Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant sleeve grouting material for steel bar connection and preparation method thereof
The invention particularly relates to a high-temperature-resistant sleeve grouting material for steel bar connection, which comprises a component A and a component B. The component A comprises 20-30%of Portland cement, 3-5% of high-alumina cement, 2-3% of S95 mineral powder, 1-2% of silica fume, 5-10% of fly ash, 5-10% of quartz sand fine powder, 0.5-1% of expanding agent, 1-2% of copolyoxymethylene fiber, 20-30% of magnesite fine aggregate with a fineness modulus of 2.7, and 10-20% of blast furnace steel slag fine aggregate subjected to high-temperature autoclaving treatment, and the like. The component B comprises the following components in percentage by weight: 4-10% of water, 0.01-0.02% of graphene oxide, 2-3% of polycarboxylic acid water reducing agent mother liquor, 1-2% of polycarboxylic acid slump retaining mother liquor, 0.03-0.1% of air entraining agent and 0.03-0.1% of defoaming agent. The sleeve grouting material forms a steam dissipation channel in the grouting sleeve and maintains high mechanical properties, so that structural burst of a steel bar connecting joint is avoided, and secondary disasters can be avoided.
本发明具体涉及一种钢筋连接用耐高温套筒灌浆料，所述钢筋连接用耐高温套筒灌浆料包括：A组分：硅酸盐水泥20～30％，高铝水泥3～5％，S95矿粉2～3％，硅灰1～2％，粉煤灰5～10％，石英砂磨细粉5～10％，膨胀剂0.5～1％，共聚甲醛纤维1～2％，细度模数2.7的镁砂细集料20～30％，高温蒸压处理后的高炉钢渣细集料10～20％等。B组分：水4～10％，氧化石墨烯0.01～0.02％，聚羧酸减水剂母液2～3％，聚羧酸保坍母液1～2％，引气剂0.03～0.1％，消泡剂0.03～0.1％。套筒灌浆料在灌浆套筒内形成蒸汽逸散通道和保持较高的力学性能，避免钢筋连接节点的结构爆裂，可避免次生灾害。
High-temperature-resistant sleeve grouting material for steel bar connection and preparation method thereof
The invention particularly relates to a high-temperature-resistant sleeve grouting material for steel bar connection, which comprises a component A and a component B. The component A comprises 20-30%of Portland cement, 3-5% of high-alumina cement, 2-3% of S95 mineral powder, 1-2% of silica fume, 5-10% of fly ash, 5-10% of quartz sand fine powder, 0.5-1% of expanding agent, 1-2% of copolyoxymethylene fiber, 20-30% of magnesite fine aggregate with a fineness modulus of 2.7, and 10-20% of blast furnace steel slag fine aggregate subjected to high-temperature autoclaving treatment, and the like. The component B comprises the following components in percentage by weight: 4-10% of water, 0.01-0.02% of graphene oxide, 2-3% of polycarboxylic acid water reducing agent mother liquor, 1-2% of polycarboxylic acid slump retaining mother liquor, 0.03-0.1% of air entraining agent and 0.03-0.1% of defoaming agent. The sleeve grouting material forms a steam dissipation channel in the grouting sleeve and maintains high mechanical properties, so that structural burst of a steel bar connecting joint is avoided, and secondary disasters can be avoided.
本发明具体涉及一种钢筋连接用耐高温套筒灌浆料，所述钢筋连接用耐高温套筒灌浆料包括：A组分：硅酸盐水泥20～30％，高铝水泥3～5％，S95矿粉2～3％，硅灰1～2％，粉煤灰5～10％，石英砂磨细粉5～10％，膨胀剂0.5～1％，共聚甲醛纤维1～2％，细度模数2.7的镁砂细集料20～30％，高温蒸压处理后的高炉钢渣细集料10～20％等。B组分：水4～10％，氧化石墨烯0.01～0.02％，聚羧酸减水剂母液2～3％，聚羧酸保坍母液1～2％，引气剂0.03～0.1％，消泡剂0.03～0.1％。套筒灌浆料在灌浆套筒内形成蒸汽逸散通道和保持较高的力学性能，避免钢筋连接节点的结构爆裂，可避免次生灾害。
High-temperature-resistant sleeve grouting material for steel bar connection and preparation method thereof
一种钢筋连接用耐高温套筒灌浆料及其制备方法
CHEN PEIBIAO (Autor:in) / LIU GANG (Autor:in) / ZHANG DACAI (Autor:in) / HUO JIN (Autor:in) / ZHU WEIDONG (Autor:in) / JIN WANGZHOU (Autor:in) / LIU WANPING (Autor:in)
22.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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