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.  

Quotation for early strength grouting material, high-strength non shrinkage grouting material for tunnel head

Thirdly, moisture-proof paper should be placed inside the box, and the products should be placed tightly and orderly. Each box should come with an inspection certificate. Check the toughness and strength of the backing paper in terms of quality. Qualified backing paper will not tear during transportation and normal construction. To check the color uniformity, you can generally lay several mosaic tiles flat in a well lit area and visually inspect whether their luster is uniform. Check for cracks, defects, and missing edges and corners. Observing the degree of color matching, the decorative area of decorative glass mosaic should account for more than 2% of the total area and be evenly distributed Three important considerations when choosing mosaic tiles: 1. Neat specifications: When choosing, pay attention to whether the particles are of the same size and size, whether the edges of each small particle are neat, place a single mosaic tile on a horizontal ground to check for flatness, and whether there is a thick latex layer on the back of the single mosaic tile.

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.

Quotation for early strength grouting material, high-strength non shrinkage grouting material for tunnel head

Natural stone refers to the general term for materials extracted from natural rocks and processed into blocks or slabs. The decorative stone used in building decoration mainly includes two categories: marble and granite. Marble refers to rocks of metamorphic or sedimentary carbon salt rock type, whose main chemical composition is carbon calcium, accounting for more than 5%, as well as carbon magnesium, calcium oxide, manganese oxide, and secondary silicon oxide. Marble belongs to medium hard stone materials. The color and composition of marble slabs are related, with white containing carbon calcium and carbon magnesium, purple containing manganese, black containing carbon or asphalt, green containing diamond compounds, yellow containing chromium compounds, reddish brown, purple, brownish yellow containing manganese and iron oxide hydrates, and multiple colors containing various impurities of different compositions.

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.

Therefore, concrete stairs or composite stairs made of pressed steel plates and concrete are often used in steel structure residential buildings. When designing, attention should be paid to the placement and treatment of stair beams, as beam to beam connections often occur here, which can cause the connected beam to bear concentrated loads, making it more prone to local instability. The steel staircase uses 6mm steel folded plates as treads, with concrete poured on top. The two ends of the treads are connected to the staircase beam (channel steel) with L56 angle steel and M12 bolts. This method overcomes the weakness of good sound transmission effect of general steel stairs by using 4mm concrete, and the upper flange of the channel steel can be welded with alloy stair handrails, which is easy to construct and worth promoting. The steel structure floor slab of a multi story building with a 5-storey floor system must have sufficient bearing capacity, stiffness, and integrity. Currently, the commonly used method is to lay profiled steel plates on steel beams and then pour reinforced concrete slabs of about 1mm, forming a composite floor slab of profiled steel plates. The floor beams are generally connected with simply supported equal height connections, and sometimes can also be made with unequal height connections. For example, when using pressed steel plate composite floor slabs, in order to facilitate the laying of pressed steel plates, the top surface of the main and secondary beams needs to differ in the thickness of the pressed steel plates, and the net floor height of the building can also be increased. In the design process, the combined effect of steel beams and floor slabs should be considered, which will significantly improve the bearing capacity and overall stability of the beams, effectively reduce beam height, save steel, and lower project costs.
▲ 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 batching staff calculates the material selection plan in a timely and accurate manner based on the drawing list and the detailed distribution plan. Firstly, it is necessary to ensure that the color of the main facade (front) is consistent with the sample, and then adjust it according to each axis facade, area, and floor. Use slightly different colors on the back, corners, secondary main faces, and high floors (above 1 floor). But the color of the entire facade (part) should transition naturally, without any color differences visible, and calculate how many large and small sizes each large board should be cut and how many small sizes should be cut to achieve the matching use of products of different sizes. The bridge cutting machine operator must strictly follow the batching plan of the batching personnel for processing. If there are more efficient methods, priority can be given to adopting them. Special attention should be paid to products with smooth patterns, paying attention to the direction of smooth patterns. Products with chase patterns must be aligned with smooth patterns, and numbered on the side of the product, indicating the direction of the arrow.