High strength grouting material has many advantages and wide applications. The following is a brief introduction to the information of high-strength non-shrinkage grouting material for everyone.
I. Main components
The composition of grouting material mainly includes the following parts: cementing material, swelling component, early strength component, water reducing component, thickening and water retaining component, aggregate and so on.
1. Cementing material: cement (Portland cement, aluminate cement, sulphoaluminate cement, etc. ), fly ash, mineral powder, silica fume, etc.
2. Expansion components: gypsum, calcium sulphoaluminate, calcium oxide, calcium sulphoaluminate-calcium oxide (HCSA),
3. Early strength agent components: calcium formate, lithium chloride, lithium carbonate and other early strength agents;
4. Water reducing components: melamine, melamine water reducing agent, polycarboxylic acid water reducing agent and other superplasticizers;
5. Thickening and water-retaining components: cellulose ether with medium and low viscosity, polymer rubber powder, etc.
6. Aggregate: quartz sand and high-strength river sand.
Second, the product features
1. Early strength, high strength: 1-3 days compressive strength can reach more than 30-60Mpa, 28 days strength 60- 120 MPa, customized production according to engineering needs.
2. High gravity flow: it can fill all gaps and meet the requirements of secondary grouting of equipment.
3. Micro-expansibility: ensure that the equipment is in close contact with the foundation, and there is no shrinkage after secondary grouting. The bonding strength is high and the clamping force with round steel is not less than 6Mpa.
4. Winter construction: outdoor construction is allowed at-10℃.
5. Strong durability: this product is an inorganic cementing material, and its service life is longer than that of foundation concrete. After millions of fatigue tests, the strength of 50 freeze-thaw cycles has no obvious change. After soaking in engine oil for 30 days, the strength is obviously improved.
Third, the scope of application of the product
1. Suitable for grouting machine base, anchor bolts and other equipment foundations.
2. Reinforcement, emergency repair and reinforcement of beams, slabs, columns, foundations, floors and roads of buildings.
3. Anchoring of anchor bolts and steel bars and structural reinforcement can be carried out.
4. Embedded construction joints in subways, tunnels and underground works.
5. And the secondary grouting of steel structure (track, steel frame, steel column, etc.). ) is fixedly connected with the foundation.