▎ 摘　　要

NOVELTY - Energy storage protection type cement-based micro-variation monitoring coating comprises an anode coating, an electrolyte coating and a cathode coating, which are sequentially arranged, such as the anode coating comprises 5-50 wt.% waterborne epoxy resin, 20-80 wt.% cement, 1-10 wt.% anode filler, 1-20 wt.% conductive filler and 10-50 wt.% water. The electrolyte coating comprises 5-50 wt.% water-based epoxy resin, 20-70 wt.% cement, 10-30 wt.% inorganic base, 1-20 wt.% conductive filler and 10-40 wt.% water. The cathode coating comprises 5-50 wt.% water-based epoxy resin, 20-80 wt.% cement, 1-10 wt.% cathode filler, 1-20 wt.% conductive filler and 10-50 wt.% water. USE - Energy storage protection type cement-based micro-variation monitoring coating for existing building strain monitoring used in cement-based sensor (claimed). Uses include but are not limited to concrete structure health monitoring for finding and concrete early damage, and ensuring the safe service of large-scale infrastructures such as bridge and tunnel structures and pre-control of major geological disasters. ADVANTAGE - The three-layer coating constitutes a primary battery, which charged and stored by a charging device to protect the material of the positive electrode. The coating has a high signal-to-noise ratio and withstand overcharge, discharge, short circuit, and overheating service, and has strong adhesion to the substrate and good durability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) A method for preparing energy storage protection type cement-based micro-variation monitoring coating, which involves: weighing water-based epoxy resin, conductive filler, water, anode filler, inorganic base and cathode filler according to a ratio, and respectively stirring and uniformly mixing to form anode slurry, electrolyte slurry and cathode slurry. The anode slurry, the electrolyte slurry and the cathode slurry are respectively added into cement according to the proportion, and stirred the mixture, until the mixture is uniform to respectively form anode slurry, electrolyte slurry and cathode slurry. The blade coating or spraying the anode slurry, the electrolyte slurry and the cathode slurry are performed on the surface of the existing building structure (1) layer by layer according to the inner layer, the middle layer and the outer layer to form an anode coating (2), an electrolyte coating (3) and a cathode coating (4), and curing and hardening to form target coating. (2) A cement-based sensor, which comprises the cement-based micro-variation monitoring coating, and further comprises a conductive electrode (5) arranged on the surface of the existing building structure in the coating area and cathode coating. The anode coating is attached to the surface of the existing building structure. The cement-based micro-variation monitoring coating is formed a current loop with a monitoring device communicated with the outside through the conductive electrode, which is preferably metal electrode or a graphite electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of connection structure between energy storage protection type cement-based micro-variation monitoring coating and the conductive electrode. Building structure (1) Anode coating (2) Electrolyte coating (3) Cathode coating (4) Conductive electrode (5)