High-strength Non-shrink Grout Materials for Steel Bar Anchoring

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High-strength Non-shrink Grout Materials for Steel Bar Anchoring

Description
High-strength non-shrink grout materials for steel bar anchoring is a free flowing, non shrink high strength grout admixture.
● Early high strength: The strength after one day is up to 40MPa, the steel bars anchored under the normal temperature is permitted to draw after 24-hour.
● Vertical burying of steel bars: The grouts can be directly filled into all gaps of the steel bar burying holes after extended with water and mixed on site, without need for vibrating.
● Horizontal burying of steel bars: The GRM anchor material are extended with properly reduced water and mixed, and then stranded it into strips and inserted into the steel bar burying holes, into which, finally, the steel bars are buried.
● Micro expansion: It ensures no shrinkage and close contact between anchoring grouts and surfaces of the buried steel bars.
● Durability: No obvious change occurring in the strength after two million times of fatigue tests and fifty freezing-thawing cycle tests.
● Heat resistance: Welding is permitted on the steel bars which are anchored by such grouts. The heat resistance is up to 500℃ and no impact produced on anchoring strength.

Features
1. Early high strength: The strength after one day is up to 40MPa, the steel bars anchored under the normal temperature is permitted to draw after 24-hour.
2. Vertical burying of steel bars: The grouts can be directly filled into all gaps of the steel bar burying holes after extended with water and mixed on site, without need for vibrating.
3. Horizontal burying of steel bars: The GRM anchor material are extended with properly reduced water and mixed, and then stranded it into strips and inserted into the steel bar burying holes, into which, finally, the steel bars are buried.
4. Micro expansion: It ensures no shrinkage and close contact between anchoring grouts and surfaces of the buried steel bars.
5. Durability: No obvious change occurring in the strength after two million times of fatigue tests and fifty freezing-thawing cycle tests.
6. Heat resistance: Welding is permitted on the steel bars which are anchored by such grouts. The heat resistance is up to 500 and no impact produced on anchoring strength.

Applications
1. It can be used for construction of the steel bar anchoring on such bases as reinforced concrete, brick wall and rocks.
2. It mainly used for anchoring of the equipment foundation bolts, and anchoring and shot concreting project in the tunnel works, etc.
3. Construction is carried out with reference to relevant regulations in the Technical Specification for Construction of Concrete-based Grouting Material (YB/T9261-98).
4. Construction is carried out with reference to relevant regulations in the Specification for Construction and Acceptance of Concrete Structures (GB50204).
5. The anchoring grout is available after extended with water and mixed on site, with water consumption recommended in the Quality Certificate. The construction of horizontal anchoring can be implemented in the way of stranding the grouts into strips or by means of self-flowing.

Technical Specifications

Compressive Strength (MPa)			Vertical Expansion Rate	Fluidity (mm)	Reinforcement Adhesiveness	Water Consumption	Pouring Quantity	Critical Particle
1 d	3 d	28 d
30-50	40-60	70-80	1-3‰	≥240mm	6MPa(round steel)	10-14%	2200kg/m3	3mm(Particle Adjustable)

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