Polymer concrete systems for use in the construction of steam-valve manholes

The results of a research program conducted by Brookhaven National Laboratory for the Consolidated Edison Company of New York to develop and evaluate polymer concrete (PC) systems, which can be used as alternative materials of construction to conventional steel-reinforced portland cement concrete (PCC) in high temperature (up to 400{degrees}F [204{degrees}C]) applications, are presented. Three fiber-reinforced PC systems were evaluated in a series of laboratory and field tests. Based upon the results of these tests a preliminary design study was made to determine the necessary floor, wall, and roof slab thicknesses required to replace a typical steel-reinforced PCC manhole with a cast-in-place, fiber-reinforced PC manhole.