Lignosulfonate used in concrete

Usage of lignosulfonates on the base of sodium, relating to the hydrofilizing plastificators, at the concrete manufacture and dry construction mixtures lets to reduce the consumption of components up to 10-15%. Demixing of the concrete mass reduces and its solidity rises, the speed of hardening slows down. They insert additives of lignosulfonates in the quantity of 0,15-0,20%, it is necessary to insert superplastificators from the mass of dry substance in the quantity of 0,5-2,0% from the mass of dry concrete. When replacing superplastificators by lignosulfonates the solidity of concrete rises up to 20-25%, freeze resistance – in 3-4 times and the cost of mixtures reduces cause of adding of small amount of lignosulfonates, what is connected with their adsorbtion on the surface of hard phase. Usage of lignosulfonates reduces humidity of raw mud if conserving its flow behavior, what rises the manufacture of stove and reduces specific flow volume to the burning of clinker. With the usage of intensifier on the base of lignosulfonates the production of grinding units rises and there is an opportunity to change expensive and deficit chemical products.


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