Quick-hardening (low-alkali) sulphoaluminate cementitious binder
Classification:
Detailed introduction
Implementation Standard: GB 20472-2006
Technical Performance:
◆ Specific surface area: The specific surface area shall be no less than 350 m²/g. 2 /kg.
◆ Setting time: Initial set shall occur no earlier than 25 minutes, and final set no later than 180 minutes; adjustments can be made according to customer requirements.
◆ Alkalinity: The pH value after adding water for 1 hour shall not exceed 10.5.
◆ Compared with other types of cementitious binders, this product exhibits markedly rapid hardening and early strength development, while also offering low alkalinity, minimal expansion, rapid stabilization, and resistance to drying shrinkage and deformation. When compounded with glass fibers, it maintains a high strength retention rate and boasts a long service life, making it a dedicated cementitious binder for GRC products.
| Strength grade | Compressive strength (MPa) | Flexural strength (MPa) | ||||||
| 3 hours | 6 hours | 1 day | 7 days | 3 hours | 6 hours | 1 day | 7 days | |
| 32.5 | 15.0 | 20.0 | 25.0 | 35.0 | 2.0 | 2.5 | 3.5 | 5.0 |
| 42.5 | 18.0 | 24.0 | 30.0 | 45.0 | 2.5 | 3.0 | 4.0 | 5.5 |
| 52.5 | / | / | 40.0 | 55.0 | / | / | 4.5 | 6.0 |
Scope of Application:
It is used to produce a wide range of high-quality, high-strength grouting materials, repair mortars, cement self-leveling mortars, grouting pastes, injection grouts, anchoring agents, and other specialized engineering materials. It can also be employed in the manufacture of interior and exterior composite wall panels, foam insulation boards, beamless floor slabs, exterior curtain wall panels, ventilation ducts, European-style relief sculptures, various structural components, greenhouse frames, space-frame panels, and other small architectural decorative elements.
Precautions:
◆ Prior to use, proper preparatory work must be carried out. Mixed materials must be used up before initial setting; once mortar or concrete has lost its workability, it must not be re-mixed.
◆ During use, if the setting time is found to be unsuitable, it can be adjusted by adding a sulfur-aluminum-specific accelerator or retarder; the dosage must be determined through testing.
◆ Gelling agent products must be cured only after final setting, and the curing period shall not be less than three days.
Packaging and Storage:
◆ Packaged in plastic woven bags or ton bags.
◆ Each bag is packaged with a net weight of 50 kg or 1,000 kg; during transportation and storage, it must not be stored together with other cementitious materials.
◆ Store in a sealed container in a dry environment; shelf life is no less than 45 days. Use the entire contents after opening; if the product expires or becomes damp, its performance will be compromised and it must be retested and found compliant before use.
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