естественно бентонит натрия с хорошим водонепроницаемый Effe

[ProductIntroduction] This product has a property of swelling in water and the swelling index can reach from 15 to 20. What's more, the expansion of high-density colloids have exclusive performance of water. Due to this properties, natural sodium bentonite can be used as water-proof material in many fields. [ProductUse] The water-proof property of natural sodium bentonite takes a main role in three fields. To be more specific, it has an anti-seepage effect in the field of construction engineering (civil engineering, subway, garden, artificial lake) and has anti-seepage effect as well as corrosion resistant effect in the field of environmental sanitation. Besides, it also has an anti-seepage effect in the field of hydraulic engineering( reservoirs and dams of rivers or lakes). [TechnicalSpecifications] Item Index Swellingindex ≥24mL/2g Methyleneblue: ≥34 Moisturecontent ≤13%bymassrelatedtothedrymass Mineralparticles>0,125mm ≤5%bydrymass Waterabsorbtioncapacityafter24h(Enslin-Neff) >450%(Enslin-Neff)