Year1
- 规格：
- 50
- 数量：
- 10000
- 厂家：
- 广州大帅
Miss Wei
High-strength non-shrinkage grouting material
High-strength non-shrinkage grouting material is A kind of cement-based self-flowing micro-expanding dry mortar, which has the characteristics of early strength, high strength, self-flowing and micro-expansion. It is suitable for secondary grouting of equipment foundations, reinforcement and transformation of concrete structures, anchoring of steel bars and anchor bolts, etc.
Product features of high-strength non-shrinkage grouting material
. Early strength and high strength: the daily compressive strength can reach more than 3-, and the bolts can be tightened and tested within hours after grouting. The highest day intensity can reach above.
.Has high self-flowing properties: it can be used by adding water and stirring on site, and can fill all gaps without vibrating.
3. Micro expansion: no shrinkage after grouting, ensuring close contact between equipment, bolts and foundation.
.Winter construction: Outdoor construction is allowed at a minimum temperature of -℃.
.Durability: This product is an inorganic cementing material, and its service life is longer than the service life of the base concrete. After tens of thousands of fatigue tests and
freeze-thaw cycle tests, there is no obvious change in strength.
Resistance to oil penetration and high temperature impact: after being immersed in engine oil for 3 days, the strength is higher than before being immersed in oil. Flame cutting and welding of the steel bars are allowed after planting.
Scope of application of high-strength non-shrink grouting material
Universal reinforcement type
Grouting thickness 3<< secondary grouting of equipment foundation, anchor bolt anchoring, buried steel bars, building beams, slabs, columns, etc. Reinforcement of foundations and floors.
Pisolite reinforced type
Contains ~ large aggregate, suitable for grouting layer thickness, and grouting length < secondary grouting of equipment foundation. Reinforcement (repair thickness) of beams, slabs, columns, foundations and floors of buildings.
Ultra-fine reinforced type
Ultra-fine aggregate, suitable for secondary grouting of equipment foundations and steel structure column footings with grouting layer thickness <<3. The gaps between the concrete beams and columns reinforced angle steel and the concrete are grouted.
Ultra-early strengthening type
The hour strength is reached, and it is suitable for rapid repair of railway sleepers, rapid repair of cement concrete pavements, airport runways, etc., and rapid repair of water sealing and leakage.
The technical indicators of high-strength non-shrinkage grouting material comply with B/- standard indicators ℃ standard maintenance, test block size:,
Project
Model
Vertical
Expansion rate ()
Compressive strength
Fluidity
Slump
Minimum construction temperature (℃)
Reference
Water consumption
Bulk weight
(/3)
Day
3 days
Day
Universal reinforced type
3～
Pisolite reinforced type< br/>
3～
3 Ultra-fine reinforced type
3～
Item
Model
Vertical
Expansion rate ()
Compressive strength
Fluidity
Slump
Reference water consumption
Bulk density
(/3)
Hours
Days
Days
Super early strengthening type
3～
Strength conversion between various test mold sizes Relationship
Trial mold size
Strength ratio ()
.
Age ()
Days
3 days
Days
High-strength non-shrinkage grouting material grouting construction instructions
1. Foundation treatment
Foundation surface It should be chiseled. Clean the foundation surface. There should be no gravel, floating slurry, floating ash, oil stains, release agents and other debris. The foundation surface should be fully moistened one hour before grouting. Remove any accumulated water one hour before grouting.
2. Formwork support
Set up the formwork according to the grouting construction drawing. The joints between the formwork and the foundation, and between the formwork and the formwork are sealed with cement slurry, tape, etc. to ensure that the entire formwork is watertight.
The horizontal distance between the formwork and the equipment base should be controlled to the left and right to facilitate grouting construction.
The top elevation of the formwork should be higher than the upper surface of the equipment base.
If grouting occurs during grouting, it should be dealt with in time.
High-strength non-shrinkage grouting material 3. Preparation of grouting material
Generally, add water and stir according to the standard of 3- for the general reinforced type, and add water and stir according to the standard of - for the pisolite reinforced type.
Mechanical or manual mixing can be used to mix high-strength non-shrinkage grouting materials. It is recommended to use a forced mixer for mechanical mixing to ensure sufficient and even mixing, and the mixing time is 3-minutes. Manual mixing time is completed within minutes. The fluidity of the mixed grouting material will decrease as the parking time increases, and it should be used up within minutes. It is strictly prohibited to mix any additives into high-strength non-shrinkage grouting materials.
High-strength non-shrinkage grouting material 4. Grouting construction method
For long equipment or track foundation, segmented construction should be used.
After the grouting starts, it must be carried out continuously without interruption, and the grouting time should be shortened as much as possible.
High-strength non-shrink grouting material 5. Maintenance
After grouting is completed, the grouting material should be covered with a straw bag or rock wool quilt immediately after initial setting and kept moist.
During winter construction, grouting materials, mixing water and maintenance measures should comply with the relevant provisions of the current "Construction Quality Acceptance Code for Concrete Structure Engineering" (B).
Do not subject to vibration for hours after grouting to avoid damaging the unhardened grouting layer.
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