US EPA

782607 

Journal Article 

Carbon fibre reinforcement of cement 

Ali, M 

1972 

Yes 

Cement and Concrete Research
ISSN: 0008-8846 

2 

2 

201-212 

English 

10.1016/0008-8846(72)90042-7 

http://linkinghub.elsevier.com/retrieve/pii/0008884672900427
Exit
 

BECAUSE OF CHEMICAL INERTNESS AT AMBIENT TEMPERATURES, CARBON FIBERS ARE USED TO REINFORCE REACTIVE MATRICES, SUCH AS CEMENT, DESPITE HIGH COSTS. THESE FIBERS HAVE VERY HIGH STRENGTH AND ELASTIC MODULUS; THEREFORE, ONLY A SMALL VOLUME OF FIBER IS REQUIRED FOR PRODUCING COMPOSITES HAVING STRENGTHS SIMILAR TO THOSE OF COMMERCIAL ASBESTOS-CEMENT SHEETS. A 3% BY VOLUME ADDITION OF THE HIGH-MODULUS CARBON FIBER TO CEMENT RESULTS IN A 2-FOLD INCREASE IN THE MODULUS OF ELASTICITY AND A 5-FOLD INCREASE IN THE TENSILE STRENGTH OVER THE VALUES OF THE UNREINFORCED MATRIX. CARBON FIBERS ALSO INCREASED THE CRACKING STRAIN OBSERVED IN TENSILE TESTS. RESULTS OF DURABILITY TESTS OF SAMPLES CONTINUOUSLY STORES IN 50 DEG C WATER INDICATED THE CARBON REINFORCED FIBER SPECIMENS HAD HIGHER MODULI OF RUPTURE THAN ASBESTOS-CEMENT SPECIMENS; NO SIGNIFICANT IMPROVEMENT IN IMPACT STRENGTH WAS OBSERVED. (USBR) 

Water Resources Abstracts; CONCRETE TECHNOLOGY; FIBERS; REINFORCEMENT; PHYSICAL PROPERTIES; LABORATORY TESTS; REINFORCED CONCRETE; ASBESTOS CEMENT; TENSILE STRENGTH; IMPACT TESTS; CEMENTS; STRENGTH; DURABILITY; CORROSION; CARBON FIBERS; REINFORCING MATERIALS; GREAT BRITAIN; COMPOSITE MATERIALS; MODULUS OF ELASTICITY; RUPTURE MODULUS; STRESS-STRAIN CURVES; SW 6060:Concrete