WATERPROOF REPAIR METHOD FOR CONCRETE FLOOR SLAB

• Main Authors: MATSUSHITA REINA, TANIGUCHI SATOSHI, NISHIOKA TSUTOMU, KOSAKA TAKASHI, AOKI YASUMOTO, TAMURA SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 29.10.2020
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; FIXED CONSTRUCTIONS; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; OR VIADUCTS

To provide a waterproof repair method for a concrete floor slab that can reliably exhibit a waterproof function by substantially smoothing an uneven layer surface of a first waterproof layer with an impregnated waterproof powder-liquid agent.SOLUTION: The waterproof repair method for the concrete floor slab includes: a pavement removal step of removing an existing pavement Y from a concrete floor slab; an impregnated waterproofing liquid agent application step of applying an impregnated waterproofing liquid agent containing an epoxy resin to an uneven surface of the floor slab to form a first waterproofing layer on an uneven layer surface; an impregnated waterproofing powder-liquid application step of applying an impregnated waterproofing powder-liquid agent that is a mixture of a liquid component containing an epoxy resin and a powder component to the uneven layer surface of the first waterproofing layer to form a second waterproof layer that makes the uneven layer surface substantially smooth; a coating film waterproofing agent application step of applying an asphalt coating film waterproofing agent to a layer surface of the second waterproofing layer to form a coating film waterproofing layer; a silica sand spraying step of spraying silica sand on the coating film waterproofing layer to form a silica sand layer; and a paving step of depositing an asphalt compound on the silica sand layer to form an asphalt pavement layer.SELECTED DRAWING: Figure 7 【課題】 本発明は、第１防水層の凹凸層表面を含浸防水粉液剤にて略平滑にすることで、確実に防水機能を発揮できるコンクリート床版の防水補修方法を提供する。【解決手段】 本発明は、コンクリート床版から既設舗装Ｙを撤去する舗装撤去工程と、凹凸形状の床版表面にエポキシ樹脂を含有する含浸防水液剤を塗布して、凹凸層表平面の第１防水層を形成する含浸防水液剤塗布工程と、第１防水層の凹凸層表面にエポキシ樹脂を含有する液体成分及び粉体成分を混合した含浸防水粉液剤を塗布して、凹凸層表面を略平滑にする第２防水層を形成する含浸防水粉液剤塗布工程と、第２防水層の層表面にアスファルト塗膜防水剤を塗布して、塗膜防水層を形成する塗膜防水剤塗布工程と、塗膜防水層に珪砂を散布して、珪砂層を形成する珪砂散布工程と、珪砂層にアスファルト化合物を積層して、アスファルト舗装層を形成する舗装工程とを含んでなる。【選択図】 図７