Abstract
The frictional resistance of interface between gypsum and glass fiber depended on the water content of gypsum, and was greatest at the water content nH2O/CaSO4=0.26.
An interval of 0.4 mm between glass fiber, was necessary for the flowing of gypsum slurry between glass fibers without separation of gypsum from water.
The glass fibers coated with calcium sulfite were better than other surface treated glass fibers for GRG.
