근력청마제지혼합료적수평.소묘전경연구표명:삼상유궤무궤효결체계형성이력청재료위련속상、수성배양수지위개성분산상、수니수화산물위함접체적삼유공간망락결구, 기개선료수니장재료적간축응력,동시증강료효장여기체력청혼합료적계면점결력.
To improve the low temperature crack resistance of traditional pavement, semi-flexible pavement was prepared by using cement-emulsified asphalt-waterborne epoxy resin three-phase organic inorganic composite materials as grouting material. The mass ratio of emulsified asphalt and cement in grouting materi-als was determined by the method of homogeneous and resilient modulus testing. Results showed that when the mass ratio of waterborne epoxy and emulsified asphalt was 0.6, the maximum bending strain and bending stiffness modulus reached 2 662με and 2 332 MPa, respectively, which was close to those of the stone ma-trix asphalt. SEM analysis illustrated that in the three-phase organic inorganic grouting system, three-dimen-sional network structure was formed, in which asphalt, waterborne epoxy resin and cement hydrates worked as continuous phase, dispersed phase and connector, respectively. This structure not only improved the ce-ment material shrinkage stress but also enhanced the bonding force between mortar and matrix asphalt mix-ture.