DS-8 powder quick-setting agent main role is to regulate the concrete setting time, mixed into the concrete with fast setting and hardening, early strength and other characteristics. It is suitable for concrete of ** and temporary support works.

Technical performance and characteristics

1、Appropriate dosage: 4%~6% of cement for anchor spraying concrete; 1%~3% for regulating the setting time of ordinary concrete.

2、The initial setting time of net mortar is ≤5min, and the final setting time of net mortar is ≤12min.

3, 1d compressive strength of mortar ≥7.0MPa.

4, mortar 28d compressive strength strength ratio ≥ 70%.

5, 90d compressive strength retention rate of mortar ≥70%.

6、Good adaptability to cement, small rebound rate.

Use

1, dosage: quick-setting effect is accelerated with the increase in dosage, but in order to ensure late strength, there should be a ** range, ** range can be determined by the test.

2, water-cement ratio; quick-setting effect is slowed down with the increase of water-cement ratio, water-cement ratio of 0.4, the cement has a good quick-setting effect; water-cement ratio of more than 0.4, although the initial setting time is still within 5 min, but the final setting time of more than 10 min, and the strength of the absolute value of the decrease.

3, before using the cement used in the project for trial mixing test, to determine the appropriate amount of mixing before a large number of use.

4、Water seepage, water leakage projects must increase the dosage.

Packing and Storage

1、Packed in inner plastic bag and outer woven bag, net mass per bag is 25kg.

2、Store in ventilated, cool special warehouse or fixed place, avoid moisture.

3、The effective storage period of the product is 6 months, and it can still be used after passing the inspection after the expiration date.