Steel fiber self-compacting concrete and preparation method thereof and prefabricated component
A self-compacting concrete and steel fiber technology, which is applied in the field of building materials, can solve the problems of small increase in compressive strength and no improvement, and achieve good compaction, reduce wear and increase degrees of freedom.
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[0101] (1) Prepare raw materials:
[0102] Magnetic beads: iron oxide body after strong magnetic treatment, the particle size is 2~5mm.
[0103] Cement: P O42.5 ordinary Portland cement, apparent density is 3.10g / cm 3 .
[0104] Fly ash: Class I fly ash, apparent density 2.04g / cm 3 .
[0105] Sand: medium sand with a fineness modulus of 2.36 and an apparent density of 2.65g / cm 3 , bulk density is 1.45g / cm 3 , with a moisture content of 0.4%.
[0106] Natural Coarse Aggregate: Crushed stone with continuous particle size of 5~20mm, the apparent density is 2.75g / cm 3 , bulk density is 1.35g / cm 3 , The water absorption rate is 0.45%.
[0107] Short steel fiber: diameter is 0.06cm, length is 0.6~1.8cm, the shape can be straight steel fiber (a), prismatic steel fiber (b), corrugated steel fiber (c), hook steel fiber ( d / e), large head-shaped steel fibers (f), double-pointed steel fibers (g), bundled steel fibers (h), etc., were purchased from the market.
[0108] Non-metal...
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