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Otta Seal
Otta seal is a type of bituminous surface treatment that was developed by the Norwegian Road Research Laboratory (NRRL). Its name is based on the location in which it was created, the Otta Valley. Otta seal was developed to be used as a temporary surfacing on new roads; however, after seeing its strength, it has been used as permanent roads as well. Composition and application Otta seal is formed by adding graded aggregate to a soft bituminous binding agent. The agent is usually emulsified asphalt. Bituminous binder application rates are between 1.9 liter/m2 (0.42 US gallon/yard2) and 2.4 liter/m2 (0.53 US gallon/yard2) – the value is dependent on aggregate gradation and type. Low quality, local aggregates are often used in Otta seal. The largest aggregate size used is between 13 and 25mm (0.5 and 1 inch). The aggregate can contain up to 10% fine gravels. Aggregate quantities are usually close to 27 kg/m2 (50 lbs/yard2). Otta seal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otta Valley
Ottadalen ( en, Otta Valley) is a valley in the municipalities of Skjåk, Lom, Vågå, and Sel in Innlandet county, Norway. The valley is one of the side valleys that branch off of the large Gudbrandsdalen valley. It lies on the northern edge of Jotunheimen National Park. Historically, the Ottadalen has been widely used as a transportation artery between western and eastern Norway through the Breidalen valley in Skjåk to Stryn, through the Breidalskrysset to Stranda, along the Jostedalsbreen glacier to the Jostedalen valley and Luster, and across the Sognefjellet to Sogn. There is also a road from Vågå, through Jotunheimen to Fagernes. The Otta River flows through the valley. The Otta River begins in the municipality of Skjåk and flows into lake Vågåvatnet. Exiting Vågåvatnet at Vågåmo, it continues its journey through the valley, leaving the municipality of Vågå to meet the Gudbrandsdalslågen river at the town of Otta in the municipality of Sel. Reinheim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |