On Improvements of Rubberized Concrete with Organosulfur Compounds
Crumb rubbers have been investigated as additives to concrete and promising results have been observed. Organosulfur compounds from a petroleum-refining factory were used to modify the surface properties of crumb rubbers. The intermolecular interaction forces between cement hydration products (C-S-H) and rubber crumbs were measured directly by an atomic force microscope (AFM) equipped with a colloid probe. Experimental data indicate that crumb rubber surface is more hydrophilic after the treatment with organosulfur compounds and the intermolecular interaction forces between C-S-H and rubber increase with the treatment of crumb rubbers with organosulfur compounds. Furthermore, these increased interaction forces lead to an increased concrete strength.
Jingtao Han, Zhengyi Jiang and Sihai Jiao
L. H. Chou "On Improvements of Rubberized Concrete with Organosulfur Compounds", Advanced Materials Research, Vols. 156-157, pp. 1459-1462, 2011