关键词: CAE复合胶浆;强度;硬化机理;微观形貌

Abstract: The cement pavement surface damage repairing materials should have characteristics of good adaptability , high bonding strength and strong durability , leading the the attenuation on the composite modified of mortar repair materials .A new kind of organic-inorganic composite repair materials -CAE composite mortar was prepared .The flexural strength , compressive strength and anti-impact toughness of CAE mortar at different ages were tested .And the micro morphology of the hardening product at different ages of cement paste , cement emulsified asphalt mastic , cement epoxy emulsion mastic and cement emulsified asphalt waterborne epoxy ( CAE) mastic and the hardening mechanism were studied by XRD , SEM and FT-IR.The results show that when the amount of epoxy emulsion is 30％,there is no significant difference in flexural strength of the CAE composite mortar and compressive strength is lower than cement paste's, however, the result of anti-impact toughness test was significantly improved .And the emulsified asphalt and epoxy emulsion can delay the hydration of cement , but cannot prevent the hydration process . The Infrared Spectrometry ( IR ) results show that epoxy emulsion can be completely cured in CAE mastic.The network structure formed by emulsified asphalt and epoxy emulsion with the hydration products of cement are interspersed each other , so it makes the pore structure of CAE composite mortar materials improved .

Key words: CAE composite mortar;strength;hardening mechanism;micro morphology