Polyurethane Grouting for Sealing Leakages in Tunnels

Characteristics of Urethane-Grouted Sand for In Situ Seepage Control

PCCP Repair with Steel Liner and Polyurethane

Periodic Processes in Vapor Phase Biofiltration

Swedish Success
Constructing the Hoga Kusten Bridge in northern Sweden, which features the seventh-longest main span of any suspension bridge in the world, was a complex task made more difficult by the...

Developments in Sandwich Beam Theory and Practice

Constitutive Modeling and Simulation of Energy Absorbing Polyurethane Foam Under Impact Loading
The compressive-stress strain response of polyurethane foam under uniaxial compressive impact loading has been studied. The development of a uniaxial constitutive model from strain rate...

Adhesives and Structural Plastics
An overview of some primary considerations for the use of adhesives and their advantages in connection of structural plastics is presented. Effective joint geometries, surface preparations,...

Development of a Constitutive Model for Impact Limiters
A constitutive model is being developed for 'impact limiter' materials such as aluminum honeycombs and polyurethane foams. Among other applications, these materials...

The Use of Polyurethane Grouts and Grout Tubes
Most polyurethane grouts used for seepage control are one-component, and water activated. They are prepolymers of a polyisocyanate with a polyol. Some of the polyurethane grouts use an...

Foam Rubber Modeling of Soil-Structure Interaction

Nature's Solutions to Space Insulation
Humans working or living in the harsh environment in space must be protected from temperature extremes. Any effective insulating system must be able to withstand a wide range of temperatures....

Brighter Future for Stay Cables
Corrosion problems on cable stayed bridges can be prevented, according to several engineers who responsed to Cables in Trouble, a Civil Engineering article that appeared in the April 1988...

Low Friction and Adfreeze Coatings
Low friction and adfreeze coatings have proven to be cost effective in reducing skin friction on icebreaker hulls. Of the two coatings acceptable for this service, the 100% polyurethanes...

Foam Grout Saves Tunnel
Pittsburgh's 81 year old Mt. Washington tunnel has been made safe for many more decades of light-rail transit use, with the use of foamed chemical grout. The job is the first...

Polyurethane Grouting in Hydraulic Engineering

Polyurethane Foamed Plastics in Soil Grouting
Significant strengthening and the impermeabilization of both dry and saturated granular soils have been effected following injection of polyurethane foamed plastic systems. Six systems...

 

 

 

 

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