Inorganic Chemical Industries Research Group, Iranian Research and Development Center for Chemical Industries (IRDCI), P.O. Box 13145-1494 Tehran, I.R. IRAN
Mixtures of mineral aggregate and modified sulfur, wherein the modified sulfur functions as a binder, are termed sulfur concretes or sulfur mortars depending on the form of the mineral aggregate. Molten sulfur reacted with olefinic additive, at 130-140 ºC, and then mixed with preheated filler and aggregates. Sulfur mortar samples were prepared by mixing 32 % molten sulfur, 10 % filler and 58 % aggregates. The effects of reaction temperature, and heating time, were tested on mechanical properties of sulfur mortar. Sulfur mortars were prepared by silica flour, mica and carbon as filler in which silica flour can reduce odor problems. Sulfur mortar specimens have compressive strength (200-424 kg/cm2), tensile strength (more than 80 kg/cm2), and flexural strength (110-120 kg/cm2).
 Vroom, A.H., Sulfur Cements, Process for Making Same and Sulfur Concretes Made There From, U.S.Patent NO. 4,058,500, Nov.15, (1977).
 Vroom, A.H., Sulfur Cements, Process for Making Same and Sulfur Concretes Made There From, U.S. Patent NO. 4,293,463, Oct.6, (1981).
 McBee., W.C., Sulliven, T.A. and Jong, B.W., Modified Sulfur Concrete Technology, Proceedings, SUFUR-81 International Conference on Sulfur, Calgary, pp. 367-388,(1984).
 Blight, L., Currell, B.R., Nash, B.J., Scott, R.A.M. and Stillo, C., “Preparation and Properties of Modified Sulfur Systems”, New Use of Sulfur-ΙΙ, Advances in Chemistry Series 165 (American Chemical Society) 13-30 (1977).