Jointless highways and airplane runways, crack resistant bomb shelters, reservoirs that withstand freezing and thawing: all are claimed to be possibilities when constructed with Fycrete, concrete reinforced with glass fiber rods. This new building materials has been developed and tested to show that it is 50 percent cheaper, six times stronger in tensile strength, and more crack-resistant than conventional steel reinforced concrete. The reinforcing element, Fibrite, results from impregnating and coating rods consisting of 3,000 glass fiber filaments, each measuring .00037 inch in diameter, with epoxy resin to protect the rods from the alkaline reactions that occur when water is added to cement. Dr. Klink, the inventor, has devised a production process for Fibrites, which includes the following basic steps: mixing the resin; sending the glass fibers through an impregnator and then through a curer; cutting the cured, continuous, epoxy impregnated glass fiber into small lengths; and packaging and storing the Fibrites at a designated temperature for final curing. In tests conducted by Dr. Klink, Fycrete was shown to be highly crack-resistant. As a matter of fact, failure- defined as the increase in strain without increase in load- occurred before cracks appeared. In most of the test, the fracture load proved to be about 30 percent higher than the load at failure. The crack arrest in Fycrete is due to the fact that fibrites at random in the mass prevent extension of cracks developing at the edges of voids where highly concentrated stresses occur.