Water absorption and retention of porous ceramics fabricated by waste resources

Abstract

Several counter measures have been carried out for mitigating heat island effect. One of those is installing on top of the roof with base materials having planted vegetation. The base materials are required good water absorption and retention which is necessary for the plant to survive. Therefore, in this study, we investigate the relationship between water absorption and water retention within the pore structures of porous ceramics. The raw materials of the ceramics were used waste resources. The structures were changed by different state foaming additive. It was found that the water absorption was dependent on open porosity and the pore size. The water retention, was reduced excessively with high porosity. Accordingly, the control of pore structure is described in details in this study.

Water Retention Characteristics of Porous Ceramics Produced from Waste Diatomite and Coal Fly Ash

“…A quick thermal conductivity meter based on ASTM C 1113-90 hot-wire method was used (ASTM C 1113-90) [24].…”

Porous Ceramic Characteristics Sintered from Waste Diatomite and Sodium Silicate Sand

“…Release of the absorbed water was evaluated in an atmosphere with the relative humidity controlled at 55% using a saturated Mg(NO 3 ) 2 .6H 2 O solution. The water release rate was then evaluated from the time at which half the absorbed water was lost (t 1/2 (h)) [5].…”

“…A rational theory of sintering should predict the routes of production of the required structure of a sintered body in order to provide its physico-chemical and physico-mechanical properties which are determined by this structure [4]. Water absorption and retention of porous ceramics as building materials are characterized by their permanence, heat insulation [5] and water retention. This study demonstrates the feasibility of producing water absorption and retention of porous ceramic monoliths from diatomite and sodium silicate sand.…”

Fabrication of Porous Ceramic-Geopolymer Based Material to Improve Water Absorption and Retention in Construction Materials: A Review

“…These materials need-ed permanence, weathering resistance and low density. Because, in many cases, it is difficult to change constructed materials [1]. Ceramic tiles as building materials have the advantages of permanence, weather resistance and decoration.…”

“…It is because of not only lightweight and high machinability but also heat insulation, sound absorption, and others. In addition, water is absorbed and retained into the pore [1]. Porous ceramic have attracted many researcher to tailor the propeties for construction industries.…”