Mechanical properties of hybrid braided composite rebars are evaluated and compared to theoretical predictions which account for specific processing parameters including yarn size, braiding machine setup, and fiber type. Using a combination of high modulus carbon (Thornel P-55S) and aramid (Kevlar 49) fibers bars have been produced of up to 10 mm diameter with a Young's modulus of 200 GPa, a bi...

Josee Laganiere,1* Adrian P. Kells,2* Jeffrey T. Lai,1 Dmitry Guschin,1 David E. Paschon,1 Xiangdong Meng,1 Lauren K. Fong,1 Qi Yu,1 Edward J. Rebar,1 Philip D. Gregory,1 Krystof S. Bankiewicz,2 John Forsayeth,2 and H. Steve Zhang1 1Sangamo BioSciences, Point Richmond Tech Center, Richmond, California 94804, and 2Department of Neurological Surgery, University of California, San Francisco, San F...

In this research, the load-deflection behavior is explored for concrete beams reinforced with FRP bars (polymer reinforcement). An experimental test done a total of five subjected to 4-point loading. The tested specimens are dimensions; 2100 mm (length), 200 (width) and 300 (depth), while used compressive strength f’c = 60 MPa. Four were longitudinally by various CFRP rebar numbers, last beam w...

Ground-penetrating radar (GPR) detects a tunnel with relatively low-frequency electromagnetic waves, which can result in poorly characterized reinforced steel bar (rebar) hyperbolas and make it challenging to recognize rebar. Thus, the rebar is located by using attenuation reflection coefficients, hyperbolic feature of reconstructed for recognition. Due differences properties other media second...