Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6725913 | Construction and Building Materials | 2013 | 7 Pages |
Abstract
In this study, the use of lightweight aggregate (LWA) for making lightweight pervious concrete (LWPC) was presented. Diatomite (DA) and pumice (PA) were used as natural LWAs in pervious concretes. Three cement paste contents of 15%, 20%, and 25% by volume were used. The results were compared to those of LWPC containing recycled LWA from autoclaved aerated concrete (RA). The results indicated that the use of DA, PA, and RA as coarse aggregates in pervious concrete could reduce the density and thermal conductivity about 3-4 times compared with pervious concrete containing natural aggregate. The densities were 558-775Â kg/m3 which were lower than 800Â kg/m3 and suited for use as insulating concrete. The 28-day compressive strengths of LWPCs ranged from 2.47 to 5.99Â MPa. The increase in cement paste content improved the mechanical properties of LWPCs. LWPC containing DA showed higher mechanical properties and a lower thermal conductivity than those of RA and PA. However PA exhibited higher water permeability.
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Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Yuwadee Zaetang, Ampol Wongsa, Vanchai Sata, Prinya Chindaprasirt,