DS-7 liquid alkaline quick-setting agent is suitable for concrete or mortar sprayed by wet method, featuring no dust and low rebound rate. It is suitable for concrete of ** and temporary support works.

Technical performance and characteristics

1、Product is transparent or white liquid, specific gravity 1.4±0.1, pH value 12.0±1.

2、Chlorine ion content≤0.1%; alkali content 1.8±0.1.

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

4, 1d compressive strength of mortar>7.0MPa.

5, mortar 28d compressive strength strength ratio>70%.

6, mortar 90d compressive strength retention rate>70%.

7, good stability of the product, stability indicators ≤ 5ml.

8, good adaptability to cement, late strength and a spray thickness is better.

Usage

1、The recommended dosage is 4%~6% of cement dosage.

2、Deduct 60% of the water consumption from the quality of quicklime when using.

3、Before use, carry out trial mixing test for cement used in the project, and determine the appropriate dosage before large-scale use.

4、Strengthen the early water spraying maintenance to ensure the late strength.

5、Strictly control the water-cement ratio of concrete.

6、Operators should take anti-corrosion measures.

7, avoid mixing with acidic substances

Packing and storage

1、Packed in iron drum or plastic drum, 200~250kg per drum; or in bulk in tanker truck.

2、Stored in ventilated, cool special warehouse or fixed place, avoid exposure to sunlight or freezing.

3、The shelf life of the product is 3 months, it can still be used after passing the inspection after the expiration date.