Underwater solidification performance of waterborne epoxy resin modified cement mortar and application of underwater strengthening pile foundation
Aiming at the application of underwater strengthening pile foundation by waterborne epoxy resin modified cement mortar,laboratory and engineering application tests were used to study the effect of polymer-cement ratio on the underwater solidification mechanical property,underwater bonding property and durability of the waterborne epoxy resin modified cement mortar.The results showed that the compressive strength and flexural strength of the waterborne epoxy resin modified cement mortar first increased then decreased with the increasing of polymer-cement ratio.The underwater bonding tensile strength of the waterborne epoxy resin modified cement mortar enhanced with the increasing of polymer-cement ratio.The water absorption rate and chloride ion permeation depth of the waterborne epoxy resin modified cement mortar reduced with the increasing of polymer-cement ratio.The waterborne epoxy resin could improve the mechanical property,bonding property and durability of the cement mortar effectively.The compressive strength and flexural strength reached the maximum value when the polymer-cement ratio was 5％,the basic property met the designing requirements meanwhile,and its application effect of underwater strengthening pile foundation was good.
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