Shaoguan high-strength non-shrinkage grouting material manufacturer, Zhongshan equipment installation secondary grouting material manufacturer, Foshan high-strength non-shrinkage grouting material manufacturer, Shenzhen epoxy repair mortar manufacturer, Zhuhai equipment installation secondary grouting material manufacturer, Shantou equipment foundation installation secondary grouting material manufacturer
Guangzhou Dashuai Building Materials Technology Co., Ltd.
Contact number 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 support grouting material
Technical features
Early strength, high strength, large fluidity (self-flowing without shrinkage, anti-oil penetration parameters
, early Strong and high-strength, the maximum strength can reach above in one day, and the equipment can be put into operation one day after installation.
Self-flowing state only needs to add water and stir on site, and then pour it directly into the equipment foundation, and it can be filled into the equipment foundation without vibrating. All gaps.
, Micro-expansion to ensure close contact between the equipment and the foundation.
, No rust effect, no rust hazard to steel bars, steel plates, etc.
, Resistant to oil penetration, after being soaked in engine oil for days Its strength is more than that before oil immersion.
, Durability fatigue test, freeze-thaw cycle test strength has no significant change.
Good weather resistance ℃ ~ ℃ long-term safe use.
Purpose
Groutting material is mainly used for anchor bolt anchoring, emergency repair of airport runways, fixation of nuclear power equipment, reinforcement of road and bridge projects, machine bases, steel structures and foundation pockets, secondary grouting of equipment foundations, and buried steel bars. Reinforcement and renovation of concrete structures, crack management of old concrete structures, installation of mechanical and electrical equipment, installation of tracks and steel structures, pile sealing in static pile pressing projects, building reinforcement, enlarging beam and column sections, thickening wall structures and preventing water leakage Repair, collapse grouting of various foundation projects and various emergency repair projects, etc.
Edit this paragraph influencing factors [] The main determinants of the strength of grouting materials are mix ratio, water-cement ratio, aggregates, admixtures, density degree and subsequent 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 grouting material and grouting The strength of the cement used for the material is directly proportional. Calculated according to the formula, when the water-cement ratio is equal, the compressive strength of the grouting material prepared with high-strength grade cement is much higher than that of 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, it is wrong to try to increase the cement dosage to increase 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 that affect the compressive strength of grouting materials are cement strength and water-cement ratio. To control the quality of grouting materials, the most important thing is to control the two main links of cement and water-cement ratio of grouting materials. In addition, the influence of grouting materials Strength has other factors that cannot be ignored.
Aggregate
Aggregate also has a certain influence on the strength of grouting materials. When the strength of the stone is equal, the surface of the gravel is rougher than the surface of the pebbles, and its adhesion with the cement mortar The knot strength is stronger than that of pebbles. When the water-cement ratio is equal or the mix ratio is the same, the strength of the grouting material prepared from the two materials 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 according to 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
Shaoguan high strength non-shrinkage grouting material manufacturer