ZWSA non-shrink high-strength grouting material
ZWSA non-shrinkage high-strength grouting material is a hydraulic dry-mix mortar developed under the guidance of foreign experts in special engineering materials and relevant experts of the National Building Materials Institute, relying on the resource advantages of our factory. It not only has ultra-high flow value, but also has high early strength, no shrinkage, strong adhesion, and good fire resistance. It has unique advantages in increasing the overall stability of the fixed body, improving its anti-mixing and fire resistance. ZWSA non-shrinkage high-strength grouting material is currently at the leading level in domestic and even international technical indicators.
A. Excellent fluidity: Under the condition of ultra-low water-cement ratio (normally 0.14 ± 0.01), the fluidity of ≥φ30Omm can still be guaranteed, even if the working capacity reaches 30min, the fluidity can still be guaranteed ≥φ270mm. So no matter what kind of complicated gap can be fully filled. The shape is superior and the construction is simple.
b. Good early strength, 2h compressive strength is more than 20MPa, 24h compressive strength is greater than 40MPa, 3d compressive strength is greater than 55MPa, and 24h flexural strength is greater than 10MPa, which is beneficial to improve the utilization rate of related projects, to a large extent save costs.
C. No shrinkage, high bonding strength, which satisfies all kinds of stress transmission. Due to the solid expansion base material, the material is better controlled in a non-shrinking state and the gripping force of the steel bar is greatly increased. Ensure the combination of anchor bolts and machine base (steel structure) foundation with new and old concrete.
D. There will be no floating and bleeding phenomena, which is conducive to the connection between the slurry surface and the construction monomer.
Usage and precautions
Preparation work: The surface to be irrigated must be cleaned, degreasing and decontamination, and the surface must be pre-wet until the saturated surface is dry.
Template production: The template needs to be stable and firm, cut to resist the side pressure, and no leakage is allowed. It is best to use a release agent on the template. The non-shrinkage grout should be used to fix the water-to-material ratio, and it is best to use mechanical stirring. Stir vigorously when mixing, and the mixing time is not less than 5 minutes, otherwise it will affect the fluidity of the material. The quicker the pouring, the better, and it should not be left for too long. It is important to remove the air input during mixing during pouring. Use a vibrator when necessary Type with an exhaust pipe.
Non-shrinkage grouting material needs to be cured in time on the 7th day. Do not soak in water. It is best to use wet bag curing or curing agent. The humidity of construction and curing shall not be lower than 0C.
Scope of application
It is suitable for all kinds of grouting that need to be poured without shrinkage. It is mainly used in large equipment and precision equipment anchor bolts and machine base primary or secondary grouting, anchor grouting, bridge support pad foundation, new and old cement joints, Window cabinet installation, etc., especially the grouting of the domestic high-speed railway track foundation is a very good material. The application range is very wide.
Packaging and storage
is packed in a moisture-proof plastic woven bag lined with a net weight of 50 Kg. Stored in a dry and cool environment, the shelf life is 6 months, and it will be used up after opening the bag.