Fiber reinforced high-strength mortar used for concrete structure repair
A concrete structure, fiber reinforced technology, applied in the field of building materials, can solve the problems of high environmental conditions, complex construction process, large building area, etc., to achieve the effect of convenient construction, environmental protection, and cost reduction
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Embodiment 1
[0018] The fiber-reinforced high-strength mortar is composed of 1 part of PII-42.5 Portland cement, 0.2 part of ground blast furnace slag powder, 0.2 part of silica fume, 0.02 part of steel fiber, 0.012 part of polycarboxylate superplasticizer and 1.5 part of sand. Add 0.2 parts of water at the construction site or concrete mixing station and mix evenly, then manually pave or pump to form a smooth repair layer, and keep it moist for 5-7 days.
Embodiment 2
[0020] The fiber-reinforced high-strength mortar is composed of 1 part of PO-42.5 Portland cement, 0.25 part of silica fume, 0.15 part of fly ash, 0.15 part of limestone powder, 0.025 part of steel fiber, 0.013 part of polycarboxylate superplasticizer, and 1.5 part of sand. . Add 0.17 parts of water at the construction site or concrete mixing station, mix evenly, and carry out construction by manual paving or pumping to form a flat repair layer, moisturizing and curing for 5 to 7 days.
Embodiment 3
[0022] The fiber-reinforced high-strength mortar is composed of 1 part of PO-42.5 portland cement, 0.23 part of silica fume, 0.01 part of steel fiber, 0.01 part of polycarboxylate superplasticizer, and 1.3 parts of sand. Add 0.2 parts of water to the concrete mixing station and mix evenly, transport it to the site with a concrete truck, pump it to the top of the bridge, and form a 20-30mm thick area of more than 100m in a self-leveling manner 2 The flat repair layer, moisturizing and curing for 5-7 days, its compressive strength exceeds 100MPa.
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