Year1
- 规格：
- 50
- 数量：
- 2000
- 厂家：
- 广州大帅
Guangzhou Dashuai Building Materials Technology Co., Ltd.
Contact Telephone Miss Wei
High-strength non-shrinkage grouting material ultra-fine cement grouting material epoxy grouting material
Prestressed pipe grouting agent Prestressed pipe grouting agent seat slurry
Track cement bearing grouting material
Technical Features
Early strength, high strength, large fluidity (self-flowing without shrinkage, anti-oil penetration parameters
Early strength, high strength can reach a maximum strength of above one day, one day after the equipment is installed Run production.
, Self-flowing state only needs to add water and stir on site, and then pour it directly into the equipment foundation. It can fill all the gaps in the equipment foundation without vibrating.
, Micro-expansion to ensure the gap between the equipment and the foundation. Close contact.
, No rust effect, no corrosion hazard to steel bars, steel plates, etc.
, Resistant to oil penetration. After being immersed in engine oil for several days, its strength is higher than before being immersed in oil.
, Durability is lower There is no significant change in strength in fatigue test and freeze-thaw cycle test.
, good weather resistance, safe for long-term use at ℃ ~ ℃.
Uses
Grouting material is mainly used for anchor bolts and aircraft runways. Emergency repairs, fixation of nuclear power equipment, reinforcement of road and bridge projects, machine bases, steel structures and foundation pockets, secondary grouting of equipment foundations, buried steel bars, reinforcement and renovation of concrete structures, crack management of old concrete structures, installation of electromechanical equipment, Track and steel structure installation, static piling engineering pile sealing, building reinforcement, beam and column cross-section enlargement, wall structure thickening and water leakage repair, collapse grouting of various foundation projects and various emergency repair projects, etc.< br/> Edit this paragraph influencing factors [] The determining factors of the strength of grouting materials are mainly the mix ratio, water-cement ratio, aggregates, admixtures, density and later maintenance, etc.
Mix ratio
Through reasonable mix ratio design, the strength of the grouting material can be made higher.
Water-cement ratio
The compressive strength of the grouting material is directly proportional to the strength of the cement used for the grouting material. Calculated according to the formula, when the water-cement ratio is equal When the grouting material is prepared with high-strength grade cement, the compressive strength is much higher than that of the grouting material prepared with low-strength grade cement. In addition, the water-cement ratio is also proportional to the strength of the grouting material. Therefore, when the water-cement ratio remains unchanged, try to increase the cement dosage. It is wrong to improve the strength of concrete. At this time, it can only increase the workability of the grouting material and increase the shrinkage and deformation of the grouting material.
In short, the main factors affecting the compressive strength of the grouting material are cement strength and water ash. To control the quality of grouting materials, the most important thing is to control the water-cement ratio of cement and grouting materials. In addition, there are other factors that cannot be ignored that affect the strength of grouting materials.
Aggregate
Aggregate also has a certain influence on the strength of grouting materials. When the stone strength is equal, the surface of gravel is rougher than that of pebbles, and its bonding with cement mortar is stronger than that of pebbles. When the water-cement ratio is equal or the mix ratio is the same, The grouting material prepared from the two materials, the grouting material of gravel is stronger than that of pebbles. The type of fine aggregate has a smaller impact on the strength of the grouting material than the coarse aggregate, so the grouting material formula does not reflect the softness of the sand type, but the quality of the sand also has a certain impact on the quality of the grouting material. Therefore, the quality of sand and gravel must meet the requirements of the sand and gravel quality standards for each grade of grouting material. Since the quality of sand and gravel at the construction site changes relatively greatly, on-site construction personnel must ensure the quality requirements of the sand and gravel, and adjust the water-cement ratio in time according to the moisture content of the sand on site to ensure the grouting material mix ratio. The experimental mix cannot be compared with the construction mix. Than lumped together.
Density
At the pouring site, the grouting material must be vibrated evenly to expel the air inside and increase the density of the grouting material
Post-term maintenance
In the later stage, it should be maintained according to the provisions of the construction specifications. The temperature has a certain influence on the strength development of grouting materials. It is necessary to keep warm in winter to prevent freezing damage, and to prevent exposure to sun and dehydration in summer. Nowadays, winter construction generally adopts comprehensive heat storage method and steam curing method.
Reinforcement procedure Reinforcement construction is best carried out in accordance with the professional construction steps of discovery, problem raising, identification, detection and reinforcement design. After reinforcement, the strength, stiffness, crack resistance, stability and durability of the structure should meet the requirements. Since each step involves different organizations and may incur certain costs, Party A can entrust a reinforcement company to handle the above matters. How to carry out reinforcement design and related standards The reinforcement design of the high-strength non-shrinkage grouting material series should be based on the original design drawings, project status and current load requirements, determine which aspects of the bearing capacity of those components are insufficient, and design in accordance with the requirements of current technical specifications and standards.
Professional Specifications
"Technical Specifications for Post-Anchorage of Concrete Structures"
"Technical Specifications for Reinforcement of Concrete Structures"
"Technical Specifications for Reinforcement of Concrete Structures with Carbon Fiber Sheets"
/ "Highway Technical specifications for bridge and culvert construction
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