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SODIUM LIGNOSULPHONATE USED IN CONSTRCTION CHEMICALS CAS :8061-51-6
Sodium Lignonsulphonate concrete water reducer are mainly for concrete mixture as water-reducing additive. Low dosage, low air content, water reducing rate is high, adapt to most kind of cement. It can be confected as concrete early-age strength enhancer, concrete retarder, antifreeze, pumping aids etc.
When adding 0.25% of the cement in the concrete, the latter will be adsorbed on the surface of the cement particle, forming a film between the cement and water, prevent the condensation between the cement particle, to ensure that the cement particle has a large enough specific surface area.
On the one hand, the concrete has a large liquidity, on the other hand, the cement particle can produce sufficient hydrolysis reaction and hydration reaction. In this way, the strength of 3 days, 7 days and 28 days of concrete can generally be increased by about 10%, saving cement consumption of about 5%, saving water consumption of more than 8% and the concrete has a certain cold resistance, easier to pour and construction.
NO | Index items | Standard value | Test Results |
1 | Appearance | Yellow Brown powder | Meets the requirement |
2 | PH Value(1% soluble) | 7-9 | 8.8 |
3 | Dry matter | 93%min | 93.50 |
3 | Moisture | 7.0%max | 6.5 |
4 | lignosulphonate | 60%min | 61.40 |
5 | Total reducing matter | 3.0% max | 2.5 |
6 | Inorganic salt (Na₂SO₄) | 2.0%max | 0.5 |
7 | Water insoluble matter | 2.0%max | 1.85 |
8 | Calcium Magnesium General quantity | 0.5%max | 0.25 |
9 | Viscosity(20% aqueous solution 18-20℃) | 7-10 | 8.7 |
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