Abstract
This paper describes the characteristics of modified sulfur-solidified material (MSSM, hereafter). Modified sulfur works as a binder in MSSM bonding several kinds of aggregates such as blast-furnace slag, converter slag, electric-furnace slag, liquid slag and, furthermore, various seashells. MSSM, compared with the ordinary cement concrete, is highly dense, strong, abrasion-resistant, resistant to salts and acids, and has a high affinity for animate beings such as seaweed. MSSM can be used, for example, as fish banks, algal reefs and wave-dissipating blocks, and as repairing material exposed in highly acidic environment.