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.
How many tons per cubic meter of CGM anchor bolt secondary grouting material? Taizhou CGM-340 grouting material
Industry insiders analyze that the common preventive measures for granite hollowing include the following six points: 1) Medium coarse sand should be used as the sand, and it should be witnessed that the sampling and inspection are qualified before it can be used in engineering. Drinking water should be used as the mixing water for mortar and plain cement slurry. For those whose water properties cannot be determined, they should be sent to the laboratory for testing. Only after passing the test can they be used in engineering. Construction shall be carried out strictly in accordance with the requirements of the construction process standards. The base layer shall be cleaned and moistened with water. After self inspection and passing the inspection, the supervising engineer shall conduct concealed acceptance before applying plain cement slurry and laying 1:3 dry hard mortar. Each concealed layer shall be inspected layer by layer to ensure no loopholes. Avoid using sexual cleaning agents. Due to the fact that the main component of granite is natural marble, which belongs to limestone and is mainly composed of calcium carbonate (CaCO3), non neutral substances can damage its luster. In order to achieve a cleaning effect, cleaning agents on the market often use substances with good cleaning effects as raw materials. Long term use can lead to the loss of luster and affect the appearance of the granite. It is recommended to avoid using non neutral items such as diluents and tile cleaners. Do not cover the carpet for a long time. Covering the surface of the granite with a carpet for a long time without replacement or ventilation, the moisture in the granite itself cannot be released through the capillary pores, resulting in an increase in the moisture content of the granite and causing the surface of the board to "spit out" water vapor in the future.
Construction preparation
1. 施工现场质量管理应有相应的施工技术标准、健全的质量管理体系、施工质量控制和质量检验制度。灌 浆前应有施工组织设计或施工技术方案，并经审查批准。
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.
How many tons per cubic meter of CGM anchor bolt secondary grouting material? Taizhou CGM-340 grouting material
The density and thickness of the hard foam insulation layer can be adjusted arbitrarily, with long-term technical scalability and continuous adaptability to low energy consumption and ultra-low energy consumption energy-saving standards. Construction procedures and methods for on-site mold casting of hard foam exterior wall insulation. Base treatment: Remove wall attachments and floating dust, and apply a layer of interface agent to the wall. {next page} Measurement and layout: Based on the horizontal lines placed on each layer and the vertical lines at the corners of the wall, determine the template. 9. Durability meets the requirement of 25 years. The porosity structure of the hard foam material is stable and basically closed, which not only has excellent insulation performance, but also has good frost resistance and sound absorption. The average service life of on-site cast hard foam insulation structure can reach more than 25 years under normal use and maintenance conditions.
施工方法
▲ 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.
The calculation formula is: H=2fcos θ/d # 8226; R (f) represents the surface tension of water; D represents the density of water; R represents the radius of the capillary tube; θ represents the wetting angle formed between water droplets and the surface of the stone. When Ca2+, Na+, K+, OH - ions reach the surface of the stone, due to the evaporation of water, white powder salt crystals are formed, or they react with carbon in the air to crystallize on the surface of the stone into lime like white hard blocks. These white hard blocks are the white flowers formed; Powder (sometimes gray black in color) is commonly referred to as pan. Its chemical formula is: Na+Na2CO3Ca2++OH -+CO2 → CaCO3 ↓+H2OK+K2CO3. After the formation of white marble (pan), due to the gradual expansion of crystals, crystal pressure is formed, which damages the surface of the stone.
▲ 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.
Its raw materials are mostly mixed from clay, quartz sand, and other materials. Ceramic tiles are mainly characterized by energy conservation and beautification. One obvious difference between ceramic tiles and marble is that the patterns of marble are naturally formed, so there are also flaws. Floor tiles are artificial, and each pattern has the same color! From a fundamental perspective, the development concept of marble tiles originates from marble and is derived from its decorative properties. It inherits and develops the decorative advantages of marble and is superior to it, with a unique style. Marble tiles are made using high-tech 5D iridescent inkjet technology and RNC to faithfully restore the natural color of marble, with no color difference, harmonious and natural colors, and delicate and realistic textures. Unlike marble, which has unstable colors.
