FIBROUS REINFORCEMENTS FOR PORTLAND CEMENT CONCRETE

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, WITH RESULTS OF IMPACT TESTS & 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 NYLON MONOFILAMENT. THE COMPRESSIVE STRENGTH IS NOT AFFECTED BY THE NYLON. 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 FULL-SCALE CONSTRUCTION APPLICATION OR TEST SECTIONS ARE GIVEN. /AUTHOR/

• Supplemental Notes:
  • No 2-40, 29 PP
• Authors:
  • Williamson, G R
• Publication Date: 1965-5

Media Info

• Serial:
  • Ohio River Div Labs Tech Repts, Army Ce Clearinghouse Fed Sci & Tech Info

Subject/Index Terms

• TRT Terms: Compression tests; Compressive strength; Crash tests; Fiberglass; Flexural strength; Material reinforcement; Mix design; Nylon; Portland cement concrete; Reinforced concrete; Shock resistance; Shock waves; Spalling; Static tests; Steel wire
• Uncontrolled Terms: Impact strength
• Old TRIS Terms: Compressive strength tests
• Subject Areas: Bridges and other structures; Highways; Research;

Filing Info

• Accession Number: 00208399
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 6 1994 12:00AM