1. After the construction of the grouting pump, the grouting pipeline should be flushed clean, which is conducive to the maintenance of the grouting equipment.
2. When the grouting operation is completed, the grouting should be prevented from losing from the pipeline; When slurry hardening, all openings, grout pipes, and vents are tightly sealed to prevent the ingress of water and harmful substances.
3. We also need to know that the equipment is different, the maintenance rules are different, in order to extend the service life of the equipment, improve the equipment integrity rate, prepare an equipment maintenance system before the equipment is used, and record each maintenance or repair.
4. Try to avoid using the grouting pump in direct sunlight, because in the process of working the grouting pump, the staff needs to add a certain amount of water-retaining material to the grouting material, and only at the right temperature can the water retention of the grouting material not be weakened. If the sunlight is too strong, it will greatly reduce the water retention of the grout.
5. After chiseling and removing the loose concrete in the reconstruction and reinforcement area, the shape of the hole at the repair position should be formed into a hole shape that is large on the outside and small on the inside; In the case of exposed steel bars, the concrete with a thickness of at least 20 mm under the steel bars should be chiseled off, and then the dust should be removed by pressure, wind and water, and the part should be maintained to keep the foundation surface wet; The formwork support should be sealed, firm and leave enough grouting holes and exhaust holes, and the grouting holes and exhaust holes should be 50mm higher than the height of the holes