Stiffness model for gypsum wallboard-to-wood joints

Utilization of Powdered Gypsum-Wallboard in Concrete

Two groups of concrete mixtures, one without sodium sulfate and other with sodium sulfate, as an activator, were made with recycled powdered gypsum-wallboard for this investigation. Group 1 concrete mixtures were made using up to 20% of ASTM Class C fly ash and 20% powdered gypsum while Group 2 contained up to 60% of fly ash and 20% of powdered gypsum by mass. Relevant properties of concrete we...

Fate of Mercury in Synthetic Gypsum Used for Wallboard Production

Fate of Mercury in Synthetic Gypsum Used for Wallboard Production

iii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disc...

Tailor-made Solutions for efficient Water Reduction in Gypsum Wallboard Production

A new method for the characterization of the degree of fire damage to gypsum wallboard for use in fire investigations.

A new method to characterize the degree of fire damage to gypsum wallboard is introduced, implemented, and tested to determine the efficacy of its application among novices. The method was evaluated by comparing degree of fire damage assessments of novices with and without the method. Thirty-nine "novice" raters assessed damage to a gypsum wallboard surface, completing 66 ratings, first without...