Industrial evaluation of sulfur concrete in corrosive environments
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Industrial evaluation of sulfur concrete in corrosive environments

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      "Over the past several years the Bureau of Mines has developed a sulfur concrete (SC) technology in which chemically modified sulfur is mixed with suitable mineral aggregates to produce construction materials that are resistant to corrosion by acids and salts. Modified SC materials have been tested in actual operating conditions in 50 corrosive process environments at 40 commercial plants. Sc components ranging from small test coupons to 4-ton acid sump tanks were fabricated and installed at plant locations where chemical corrosion was destroying conventional concrete materials. Through cooperative agreeements with several companies, floors, retaining walls, and foundations were cast in place using sc materials, then monitored for resistance to corrosion and retention of strength properties. After 4 years of testing there was essentially no evidence of material degradation or loss of strength. Conventional concrete materials, however, were attacked and in some cases completely destroyed under the same conditions. Minor degradation, similar to that encountered with portland cement concrete (pcc), occurred when sulfur concrete was exposed to strong alkali, hot chromic acid, and copper slimes solutions. Although long-term aging characteristics of SC materials are still being determined, already these materials are finding widespread use in metallurgical, chemical, and fertilizer processing plants." - NIOSHTIC-2

      NIOSHTIC no. 10003006

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