1. Product introduction:
JH-627 accelerating setting agent is a key promotion project of the Ministry of Construction in 1997, and its performance is superior to similar domestic products. The main component is metaaluminate, which is an essential product for concrete and mortar spraying projects.
2. Technical indicators and performance characteristics:
1. This product is pink or off-white powder.
2. After the concrete is sprayed, the initial setting is ≤3min and the final setting is ≤10min.
3. The strength increases by 40%-60% in 1 day, and the strength loses by 10%-20% in 28 days.
4. Concrete has high viscosity and low rebound rate.
5. No corrosion effect on steel bars.
3. Main uses:
This product is widely used in thin-walled structures at high altitudes or on narrow working surfaces (such as underground engineering slope reinforcement and foundation pit wall protection, building structure repair projects and protection projects).
4. Reference dosage
The dosage of this product is 3%-5% (based on the weight of cement), which can be adjusted according to the difference in cement composition.
5. Usage method:
1. Before spraying construction, the cement, sand and stone quick-setting agent should be dry-mixed according to the proportion prepared in the trial, and the water-cement ratio can be adjusted before spraying. The dry mix is used up in 20 minutes.
2. This product is more effective on ordinary Portland cement. If other cements are used, a trial mix test should be done.
3. Operators should take protective measures.
6. Performance indicators
Type indicators JC477-92 627A 627C 627D
Initial setting time
(min) no later than initial setting 5 3'30' 2'20' 2' 01＇
Final setting 10 7＇26＇ 6＇30＇ 5＇40＇
7d compressive strength (Mpa) is not less than 7 8.4 8.8 9.0
28d compressive strength ratio is not less than % 70 85 90 92
Dosage% 5-6 3-5 2-4
7. Packaging and storage:
This product is packed in a plastic woven bag lined with film, and the weight of each bag is 25 ±0.5kg. Stored in a dry and ventilated place, it is valid for six months. Do not use it if it becomes damp and caked. </p
微信扫一扫打赏
