SMART PROPERTIES OF CARBON FIBER REINFORCED SULPHOALUMINATE CEMENT

Carbon fiber reinforced sulphoaluminate cement was fabricated by pressing technology; its smart pro-perties were studied. The phases and relationship between pore diameter and pore volume were analyzed by XRD test and Poremaster analyzer. The influences of different carbon fiber contents on the smart properties of CFRS under monotone stress and cycle stress were studied. The results of pore structure analysis and XRD analysis indicate that the structure is dense, the hydration of sulphoaluminate cement is not completed and the pore diameter is mostly smaller than 0.9 μ m. The monotoning stress test indicates that the fractional changes in capacity of CFRS containing 0.3% and 0.5% carbon fiber are linear to the stress, and having smarter properties; the cycle stress test indicates that the fractional change in capacity of CFRS containing 0.7% carbon fiber is corresponding to the cycle stress change, and the CFRS containing 0.7% carbon fiber has smarter properties.