Study on Mechanical Properties of Hybrid Polypropylene-Steel Fiber RPC and Computational Method of Fiber Content.

According to the results, you can see that the porosity of the 0–4 μm is more, with the increase of steel fiber dosage, 0–4 μm of pore ratio first decreases and the trend of increase, steel fiber content was 1.75% of the minimum, and less than 4 μm pore, with the increase of steel fiber content, greater than 4 μm of pore ratio showed a trend of decrease after the first increase and steel fiber content with 1.75% proportion is the largest.

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