▎ 摘　　要

NOVELTY - Self-monitoring type concrete epoxy resin repairing material comprises 1-10 pts. wt. carbon material, 1-20 pts. wt. binder, 100-200 pts. wt. epoxy resin, 10-50 pts. wt. diluent, 10-80 pts. wt. curing agent, 1-10 pts. wt. curing accelerator, and modified fatty amine component comprising 100-150 pts. wt. aliphatic amine and 100-150 pts. wt. ether. USE - The self-monitoring type concrete epoxy resin repairing material is useful for preparing concrete, which is used in airport, high-speed rail, dam, hydropower station, subway and tunnel. ADVANTAGE - The method utilizes hollow glass microspheres covered by the conductive carbon material as the lightweight conductive filler of the epoxy resin repairing material, significantly reduces amount of conductive fillers, and realizes health monitoring of the weak link of the repairing material by detecting the change value of resistivity. The repairing material has light weight, forms conductive network with a barrier structure, and has high sensitivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparation method of self-monitoring type concrete epoxy resin repairing material, comprising (i) placing conductive carbon materials of different mass fractions in an aqueous solution containing binder, and uniformly dispersing to obtain suspension of the conductive carbon material, (ii) placing the hollow glass microspheres in the suspension of the conductive carbon material, fully stirring, filtering, and drying to obtain hollow glass microspheres coated with the conductive carbon material, and (iii) placing 10-50 pts. wt. hollow glass microspheres coated with conductive carbon material in 100 pts. wt. epoxy resin and 10-30 pts. wt. epoxy resin, carrying out planetary stirring in the mixture of active diluent, fully dispersing, adding 30-80 pts. wt. curing agent and 2-4 pts. wt. curing accelerator, fully mixing and uniformly curing through mechanical stirring to obtain product; and using method of self-monitoring epoxy resin repairing material for concrete, comprising using high pressure grouting to inject concrete with self-monitoring epoxy resin repairing material into concrete cracks, pre-burning stainless steel mesh electrodes, curing, subjecting repair materials to non-destructive cyclic compressive load, non-destructive incremental cyclic compressive load, simultaneous testing of stress/strain and resistivity changes under incremental compressive loads to failure, obtaining relationship between stress strain and resistivity change, detecting the stress, strain and failure of the repair material in real time through the resistivity change, when the maximum resistivity change is ≤ 8%, i.e. the conductive network in the substrate is not irreversibly damaged under the action of stress, the epoxy resin repair material is in an undamaged state, when the maximum resistivity change is 8-100%, shows that micro-cracks are generated in the epoxy resin repair material, and when the maximum resistivity change is greater than 100%, the epoxy resin repair material is irreversibly damaged and fails.