Nano modified silicate capillary crystalline material and use method thereof

A durability protection method for concrete, characterized as including following steps:

• a first step, rinsing a concrete surface;
• a second step, spraying agent A material or alternately spraying agent B material and agent A material on the rinsed concrete surface;
• said agent A material consisting of by weight:
• 5-30 portions of sodium silicate, 5-20 portions of potassium silicate, 0.05-0.5 portions of surfactant, 0.1-1 portions of reaction retarder, 0.1-0.5 portions of reductant, 0.1-2 portions of reaction accelerator, 0.01-0.5 portions of anti-freezing auxiliary, 0.1-1 portions of metal ion blocking auxiliary, 0.1-1 portions of surface enhancer, 0.1-0.5 portions of antirusting agent, and 40-70 portions of deionized water;
• wherein,
• said surfactant of agent A material is dodecyl trimethyl ammonium chloride, and said agent A material is obtained by mixing said surfactant, reaction retarder, reductant, reaction accelerator, anti-freezing auxiliary, metal ion blocking auxiliary, surface enhancer, antirusting agent, and deionized water, stiring them in a high-speed shearing kettle at 1000-2000 rpm, and adding sodium silicate solution and potassium silicate solution while stirring at high speed until the addition is complete and the mixed solution is in a completely transparent and uniform liquid state,
• said agent B material consisting of by weight:
• 5-30 portions of calcium hydroxide, 0.05-1 portions of surfactant, 5-30 portions of sodium hydroxide, and 40-80 portions of deionized water.