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
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
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
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
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
RepairStructuralJefferson Street Bridge: The “Million Dollar Bridge” Listed on the National Register of Historic Places
Bill Fortuna
Read MoreDubbed the “million dollar bridge” by town residents, referring to the cost of building the structure in 1921, the Jefferson Street Bridge in Fairmount, WV, is a three-span reinforced concrete arch bridge that crosses the Monongahela River. Listed on the National Register of Historic Places,
RepairConstruction and Repair with Wet-Process Sprayed Concrete and Mortar
Chris I. Goodier and Simon A. Austin
Read MoreA technical report has just been published in the UK by the Concrete Society. This new the Department of Civil and Building Engineering at Loughborough University: Simon Austin, professor of structural engineering; Peter Robins, senior lecturer; and Chris Goodier, a former research associate at Loughborough
RepairArchitecturalInternationalArtistic Shotcrete for a Historic Auditorium
Hans Hasler, Pietro Teichert, and Dudley R. Morgan
Read MoreThe Goetheanum (Fig. 1) in Dornach, near Basel, Switzerland, was constructed in the late 1920s from a design by Austrian social philosopher and œspiritual scientist Rudolf Steiner. This building represents the first use of reinforced concrete for monumental, sculptured forms.