| abstract |
The invention provides a spray coating material for repairing leakage of underground pipelines, which comprises 75-85 parts of frame material, 15-20 parts of reinforcing agent, 2-5 parts of stabilizer and 8-16 parts of additive in parts by weight. In the present invention, the framework material, reinforcing agent, stabilizer and additive act synergistically, so that the sprayed material has excellent compressive strength, excellent waterproof performance and fast solidification speed. As can be seen from the results of the examples, the spraying material provided by the present invention has a bonding strength of 6.4MPa under the condition of pipeline containing water, a 2h compressive strength of 13.5MPa, a tensile strength of 7.4MPa, and a water permeability coefficient of 0, indicating that the present invention provides The special spraying material can be sprayed and repaired in the wet or watery environment of the pipeline. |