Fundamental Study on Manufacturing Method of Large Particle Size Porous Concrete Using Concrete Rubble and Applicability as Fishing Bank

Maegawa, Akihiro; Hatanaka, Shigemitsu; Mishima, Naoki; Yuasa, Yukihisa

doi:10.3130/aijs.70.43_2

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“…The size of the continuous voids is almost completely dependent on the size of the aggregates. Table 1 shows the classification of the aggregates used in POC based on aggregate diameter (Tamai et al 2003;Maegawa et al 2005aMaegawa et al , 2005bMaegawa et al , 2006b.…”

Section: Introductionmentioning

confidence: 99%

“…POC provides high environmental performance in terms of water permeability/drainage, air permeability, sound absorbency, tolerance to the presence of plants and other organisms, weight reduction and usability of recycled materials. Furthermore, POC can be used in a wide range of applications (Tamai et al 2003;Maegawa et al 2005aMaegawa et al , 2005bMaegawa et al , 2006b). Thus, POC can be considered an environmentally friendly concrete that facilitates environmental improvement while promoting economic growth.…”

Section: Introductionmentioning

confidence: 99%

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Fundamental Study on Properties of Small Particle Size Porous Concrete

Hatanaka

Mishima

Maegawa

et al. 2014

ACT

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In the present research, the influence of aggregate size on various characteristics (strength, permeability, water retention and water wicking) of small particle size porous concrete was examined. The properties of small particle size porous concrete using small size crushed stone (particle size: 0.6-1.2, 1.2-2.5 mm) were compared with those of ordinary porous concrete using ordinary size crushed stone (5-13 mm). According to the test results, compressive strength of porous concrete was not influenced to a significant degree by aggregate size, while flexural strength became higher with decreasing particle size. Also, it was shown that small particle size porous concrete is superior in water retention and wicking compared to ordinary particle size porous concrete. It should be noted, however, that permeability of small particle size porous concrete was rather low. Further, clarifying the configuration of voids in the porous concrete is essential for the quantitative discussion on the behaviors of water in porous concrete.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%