Study On The Impact And Aging Properties Of Epoxy Based Concrete

With the rapid development of transportation in our country, the damagement of pavement is attracting more and more attention, and the development of high performance of pavement material is the most direct solution to the problem. Epoxy based concrete with high strength and toughness have a lot of potential application space, but the domestic and international related research has just started. In light of the failure of pavement layer,this paper tried to develope a new type of pavement materials with high performance of compressive properties, flexural tensile strength and adhesive tensile properties. And the impact and aging properties of the new materials were further studied. The specific content includes the following points:(1) According to the actual parameters of Huangpu Bridge over Zhujiang River established the finite element mode of orthotropic steel deck and pavement layer to study the pavement performance index. Then developed a new type epoxy based concrete matching the index, tested by four point bending experiments. And the quasi static mechanical properties of the new type epoxy based concrete were further studied by uniaxial compression and interfacial bond tensile experiment.(2) With the impact test of different rate on the epoxy based concrete by split Hopkinson pressure bar, analyzed the strain rate effect of new material.At the same time, it can be seen from the curves of stress and strain that the material has the effect of strain hardening and strain softening.(3) Formulated the experimental scheme of the accelerated aging, according to the actual climate statistics of the Guangdong region.Completed the bending and impact test of the specimens after accelerated aging test, analysis the influence of the aging time to the quasi static flexural performance and dynamic mechanical properties of the epoxy based concrete.