Carrying Capacity of RubCon Beams at Bend in the Transverse Forces Zone

Load-Carrying Capacity of RubCon Beams at Bend in the Transverse Forces Zone 

Five series of samples were made, distinguished by their reinforcement. Beams of series A, B, and C had longitudinal ribbed reinforcement 2012 (Ra = 6400 kg/cm2) beams of series D and E had longitudinal ribbed reinforcement 2012 (Ra=3400 kg/cm2). 

Beams of series C and D were manufactured without transverse reinforcements. Samples of series A and E used wire stirrups 05 5 cm (Ra = 3400 kg/cm2). Beams of series B used wire stirrups 05 3 cm (Ra = 3400 kg/cm2). Beams of each sample series had action zones of transverse force of various lengths, namely, 12,18,24, 30, and 36 cm (a/h = 1,1.5, 2, 2.5, and 3, respectively). 

Beams were loaded using two symmetrically located concentrated loads. Such loading draft is appropriate for a so-called pure bend and is optimum for examining the influence of transverse forces in zones between supports and loads. The value of the transverse forces in these zones is constant, and bending moments are increased from zero on supports up to a maximum in cross-sections of a beam under loads. Beam samples were tested on a laboratory press. Loading was done with speeds of500 kg/min up to 

FIGURE 2.19 Test sample and draft of loading. (Reprinted from Yu. Potapov, O. Figovsky, Yu. Borisov, A. Polikushkin, and D. Beilin, Influence of Shear Force on the Behavior of Polymer Concrete Beams at Bend, J. Scientific Israel Technological Advantages 4, nos. 3-4 (2002) 25-31. With permission.) 

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