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The invention relates to high-adhesion repair concrete for PCCP (prestressed concrete cylinder pipe) emergency repair and a preparation method of the high-adhesion repair concrete. The repairing concrete comprises two kinds of matched concrete, namely high-viscosity and high-strength concrete A directly applied to a repairing surface and high-strength concrete B applied to the surface of the high-viscosity and high-strength concrete. Wherein the high-viscosity and high-strength concrete A is prepared from the following components in parts by weight: 60 to 100 parts of cement, 6 to 10 parts of superfine steel fiber, 3 to 5 parts of polypropylene fiber, 1 to 2 parts of rubber powder, 0.5 to 2 parts of water reducing agent, 12 to 20 parts of micro silica fume, 6 to 10 parts of fly ash, 30 to 50 parts of superfine fine aggregate and 20 to 30 parts of water. The high-viscosity and high-strength concrete A with the composition can ensure that a repaired concrete structure has excellent compressive strength, breaking strength and bonding strength, and has extremely low shrinkage rate and chloride ion penetration resistance.
本申请涉及PCCP管抢修用高粘接性修复混凝土及其制备方法。修复混凝土包括两种配套使用的混凝土，分别是直接应用于修复表面的高粘高强混凝土A和应用于高粘高强混凝土表面的高强度混凝土B。其中，高粘高强混凝土A由以下重量份的各组分组成：水泥60‑100份、超细钢纤维6‑10份、聚丙烯纤维3‑5份、胶粉1‑2份、减水剂0.5‑2份、微硅灰12‑20、粉煤灰6‑10、超细细集料30‑50、水20‑30份。这种组成的高粘高强混凝土A可以确保修复的混凝土结构具有优异的抗压强度、抗折强度、粘接强度，并具有极低的收缩率和抗氯离子渗透性能。
The invention relates to high-adhesion repair concrete for PCCP (prestressed concrete cylinder pipe) emergency repair and a preparation method of the high-adhesion repair concrete. The repairing concrete comprises two kinds of matched concrete, namely high-viscosity and high-strength concrete A directly applied to a repairing surface and high-strength concrete B applied to the surface of the high-viscosity and high-strength concrete. Wherein the high-viscosity and high-strength concrete A is prepared from the following components in parts by weight: 60 to 100 parts of cement, 6 to 10 parts of superfine steel fiber, 3 to 5 parts of polypropylene fiber, 1 to 2 parts of rubber powder, 0.5 to 2 parts of water reducing agent, 12 to 20 parts of micro silica fume, 6 to 10 parts of fly ash, 30 to 50 parts of superfine fine aggregate and 20 to 30 parts of water. The high-viscosity and high-strength concrete A with the composition can ensure that a repaired concrete structure has excellent compressive strength, breaking strength and bonding strength, and has extremely low shrinkage rate and chloride ion penetration resistance.
本申请涉及PCCP管抢修用高粘接性修复混凝土及其制备方法。修复混凝土包括两种配套使用的混凝土，分别是直接应用于修复表面的高粘高强混凝土A和应用于高粘高强混凝土表面的高强度混凝土B。其中，高粘高强混凝土A由以下重量份的各组分组成：水泥60‑100份、超细钢纤维6‑10份、聚丙烯纤维3‑5份、胶粉1‑2份、减水剂0.5‑2份、微硅灰12‑20、粉煤灰6‑10、超细细集料30‑50、水20‑30份。这种组成的高粘高强混凝土A可以确保修复的混凝土结构具有优异的抗压强度、抗折强度、粘接强度，并具有极低的收缩率和抗氯离子渗透性能。
High-adhesion repair concrete for emergency repair of PCCP (prestressed concrete cylinder pipe) and preparation method of high-adhesion repair concrete
PCCP管抢修用高粘接性修复混凝土及其制备方法
MA JUN (author)
2022-04-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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