EXPANDABLE COMPOSITION AND CRUSHING AGENT CONTAINING THE COMPOSITION

PROBLEM TO BE SOLVED: To provide an expandable composition which can develop a high expansion pressure stably in a wide temperature range and in a short time and a crushing agent which is suitable for static crushing to be completed within three hours from the start of construction, can be used in a...

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Bibliographische Detailangaben
Hauptverfasser: ASAMI MAKOTO, UCHIDA SHUNICHIRO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an expandable composition which can develop a high expansion pressure stably in a wide temperature range and in a short time and a crushing agent which is suitable for static crushing to be completed within three hours from the start of construction, can be used in a wide temperature range, and is not ejected from a packing hole when injected/packed. SOLUTION: In the expandable composition, at least two kinds of clinkers distinguished by the difference in the amount of produced free calcined lime are mixed. Part of each clinker is passed through a weathering ripening process. The weight ratio of the content of the clinker (α) which passed through the process to the content of the clinker (β) which did not pass through the process is expressed by α/β=1/1.5-3.5. COPYRIGHT: (C)2004,JPO&NCIPI