... process and at the end of 30, 60, and 90-min intervals. The effects of test time and fine-to-coarse aggregate ratio on the workability were determined using response surface methodology. The compressive and flexural strengths and toughness performances of hardened SFRCs were also measured. In the last...

... of the composites. In addition, thermal and microscopy studies were performed to examine the microstructural evolution of the mixtures. The results showed that the slag-based composites exhibited improved performance, especially at early ages, with a compressive strength of 57–78 MPa and toughness of 30–44 J at 28...

... flexural stiffness toughness prediction equations thickness design References Ghafoori , N. and Dutta , S. , “ Laboratory Investigation of Compacted No-Fines Concrete for Paving Materials ,” J. Mater. Civ. Eng. , Vol.  7 , No.  3 , 1995 , pp.  183 – 191 , https://doi.org/10.1061...

... unit weight, high toughness, and improved absorption of impact. However, to overcome the drawbacks of low flexural strength and the low stiffness of rubberized concrete and to improve the crack resistance, steel, or synthetic (polypropylene) fibers, or both, were added into the rubberized concrete...

... specifications. Fiber surface treatment by UV alone was found to be an unattractive technique based on the results of flexural tests and contact angle measurements. Ten minutes of UV and ozone surface treatment of fibers was found to improve the composite peak stress by 11 % and the toughness by 4 %; longer...