OBAYASHI CORPORATION Patent applications |
Patent application number | Title | Published |
20140202358 | Seawater-Mixed Concrete, Concrete Structure Constructed with the Same, and Design Method of Concrete Structure Constructed with Seawater-Mixed Concrete - The present invention relates to concrete with necessary durability using seawater and sea sand. The seawater mixed concrete of the present invention is obtained by mixing a mixture including slag-containing cement and sea sand, with seawater. And by including a nitrite-based admixture and pozzolan, the diffusion coefficient of concrete after hardening can be reduced to restrain the external intrusion of harmful factors. Further, the concrete structure according to the present invention can include seawater mixed concrete and reinforcement for increasing tensile strength. | 07-24-2014 |
20130213274 | CEMENT COMPOSITION, METHOD FOR PRODUCING MIXED MATERIAL, AND METHOD FOR PRODUCING CEMENT COMPOSITION - The present invention provides cement composition including 100 parts by weight of binder (B) including, 5-30 parts by weight of cement, 0-20 parts by weight of silica fume, 0-50 parts by weight of fly ash, and 42-75 parts by weight of blast furnace slag; water (W) equivalent to 80-185 kg/m | 08-22-2013 |
20130089661 | WATERPROOFING AGENT FOR WATERPROOF SHEET REPAIR METHOD - A waterproofing agent for repairing a damaged portion of a waterproof sheet spread on the ground, the waterproofing agent being a urethane-based waterproofing agent obtained by mixing a primary agent containing an isocyanate component and a curing agent containing a polyester polyol obtained from castor oil and a plasticizing agent component. | 04-11-2013 |
20120156503 | SEAWATER-MIXED CONCRETE, CONCRETE STRUCTURE CONSTRUCTED WITH THE SAME, AND DESIGN METHOD OF CONCRETE STRUCTURE CONSTRUCTED WITH SEAWATER-MIXED CONCRETE - The present invention relates to concrete with necessary durability using seawater and sea sand. The seawater mixed concrete of the present invention is obtained by mixing a mixture including slag-containing cement and sea sand, with seawater. And by including a nitrite-based admixture and pozzolan, the diffusion coefficient of concrete after hardening can be reduced to restrain the external intrusion of harmful factors. Further, the concrete structure according to the present invention can include seawater mixed concrete and reinforcement for increasing tensile strength. | 06-21-2012 |