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Objective - Develop a standard test method and a set of calibration reference materials to quantify pyrrhotite in concrete. What is the technical idea? Pyrrhotite (Fe 1-xS, where x = 0 – 0.2) is a common sulfide mineral exhibiting a brownish-bronze color with a metallic luster. Physical properties
The NIST Physical Infrastructure Program will provide the critical measurement science needed to assess the condition of aging physical infrastructure and guide cost-effective strategies for its maintenance, repair, and replacement. Infrastructure management challenges in the U.S. have received
Objective: By FY2014, to develop and implement measurement science that will provide the technical foundation for service life prediction of filled polymeric materials exposed to compound environmental stressors, through quantitative tests and models applied to polymeric pipes, sealants, and
Objective - To develop and implement measurement science for predicting and validating the lifetime of polymeric components utilized in photovoltaic applications. What is the new technical idea? The US annual energy consumption from solar and other renewable sources exceeded coal for the first time
Donald Scott, Jennifer Goupil, Shane Crawford, Alex Griffin, Cherylyn Henry, Marc Levitan, Franklin Lombardo, John van de Lindt, Peter Vickery
The Structural Engineering Institute (SEI) has a long history of working with NIST and other federal partners to improve ASCE/SEI 7 Minimum Design Loads and
Ronald Lankone, Mauro Zammarano, Song Jhang, Ickchan Kim, David Goodwin, Gianluca Sarti, Stefano Gardi, Camillo Cardelli, Lipiin Sung
Vinyl siding has become a popular choice for residential exteriors across the United States. In its insulated form, this siding includes a shell, capstock, and
Noah Last, Joshua D. Kneifel, Amy Costello, Catherine Houska, Katherine Morris
ASTM International's committee on sustainability (E60), in collaboration with the National Institute of Standards and Technology (NIST), hosted the virtual
Prediction is based on a one-dimensional finite difference solution of Fick's second law of diffusion, with a variable external chloride concentration and a two
(Return to Cement Hydration and Degradation Modeling Software)
Accurate quantitative data on cement and clinker microstructure images can prove valuable for
(Return to Cement Hydration and Degradation Modeling Software) A set of C and Fortran computer programs have been developed for computing the permeability of
(Return to Cement Hydration and Degradation Modeling Software) The purpose of this form is to provide an estimate of the electrical conductivity (S/m) of the
In the artificial ultraviolet (UV) weathering of materials, a need exists for weathering devices that can uniformly illuminate test specimens with a high level
The 1-meter guarded hot-plate apparatus measures thermal conductivity of building insulation. This facility provides for absolute measurement of thermal
In the artificial ultraviolet (UV) weathering of materials, a need exists for weathering devices that can uniformly illuminate test specimens with a high level
The Large Aperture Scanner (LAS) scans a radar transceiver over a 5 meter by 20 meter aperture. Image reconstruction techniques enable a three-dimensional