Sulfur-Extended High-Performance Green Paving Materials

Abstract

Currently, there is a strong need of high-performance and environment-friendly paving materials in Russian Federation. Sulfur dumps near the oil industry enterprises consumes area which otherwise could be occupied by vegetation, contributing to the improvement of the environmental situation. Incorporation of sulfur in bulk building materials contributes to decrease of load to the environment. The results of numerous studies of sulfur-extended asphalt concretes are summarized in the present work. For the suppression of hydrogen sulfide and sulfur dioxide we propose to use the complex nanoscale modifier. The application of such modifier leads to several positive effects. Both amount of sulfur in constructional mix and mobility of the mix can be increased. The values of operational properties, notably compressive strength and resistance to rutting, can also be increased. Due to consumption of industrial by-product, the environmental load decreases in regions near the oil and gas industry enterprises.

A Critical Review on the Properties and Applications of Sulfur-Based Concrete

“…In particular, in References [ 88 , 110 , 117 ], it was found that the modification of the sulfur composite with dicyclopentadiene leads to a sharp increase in chemical resistance in salt (0.90–0.98), acid (0.78–0.90) and organic (0.95–0.98) environments. Papers [ 89 , 110 , 117 , 126 , 127 ] proposed to modify the surface of the filler particles with a dressing additive (kerosene solutions of liquid rubbers). The resistance of sulfur-based concrete to various chemical environments and biological agents is given in Table 7 , the compositions of which are presented earlier, in Table 6 .…”

“…Much research has been done to increase the effectiveness of sulfur in concrete production and it has been proven that this waste has useful value for various applications [ 35 , 127 ]. In 2011, Sabour et al [ 124 ] investigated sewage pipes made of sulfur-based concrete.…”

Reasons for Reduced Moisture Resistance of Sulfur-Extended Asphalt Concrete

“…(Asphalt concrete with the addition of sulfur (technical or modified) received the name sulfur-extended asphalt concrete- SEA [ 10 ]). After cooling, crystallization of sulfur particles is observed, which increases the strength of sulfur asphalt concrete [ 11 , 12 , 13 , 14 , 15 , 16 ]. According to X-ray phase analysis, the formation of sulfur crystals is completed on the 7th day after the preparation of the material [ 17 ].…”