Accession Number : AD0465999

Title :   FIBROUS REINFORCEMENTS FOR PORTLAND CEMENT CONCRETE.

Descriptive Note : Technical rept.,

Corporate Author : OHIO RIVER DIV LABS CINCINNATI

Personal Author(s) : Williamson, G. R.

Report Date : MAY 1965

Pagination or Media Count : 1

Abstract : Methods of increasing the flexural strength and shock resistance of concrete through the use of various sizes and lengths of chopped-steel wire, fiber glass, and nylon are presented. Only the nylon and steel wires proved effective. The results of static, flexural, and compressive tests are given, along with results of impact tests and tests conducted with high explosives. It is shown that the 28-day ultimate flexural strength can be increased over 2.5 times that of plain concrete by the use of chopped-steel wire as random reinforcement, and 1.5 times that of plain concrete with the use of a nylon monofilament. The compressive strength is not affected by the nylon; however, an increase in strength of 1.5 times that of plain concrete can be realized from the use of chopped-steel wire. Resistance to impact loads and to shock waves are increased when the concrete is reinforced with either nylon or chopped wire. Random reinforced specimens did not spall even though subjected to more than five times the stress required to produce spalling in plain concrete. Selected nylon or wire mix designs that can be used for fullscale construction application or test sections are given. (Author)

Descriptors :   (*CONCRETE, REINFORCING MATERIALS), (*REINFORCING MATERIALS, SYNTHETIC FIBERS), GLASS TEXTILES, NYLON, STEEL, WIRE, COMPOSITE MATERIALS, MECHANICAL PROPERTIES, DEFLECTION, SHOCK RESISTANCE, IMPACT SHOCK, COMPRESSIVE PROPERTIES, TENSILE PROPERTIES, ELASTIC PROPERTIES, SHOCK WAVES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE