Scope of Application

1. Secondary grouting of equipment foundation and steel structure column base plate.
2. Anchor grouting of foundation bolts.

3. Concrete structure reinforcement grouting.  

Quality assurance of prestressed duct grouting material Qingyang polymer repair mortar

The size of villa staircase steps: The width of the steps is also very important in the selection of villa staircase step sizes, and must be strictly controlled and planned. The size selection of villa staircase steps must also be grand and beautiful, and the width of villa staircase steps should naturally be wider than that of commercial housing stairs. Generally ranging from 1m to 1.2m, this width not only looks grand visually, but also takes into account the handling of large furniture. Of course, there are also some personalized alternative designs, and the size and width of villa staircase steps may vary. Step size of villa stairs: Rotating stairs are a common decoration method for villa stairs. Rotating stairs are usually arranged in a circular shape around a single column, with a fan-shaped platform and step. The inner width of the stair step is small, forming a steep slope, and the structure of the rotating stairs is complex.

Construction preparation
1. Quality management at the construction site should have corresponding construction technical standards, a sound quality management system, construction quality control, and quality inspection systems. Before grouting, there should be a construction organization design or construction technical plan, which should be reviewed and approved.
Before grouting construction, mixing equipment, grouting devices, templates, and maintenance items should be prepared.
3. In addition to complying with the relevant provisions of the current national standard "Code for Acceptance of Construction Quality of Concrete Structures" GB 50204, formwork support should also comply with the following regulations:
① During secondary grouting, the horizontal distance between the formwork and the equipment base should be controlled at around 100mm; The top elevation of the template should not be lower than 50mm above the surface of the equipment base.
② When renovating and reinforcing concrete structures, sufficient grouting holes and exhaust holes should be left in the formwork support. The diameter of the grouting holes should not be less than 50mm, and the spacing should not exceed 1000mm. The grouting holes and exhaust holes should be 50mm higher than the high point of the holes.

Quality assurance of prestressed duct grouting material Qingyang polymer repair mortar

Among numerous cabinet countertop materials, artificial stone products can quickly occupy the countertop market, not only because the thickness of the board is uniform, the glossiness is good, and there is no radiation, but also because it can be bent freely and seamlessly bonded, truly achieving a seamless state. Due to insufficient hardness, the countertop field is being replaced by quartz stone. However, the high hardness of quartz stone has become a bottleneck that the industry and quartz stone manufacturers cannot overcome for seamless splicing. The obvious gaps in the countertop splicing not only affect the overall aesthetics, but also easily breed. Because the hardness of quartz stone sheet is second only to natural diamond, it can reach Mohs hardness level 7.

construction method
▲ Mixing
When mixing cement-based grouting materials, water should be added according to the required amount of water for the product.
2. Cement based grouting materials should be mechanically mixed. When mixing, it is advisable to first add 2/3 of the water and mix for about 3 minutes, then add the remaining amount of water and mix until uniform. If there are specific mixing requirements for AGM-340 products, they should be mixed according to their requirements.
3. The mixing site should be close to the grouting site.
▲ Anchor grouting of foundation bolts
1. The construction process of anchoring anchor bolts should meet the following requirements: ① Cleaning hole 1 ② Cleaning accumulated water in the hole 1 ③ Removing oil stains and rust on the surface of the bolt 1 ④ Inserting bolt adjustment and fixing 1 ⑤ Mixing AGM-340 grouting material 1 ⑥ Building 1 ⑦ Maintenance 1 ⑧ Installing equipment.
When drilling anchor bolts, the horizontal deviation of the bolt holes shall not exceed 5mm, and the vertical deviation shall not exceed 5 °. The wall of the bolt hole should be rough, and the hole should be cleaned thoroughly without any floating dust, oil stains or other impurities. Before grouting, soak it in water for 8-12 hours to remove any accumulated water in the hole. When the ambient temperature is below 5 ° C, measures should be taken to preheat and maintain the temperature above 100 ° C.
Before grouting, the oil stains and rust on the surface of the anchor bolts should be removed.
When pouring the mixed cement-based grouting material into the bolt holes, the position of the bolts can be adjusted as needed. Vibration is strictly prohibited during the grouting process, and bolts cannot be adjusted again after grouting is completed.
5. The upper surface of the grouting layer inside the hole should be about 50mm lower than the surface of the foundation concrete.

Thirdly, whether the carved pattern of the stone memorial archway is fine or not is also related to its quality. Good stone memorial archway carving technology will naturally be better, with clear patterns and a sense of hierarchy. The carved patterns have a smooth texture, vivid and realistic, and lifelike. Finally, the installation of the stone memorial archway is also very important. Because the stone memorial archway is made of multiple pieces, the quality of the stone memorial archway is determined by what kind of bonding is used and how to install it. In this regard, you may be unfamiliar with it. Here is a suggestion for you to consult a stone carving manufacturer for a detailed consultation. If high-quality stone memorial archway manufacturers are selected, the natural quality of the stone memorial archway produced will also be good.
▲ Secondary grouting
The appropriate grouting method should be selected for secondary grouting according to the actual situation of the project. The process flow should meet the following requirements: ① Cleaning the equipment foundation ② Soaking in water 24 hours in advance ③ Clearing accumulated water before grouting ④ Preparation of construction equipment ⑤ Mixing AGM-340 grouting material ⑥ Secondary grouting ⑦ Curing.
Before grouting, the equipment base plate and concrete foundation surface in contact with the grouting material should be cleaned thoroughly, and there should be no loose crushed stones, floating slurry, oil stains, wax, etc. 24 hours before grouting, the surface of the foundation concrete should be fully wetted, and the accumulated water should be removed 1 hour before grouting.
During secondary grouting, grouting should be carried out from one side until it overflows from the other side, and grouting should not be carried out simultaneously from opposite sides. After grouting begins, it must be carried out continuously and the grouting time should be shortened as much as possible.
When the track foundation or grouting distance is long, it can be constructed in sections according to the actual engineering situation.
5. Vibration is strictly prohibited during the grouting process. If necessary, a grouting booster should be used (pushing the grouting material along the bottom of the grout flow direction, and it is strictly prohibited to push it from the middle or upper part of the grouting layer).
After the equipment foundation grouting is completed, it is advisable to cut a 45 ° angle outward along the edge of the bottom plate 3-6 hours after grouting.

The definition of B1 level fire prevention standard is difficult to ignite, which means that it will extinguish itself when it is out of flame. In the presence of an open flame, organic insulation materials will produce melting droplets. When the temperature reaches 25 ℃ or above, they will still burn. Once organic insulation materials that do not meet fire safety standards are used on the exterior walls of buildings, it is equivalent to burying lifelong hidden dangers. The spray used in the 11.15 major fire in Shanghai was ignited by sparks generated solely from welding, causing irreparable pain. People must face up to the major problem of external wall insulation material fires and fundamentally prevent such incidents from happening. The characteristics of fire in machine insulation materials: Organic insulation materials are highly flammable, and the building area covered by them is the burnt area. That is, when a fire occurs, the height of the coverage is the same as the height of the fire, and the width is the same as the width of the fire.