METHOD OF DETERMINING WHETHER OR NOT RECYCLED AGGREGATE CAN BE EXPECTED TO SHOW QUALITY IMPROVEMENT EFFECT DUE TO ADSORPTION OF CARBON DIOXIDE

PROBLEM TO BE SOLVED: To provide a method which enables determining whether or not recycled aggregate can be expected to show quality improvement effects due to adsorption of carbon dioxide without measuring a mortar contamination ratio of the recycled aggregate.SOLUTION: A method of determining whe...

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Bibliographische Detailangaben
Hauptverfasser:	IYODA TAKESHI, KAMEYAMA TAKAHIRO, MATSUDA NOBUHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DISPOSAL OF SOLID WASTE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method which enables determining whether or not recycled aggregate can be expected to show quality improvement effects due to adsorption of carbon dioxide without measuring a mortar contamination ratio of the recycled aggregate.SOLUTION: A method of determining whether or not recycled aggregate can be expected to show quality improvement effects due to adsorption of carbon dioxide is characterized by using the crushing value and/or the carbon dioxide adsorption ratio of recycled aggregate as indicator. Quality improvement effects of recycled aggregate due to adsorption of carbon dioxide include a dry shrinkage reduction effect when the recycled aggregate is used in concrete. 【課題】再生骨材のモルタル混入率を測定しなくても、二酸化炭素を吸着させることによる品質改善効果が期待できる再生骨材か否かを容易に判定できる方法を提供すること。【解決手段】再生骨材の破砕値および／または二酸化炭素吸着量割合を指標にすることを特徴とする。二酸化炭素を吸着させることによる再生骨材の品質改善効果としては、再生骨材をコンクリートに用いた場合の乾燥収縮低減効果が例示される。【選択図】図３