Portland limestone

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portland stone, Portland limestone

An oölitic limestone which is quarried on the Isle of Portland, off the coast of England; widely used as a building stone in London.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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"It can be concluded that, from the results of this laboratory study, portland limestone cement can be used in conjunction with [the] 0AG technique to reduce the use of ordinary portland cement, and improve the performance of concrete in pavement application," they conclude.
Siebel, "Assessment of the suitability of limestone for producing portland limestone cement (PKZ)," Zement-Kalk-Gips, vol.
On the contrary, in 2002-2003 the corrosion loss of zinc (Reiss and Faller, 2007) and in 2005-2006 the loss of Portland limestone increased at Lahemaa.
Many published papers have reported poor durability behavior of Portland limestone cements containing limestone more than 5%.
Portland limestone, which was used to build St Paul's Cathedral and Buckingham Palace, is still quarried here and its history is covered in an exhibition at Portland Museum.
Mr Walls is creating a sculpture representing two swirling figures from a four-ton slab of Portland limestone.
Ohorongo Cement currently offers rapid hardening Portland Limestone Cement of two strengths, namely 32.5 and 42.5 and most local retailers are now stocking the new brand.
The company's current range of products include 'Classic' - the ordinary Portland cement, 'Flexi' - the Portland limestone cement, and GGBS - ground granulated blast-furnace slag cement.
Its broad range of products is suitable for ready mix and precast players, individual customers and architects and include Portland cement, Portland limestone cement, and ground granulated blast-furnace.
Liverpool's a hot-spot for fossilspotters because of the liberal use of Portland limestone by town planners 150 years ago.
The recent European Standard EN 197 identifies two types of Portland limestone cements (PLC): Type II/A-L containing 6-20% and Type II/B-L containing 21-35%.

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