Accession Number : AD0427342


Title :   PLASTIC FIBROUS REINFORCEMENT FOR PORTLAND CEMENT,


Descriptive Note : Technical rept.


Corporate Author : ARMY ENGINEER RESEARCH AND DEVELOPMENT LABS FORT BELVOIR VA


Personal Author(s) : Goldfein,S


Report Date : 29 Oct 1963


Pagination or Media Count : 16


Abstract : An investigation was made to determine methods for increasing the impact and shatter resistance of portland cement. Conclusions were that (1) all fibers investigated increased the impact strength of cement; (2) nylon, polypropylene, polethylene, and Saran imparted the greatest strength to cement, in the order listed; (3) nylon imparted the greatest impact strength of all the fibers investigated, since it was 83% by weight and 36% by volume stronger than its closest competitor, polypropylene, (4) nylon introduced into cement under optimum conditions increased the Izod impact strength more than 27 times that of the unreinforced cement; (5) fibers such as cotton, rayon acetate, Orlon, glass, and Dacron imparted little strength to the cement, because they were degraded by the high alkalinity in the cement; and (6) steel wires increased the flexural strength of cement and also increased its shatter resistance, but they did not impart the resilience which nylon provided. (Author)


Descriptors :   *CONCRETE , TEXTILES , FIBERS , SYNTHETIC FIBERS , COTTON TEXTILES , DACRON , NYLON , ORLON , RAYON , WIRE , STEEL


Distribution Statement : APPROVED FOR PUBLIC RELEASE