Lei Guo1,2,3, Zi Guan1, Lixia Guo1,2,3,*, Weiping Shen1, Zhilong Xue1, Pingping Chen1, Mingru Li1
Journal of Renewable Materials, Vol.8, No.12, pp. 1711-1727, 2020, DOI:10.32604/jrm.2020.013415
Abstract A recycled aggregate (RA) was prepared by crushing and sieving
demolished discarded concrete pavements and was subsequently tested and analyzed to determine its various physical properties. On this basis, pervious concrete
(PC) mix proportions were designed. Coarse RA particles with sizes of 5–10 and
10–20 mm were selected. Concrete specimens were prepared with a water–cement
ratio of 0.3, an aggregate–cement ratio of 4.5, the substitute rates of RA with 0,
25%, 50%, 75% and a single-/double-gap-graded RA mix (mass ratio of particles
with sizes of 5–10 mm to particles with sizes of 10–20 mm: 1:1, 1:2, 2:1, 2:3 and
3:2).… More >
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