Potential of Foamed Waste Glass Material as Molding for Roof Planting

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  • 廃ガラス発泡資材の屋上緑化用軽量培土としての利用の可能性
  • ハイガラス ハッポウ シザイ ノ オクジョウ リョッカヨウ ケイリョウ バイド ト シテ ノ リヨウ ノ カノウセイ

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The potential of foamed waste glass material as molding for roof planting was assessed using Zoysia matrella, which is often planted for roof planting, as the specimen. The foamed waste glass material, which is composed of 20% lime (CaO) , was initially considered to impede the growth of plants due to its soil compaction effect and alkaline property. However, the soil hardness of a degree that can act as a barrier to growth was not observed, and the pH (H2O) of the soil was confirmed to decrease with the eluviation of the soil due to time passage. This experiment revealed that the growth form of Zoysia matrella was compact (i. e., the plant length was small), when the glass material was used as lightweight molding. This is a rather favorable condition for maintenance.

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