RepairArchitecturalStructuralWashington State’s Capitol Seismic Repair
Marcus von der Hofen
Read MoreWashington State’s Capitol Seismic Upgrade will surely rank as one of the top restoration projects of this decade and shotcrete proved to be essential to its success. As with most complex rehabilitations, many of the hurdles faced arose after the project had begun. The ability
RepairArchitecturalShotcrete Foundation Walls at the Smithsonian Portrait Gallery in Washington, DC
Howard L. Robbins
Read MoreThe National Portrait Gallery, located on the campus of the Smithsonian Institution in Washington DC, is one of the oldest government buildings in that historic city. It was the original location for the U.S. Patent Office and it was used as the site of the
RepairStructuralThick Section overhead Repair and Strengthening of a Concrete Pier: A Viable Shotcrete Solution
Roger Runacres
Read MoreWhen considering placement options for thick section overhead concrete repair or strengthening, more often than not, the consideration of a shotcrete solution is overlooked. Historically, shotcrete has suffered from being mainly associated with vertical placements for above ground work. This may be due to the
RepairConcrete Repair and Restoration at Franklin Falls Dam
David Jamieson and Joseph Colucci
Read MoreThe Aulson Company of Methuen, MA, completed a major concrete removal, shotcrete repair, and restoration project for the U.S. Army Corps of Engineers (USACE) at the Franklin Falls Dam, a 60-year-old structure in Franklin, NH. The Franklin Falls Dam was built by the USACE as
RepairShotcrete Repair of WWII Concrete Hulks
Neil McAskill and Roland Heere
Read MoreIn response to a shortage of plate steel during the Second World War, the United States Maritime Commission ordered 24 ships and 58 barges to be constructed with lightweight concrete. The ships were typically about 336 ft (110 m) long with a beam of 54
RepairStructuralThe Setenave Dry Docks Rehabilitation
Ivan Ramalho de Almeida, Thomaz José Ripper Barbosa Cordeiro, and José Paulo Veríssimo Maia Costa
Read MoreSentenave is ageneral designation for a shipyard built in the ninty seventies at the right end of Portugal
RepairWaterproofing and Concrete Restoration at Blackwater Dam
David Jamieson
Read MoreOne of the oldest dams in New England, the Blackwater Dam in Webster, NH, is located approximately 8.6 mi above the confluence of the Blackwater and Contoocook Rivers. It is part of a network of ï¬ve flood-control dams in the Merrimack River Basin that work
RepairUndergroundStructuralSilica Fume in Shotcrete
John Wolsiefer, Sr., and Dudley R. Morgan
Read MoreSilica fume is a highly pozzolanic mineral admixture that has been used mainly to improve concrete durability and strength and as portland cement replacement. Silica fume has been used primarily in the United States, Canada, and the Scandinavian countries, but is now finding increasing use
RepairStructuralArchitectural Finishes for Retaining Walls
Marcus H. von der Hofen
Read MoreWhat kind of architectural ï¬nishes are possible with shotcrete? From the most basic natural gun ï¬nish to exotic carved sculptures, from the gray color of regular portland cement concrete to custom-colored and stained mixtures, shotcrete can take on many different types of ï¬nished appearance. Today™s
RepairStructuralShotcrete Repair Saves Baltimore Bridges
I. Leon Glassgold
Read MoreThis Shotcrete Classic was selected for reader interest. While ï¬rst published 23 years ago, most of the dry-mix shotcrete technology described for repair of bridges still remains relevant today. There are a few areas where things have changed. Small line wet-mix shotcrete equipment is now