Sulfur-Modified Composites for Enhancement of Building Foundations S.Y. Efremova, M.I. Panfilova, N.I. Zubrev, N.A. Politaeva and A.A Goryacheva E3S Web Conf., 247 (2021) 01053 Published online: 05 April 2021 DOI: 10.1051/e3sconf/202124701053