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Miel I Dam
The Miel I Dam, officially known as the Patángoras Dam, is a gravity dam on La Miel River just south of Norcasia in Caldas Department, Colombia. The dam was constructed between 1997 and 2002 for the primary purpose of hydroelectric power generation. At the time of its completion, the dam was the tallest roller-compacted concrete (RCC) dam in the world but was surpassed by the Longtan Dam in 2009.
==Background==
Designs for the dam were drawn up in 1992 and 1993 before bidding was carried out in December of that same year. An RCC design was chosen to reduce costs and risks associated with excavating a larger foundation for an arch dam. Funding was acquired for the project by December 1997 when construction began. The power plant was operational in 2002 and the project was completed in 59 months, seven months ahead of time. The dam is part of the Miel I Hydroelectric Station and is officially called the Patángoras Dam but is commonly referred to as the Miel I Dam.〔(【引用サイトリンク】url=http://www.isagen.com.co/metaInst_Eng.jsp?rsc=infoIn_Eng_centralMiel1 )〕
The U.S. Army Corps of Engineers was involved in the testing of the concrete for the dam. Drums of aggregates, cement, sand and soil were shipped to their North Pacific Division Materials Laboratory in Troutdale, Oregon. The materials were separated and tested for various properties. RCC concrete cylinders and beams were batched and poured. Tests were performed, for 7, 28, 90, 180 and 365 days. Tests included compressive strength, tensile strength, expansion, and slow load beams. The testing required almost 2 years to complete.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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