Flexural performance

Figure 10. Flexural performance of carbon-fiber-reinforced concrete. is the volume fraction of carbon fiber.

M. C. S. Ribeiro, P. R. Novona, A. J. M. Ferreia and A. T. Marques Flexural performance of polyester and epoxy polymer mortars under severe thermal conditions. Cement Concrete Composites Vol.26, No.7 (2004), pp.803-809. 

Experiment research on flexural performance of reinforced concrete beam by high titanium blast furnace slag... 

A uni-directional aramid fibre composite with a similar volume of fibres will have a tensile strength of about 1400 N/mm However, its compressive yield strength is about one-skth of this at 230 N/mml This also affects the flexural performance, giving a value of about 300 N/mml... 

Flax fibers have recently been investigated as reinforcement in polymeric foam matrices for current components used in the transportation industry (Fuqua et al. 2010). Despite the fact that plywood bus floorboards are chemically treated to prevent decay, they stUl require repeated replacement over the lifecycle of a transit vehicle (Vaidya et al. 2004). Mechanical testing of both flexural performance and fastener pullout capabilities of flax-fiber/soy-based PU foam composites demonstrated that they could serve as a suitable flooring replacement in mass transit vehicles. Stmctures ranging from 55% to 70% renewable material by weight with an inexpensive lower quality flax mat (i.e., 40% shive content and 60% fiber) could produce flexural strength comparable to pl3rwood with little environmental impact (Fuqua et al. 2010). 

In Fig. 6.94, a combination of flexural and tensile tests was used thus, two transitions in creep failure behavior are observed. At high stress (above about 175 MPa in flexure, performed by 4-point test), failure occurs very rapidly (52 h) and at low strain (51 %, not shown). Thus, failure occurs before steady-state creep is established. For a given stress, the scatter in time-to-failure is large (2 orders of magnitude). Thus, it is difficult to determine a stress exponent for stress rupture. However, it is quite high, about 40. At stresses below 175 MPa in flexure a transition occurs. The failure strain is much greater (12-16 % for AVCO >18 % for ARCO) and the stress exponent is between 2 and 3. 

Choi, O.C., Lee, C., 2003. Flexural performance of ring-type steel fibre-reinforced concrete. Cement Concrete Research, 33(6), pp. 841-849. 

Anania, L, Badala, A. and Failla, G. (2005), Increasing the flexural performance of RC beams strengthened with CFRP materials . Construction and Building Materials, Vol. 19, Issue 1, pp. 55-61. 

The flexural data for HDPE/PA6/YP CPC MFC are summarized in Table 14.5. All composites show a notable improvement of the flexural performance with <7 values of... 

As we shall see now, shaping the beam allows one to improve further the performance. Let us still consider a beam under flexure but now consider two different but simple shapes for the beam (Figure 2.13b) with the same section b. One of the beams has a square cross section (already studied) while the second has a rectangular cross section, its smaller side being set horizontally. In fact, when the beam is set on its larger side then the flexure performance is poorer this can be easily shown using the method described now or experienced in everyday hfe. The second moments are... 

Chai YH, Priestley MJN, Seible F (1991) Seismic retrofit of circular bridge columns for enhanced flexural performance. ACI Struct J 88(5) 572-584 Federal Highway Administratimi (2006) Seismic retrofitting manual for highway structures part 1-bridges. U.S. Department of Transportation, McLean, 656 pp... 

ASTM C1018 has now (2006) been withdrawn. It has effectively been replaced by ASTM 1609 -Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam with Third-Point Loading). 

A. Peled, A. Bentur and D. Yankelevsky, Flexural performance of cementitious composites reinforced with woven fabrics . Journal of Materials in Civil Engineering. 11, 1999, 325-330. 

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