High strength steel fibre concrete and making method thereof
A high-strength concrete and steel fiber technology, applied in the field of concrete, can solve the problems of high compressive strength, poor toughness, and poor frost resistance, and achieve the effects of high compressive strength, large bearing capacity, and good frost resistance.
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[0008] The following are non-limiting examples of the invention:
[0009] For making steel fiber high-strength concrete manhole covers
[0010] Concrete formula (weight percent): cement 20%, fly ash 3.5%, silica fume 4.5%, water 5%, steel fiber 2.5%, sand 23%, crushed stone 34.3%, water reducer 0.25%, cold rolled ribbed Rebar 7%.
[0011] Production method: 1. Preparation of raw materials and molds for manhole covers and cover bases, and distributing steel bars in the molds of cover plates and cover bases. 2. Raw materials are prepared according to the prescribed proportions. 3. Glue materials: cement , Fly ash and silica fume are poured into the mixer for dry mixing for 2-3 minutes. 4. Then the coarse and fine aggregates, gravel and sand are poured into the mixer for dry mixing for 2-3 minutes. 5. The water reducing agent is dissolved in water. , 6. Pour the water with water reducing agent into the mixer for wet stirring for 3-5 minutes, 7. Disperse the steel fibers in the ...
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