[ 17 ] illustrated through tests that when using pressure molding methods, the strength of permeable concrete increases and then decreases with increasing pressure, while when using vibratory molding, the strength of permeable concrete shows an increasing trend with increasing shaking time.
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Experimental Study on the Mechanical Properties and Influencing Factors of Glass Fiber-Reinforced Permeable Concrete.
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The sentences
As can be seen in Figure 20 , with the increase in fiber content and parameter length, the porosity shows a decreasing trend.