Study On Cement Asphalt Martor And The Pavement Performance Of Mixture

In recent20years, the tremendous achievements were obtained about freewayconstructions. Because of complex climate and worse transportation environments,many high type highway pavements were initial damage after opening to traffic. So,more prior pavement materials were needed to solve the problem. At the same time,more attentions were paid on development of cement, emulsified asphalt, andcement-asphalt mortar in China, and successes were got by people in cement concretepavement which was incorporated with emulsified asphalt and emulsified asphaltconcrete which was incorporated with cement, recently. Then cement-asphalt mortarwas used as flexible base in high-speed railway and succed. And then, manyexperiences were obtained.In order to expland using of Cement-Asphalt mortar, the paper based on theCement-Asphalt mortar itself, take more time and energy to study Cement-Asphaltmortar semi-flexible pavement material. And test studies and assesses wererecommended on pavement performance of Cement-Asphalt mortar mixture roadmaterial.Based on Cement-Asphalt mortar’s performance is related to material form, thepaper recommended mix design from performance for CA mortar. And the orthogonalexperiment design is adopted to make study on the overall influence law by asphalt,cement, water, fiber, by testing compressive strength, breaking strength,compressive-breaking ratio and fluidity and confirm the optimum proportioning of theself-made cement asphalt mortar finally.Cement-asphalt mortar mixture would be got by incorporating coarse aggregateinto Cement-Asphalt mortar and mixing. Aiming at making full use ofInterlocked-denseness of coarse aggregate to form CA mortar’s strength, using coarseaggregate void filling method (CAVF) to recommend mix design was benefitInterlocked-denseness of coarse aggregate, friction of sand, and adhesion of cementhydration products and asphalt were made full use of. It’s good for forming strengthfor CA mortar mixture.Due to asphalt, standards of asphalt mixture were adopted to assess properties ofCement-Asphalt mortar mixture. In order to study and analyses its room properties,Marshall Test, Wheel Tracking Tests, Prism uniaxial compressed test, Bending Test of Small Beam, Immersion Marshall Test, and the Freeze Thaw Split Test were carried on for differentasphalt-ratios of Cement-Ashphalt mortar mixture. And studing Cement-Asphalt mortarmixture’s high-temperature stability, low-temperature crack resistance, and waterstability contrasted to asphalt mixture AC-13.Results of tests and studies showed that self-made Cement-Ashphalt mortarmixture that adopted CAVF method recommend mix design ensured forming itsframework densestructure. By comprehensive comparison and analyses, finding thatperformances of Cement-Asphalt mortar mixture were prio to AC-13asphalt mixture,and of which6%asphalt-aggregate ratio was the best proportion for Cement-Asphaltmortar mixture and all properties better, has best pavement performance,especiallyhigh-temperature stability. Even10%asphalt-aggregate ratio，its dynamic stabilitywas still2530times/mm，and final deformation was only2.575mm. Mixed coldfabrication process was used to prepare Cement-Asphalt mortar and its mixture,saving energy and protecting environment, and having huge environment and societybenefits. This paper is a preliminary exploration, the results will be important fordevelopment of Cement-Asphalt mortar and its mixture.