A grout material for repairing or thickening a concrete structure, and an alkali aggregate reaction prevention construction method using the grout material

摘要

PPROBLEM TO BE SOLVED: To provide a grouting material which is capable of effectively suppressing an alkali aggregate reaction, is effective for repair and thickness increase of the concrete structure deteriorated by the alkali aggregate reaction, is satisfactory in construction property in spite of a large area, has excellent workability, is capable of effectively suppressing the alkali aggregate reaction of the concrete structure, and is used for the repair or thickness increase of the concrete structure, and a construction method for alkali aggregate reaction prevention using the grouting material. PSOLUTION: The grouting material contains portland cement, blast furnace slag fine powder, naphthalenesulfonic acid-based water-reducing agent, and melamine-based water-reducing agent, lithium nitrite, and aggregate in order to suppress the deterioration with lapse of time due to the alkali aggregate reaction of the concrete structure, to impart high strength to the concrete structure, and to impart durability. PCOPYRIGHT: (C)2007,JPO&INPIT