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This study was carried out to develop a new process for the manufacture of porous glass, to search a domestic organic material as a suitable substrate for the expensive moss peat and coin and to develop an artificial soil as a suitable substitute for perlite for the greening of artificial ground. The porous glass was produced by steps of mixing wasted fine-grained glass powder with foaming agent and pigment [glass powder : foaming agent : pigment (w/w/w) = 100 : 1-2 : 1 ] and heating the mixture at a temperate from 750℃ to 850℃ (6-8℃·min^(-1)). The bulk density of crushed porous glass was 0.43 g·㎝^(-3). The saturated hydraulic conductivity was very high, but the water holding capacity, canon exchange capacity (CEC), and the nutrient contents were low. The bulk density of bark was 0.30-0.39 g·㎝^(-3). The saturated hydraulic conductivity, the water holding capacity, CEC, and the nutrient contents were high. The physicochemical properties of bark remained satisfactory after a 11-month incubation period. Crushed porous glass was mixed with bark in volumetric basis of 8 : 2, 7 : 3, 6 : 4, and 5 : 5 to determine the optimum ratio. And, the mixtures were compared to mineral soil, perlite small grain, and perlite large grain. As a result, 6 : 4 ratio of crushed porous glass to bark was thought to be optimum ratio, which is superior to mineral soil, perlite small grain, and perlite large grain. This mixture might be available and be a cost-effective substitute for perlite as an artificial soil for greening artificial ground.
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