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The article presents information on Agilia Blockfill self-consolidating grout, by Lafarge Corp., which is for use in partially grouted and solid-grouted walls. The grout is capable of flowing both vertically and horizontally under its own weight, and has a lower water/cement ratio and significantly reduced shrinkage compared to conventional masonry grout. Ductal composite, also from Lafarge, is significantly stronger than normal concrete.

The article discusses Stockholm City Line railway tunnel project in Stockholm, Sweden. Topics include tunneling work in the project, civil works in the project and project budget. Other topics such as engineering, team work and project planning are also mentioned. Grouting, excavation and new railway stations in the city are also discussed.

The article focuses on the use of a novel back-fill grouting system for the tunneling work at the Legacy Way project on Brisbane, Queensland. Topics covered include the components of the injection backfilling system and the advantages of using the two-component grout in minimizing ground movements and its locking the ring in its design position to ensure uniform pressure distribution.

The article evaluates several construction products and equipment including the two scraper blades and a grout-removal tool for the Sawzall and Hackzall Recip Saws from Milwaukee Electric Tool, the UltraGrind Concrete Grinding Machine from Aztec Products Inc., and the LightSource Compact portable light tower from Doosan Infracore Portable Power.

The article offers information on the construction of jet-grout columns and precast structural elements under the Elliott Bay Seawall Project in Seattle, Washington. It mentions views of Lorelei Williams, capital projects manager for Seattle, on the starting of construction with utility relocations and moving of roadways in 2013 and building physical wall in 2014. It discusses replacing the old wall made up of concrete supported by landfill and timber piles due to seismic vulnerability.

The article presents information on a new method that has been developed for pregrouted baseplates. This new method uses a low-viscosity, high-strength epoxy grout system that greatly reduces foundation preparation, grout form construction, crew size and the amount of epoxy grout used for the final pour. The benefits of using a pregrouted baseplate with the new installation method can be clearly seen when field installation costs are compared. This comparison applies realistic labor costs. It does not take credit for eliminating repair costs associated with field installation problems, such as void repair and field machining.

Reports that the United States Congress supports the plan of the Department of Energy to grout and leave radioactive tank sludge at former nuclear weapons sites. Amendment added to the defense authorization bill about the disposal of high-level radioactive waste; Disposal of wastes at the Hanford Reservation in Washington, South Carolina Savannah River Site and Idaho National Engineering & Environmental Laboratory; Natural Resources Defense Council's opposition to the grouting approach.

The article highlights the application of jet-grouting technique to upgrade the Victoria station of the London Underground in England in a bid to ease passenger congestion. Details of the trial columns used for the jet grouting project are given. The use of three-dimensional (3D) modeling, borehole surveys, as-built review and building information modeling (BIM) to manage construction challenges and risks is discussed.

Deals with the environmental legislation introduced by the European Commission that could ban grouting and similar construction techniques because of risk to groundwater. Implication of the legislation for the construction industry; Aim of the legislation; Views of federation officials on the legislation; Chemicals used in treating permeable ground.

Features the report entitled `Reliable Grouting Methods for Major Rotating Equipment,' by Tom Priest of Koch Corrosion Control Co. of Houston, Texas. Importance of properly grouting machinery foundations.

A simple nozzle, fabricated from lengths of standard pipe, permits the simultaneous injection of liquid sodium silicate and grouting materials. The nozzle has an outer annular passage for the silicate and an inner central passage for the cement-based grout. Reacting with the calcium of the cement, the sodium silicate forms a rapid-setting, rapid-hardening gel coating around the deposited grout material. This gel coating or sheath has enough strength to prevent displacement of the grout by flow of moving water and acts to restrict outward flow of the grout. Both the process and nozzle are patented developments of the Industrial Chemicals Div., The PQ Corp. They grew out of a program undertaken at the request of the Office of Surface Mining, Reclamation and Enforcement.

The article offer information on the failure of the compressor in which the cylinders and pistons was powered by the crankshaft. It mentions that the failure due to the distortion in center bearings , the emergence of the crack on each cycle which increases on every cycle and the frames used the longer engines distorted due to the lack of support. Also mentioned is that the repair of compressor include the installation of grouting, main bearings and replacement of broken crankshafts.

The article reports on the discovery of buckling of pavement during a grouting engineering work at the old tunnels underneath the Kennedy Expressway in Chicago, Illinois on October 14, 2009. It details the 9.3 million U.S. dollars grouting project commissioned to Lorig Construction. In response to the accident, the Illinois Department of Transportation (IDOT), has reportedly launched an investigation. Also noted are the measures taken by both IDOT and Lorig to address the issue.

The article reports that Cameco Corp. has outlined its plans for the restoration of access to its Cigar Lake uranium mine in northern Saskatchewan. The uranium mine was flooded after a rock fall on October 32, 2006. The plans include drilling from the surface and isolating the source of the inflow from the underground workings with the use of freezing or grouting techniques. Also, a statement has been issued by Cameco Corp. about the possible revision of the classification of the reserves in Cigar Lake to resources.

This article reports that manufacturer announces a structural grouting system especially designed for the repair of bridge and pier stanchions. The new Pile Jacket Grout system is an epoxy grout. It can be installed under water and used with any pile jacketing system. The product offers superior bonding to concrete, steel and wood piles, claims the company. Also, the three-component system is resistant to a variety of chemicals including oils, fuels, salts and solvents.

Discusses the improved reliability of pump base plates using the Stay-Tru method. Development of a method by Stay-Tru Services to minimize field installation costs and improve reliability of pump base plates in late 1990s; Explanation of the Stay-Tru process and procedure of comprehensive pre-grout plan; Inference that superimposition of reliability improvement value causes a substantial decrease in the lifecycle cost of pump installations with the use of this methodology.

Reports the decision of the U.S. Environmental Protection Agency to withdraw the proposed ban of grouts containing acrylamide. Overview of a similar proposal in 1991; Use of the grouts by sewer workers to seal pipes and manhole covers.