http://mob.aggregatereseach.com/ Construction Aggregate, Asphalt and Concrete News Copyright 2002-2008 ARI-C RSSviaXmlTextWriter v1.0 Bede Meredith - NoSpam.Bede@Aggregatereseach.com.com 60 http://mob.aggregateresearch.com/article.aspx?src=rss&id=18605 Aggregate Industries' two largest pension schemes have entered into insurance transactions to transfer risk to Pension Insurance Corporation (PIC), a provider of risk management solutions to defined-benefit pension funds. Fri, 12 Mar 2010 01:27:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18606 afarge Cement WAPCO, the Nigerian unit of the world's biggest cement maker, said on Thursday its 2009 pre-tax profit fell 30 percent to 8.96 billion naira from the previous year. Fri, 12 Mar 2010 01:32:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18607 Not all equity analysts agree with producer Lafarge's hopes of a slow 5% recovery; instead, they see cement demand as flat. Fri, 12 Mar 2010 01:38:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18608 Companies across Europe are hoarding permits to produce greenhouse gas emissions worth hundreds of millions of pounds, the Guardian can reveal. Fri, 12 Mar 2010 01:43:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18609 Italian cement maker Italcementi is expected to launch on Monday a six to 10-year bond of between 750 million euros ($1 billion) and 1 billion, sources close to the operation said on Thursday Fri, 12 Mar 2010 01:50:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18612 (Pa) -- In the midst of a fight over plans to expand a quarry, Richmond Township supervisors are holding a series of closed-door meetings with the parties involved. Fri, 12 Mar 2010 02:00:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18613 AZUSA - After a marathon hearing which ended early Thursday with the Planning Commission recomending approval for a new mining plan, opponents said they will continue to fight to proposal. Fri, 12 Mar 2010 02:07:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18614 Martin Marietta Materials Inc. (MLM) released its earnings announcement on 02/09. The company reported a change in quarter-over-quarter sales of -20.36% and posted an EPS (trailing twelve months) of 1.90. Fri, 12 Mar 2010 02:15:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18615 There’s been a stir in the British construction industry lately over the development of a new building material that holds out the promise of greatly reducing cement use while delivering high fire ratings and great load-bearing strength. Fri, 12 Mar 2010 03:54:00 GMT http://mob.aggregateresearch.com/article.aspx?src=rss&id=18616 Pervious concrete typically comprises a zero slump mixture with little to no fine aggregate and uniformly graded coarse aggregate. The workability of such mixtures can be highly sensitive to variations in moisture content and compaction effort, leading to large variations in the final void contents for a given pavement project. Research and experience have shown that pervious concrete mixtures proportioned to have 15 to 25% air void contents should have sufficient infiltration rates to limit storm water surface runoff and adequate strength to avoid raveling. Until recently, however, there were no U.S. standards for the verification of air void content in fresh concrete or infiltration rates for in-place concrete. To help producers, contractors, and owners verify that their pavement projects will perform as needed, ASTM Committee C09.49, Pervious Concrete, has recently introduced Standard C1688, "Standard Test Method for Density and Void Content of Pervious Concrete" and Standard C1701, "Standard Test Method for Infiltration Rate of Pervious Concrete." These standards were used as part of the quality assurance program for the construction of a parking lot at the Metropolitan Community College (MCC) in Omaha, NE. Using test placements to develop a compaction-density relationship, appropriate mixture properties could be defined without guesswork. Workability tests and unit weight tests per ASTM C1688 were used to screen loads to ensure that we placed only workable concrete that could be consolidated to achieve a target air void content. Fri, 12 Mar 2010 02:53:00 GMT