SULPHUR IMPREGNATED CONCRETE
Sulphur, sand and coarse aggregate are the ingredients of this concrete. Molten sulphur is added to the preheated aggregates in a mixture. The hot mix is immediately transferred into the moulds to fill them completely. The products manufactured with sulphur concrete need no curing and the moulds can be stripped immediately as the sulphur solidifies rapidly under normal temperatures. One of the major advantages of these products is that they can be remoulded and concrete can be reused with minimum or no wastage. These products have very low absorption and less permeability.
Strength upto 44 MPa have been reported when 30 % of sulphur, 50% of sand and 20% of coarse aggregate are mixed. These are therefore versatile for use as precast slab elements of canal and tunnel linings.