Shear behavior of ferrocement box beams

✍ Scribed by G.J. Al-Sulaimani; I.A. Basunbul; E.A. Mousselhy

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 620 KB
• Volume: 13
• Category: Article
• ISSN: 0958-9465
• DOI: 10.1016/0958-9465(91)90044-i

✦ Synopsis

The shear behavior of ferrocement box beams has been studied by conducting flexural tests on 15 beam specimens. The major parameters used were amounts of wire mesh reinforcement in webs and in flanges of the beam and shear span to depth ratio, a/h. Test results indicate that cracking and ultimate shear forces increase as wire mesh in webs is increased; placing wire mesh in fanges also increases shear resistance through arresting the tension cracks and causing them to be finer. Hence, the shear behavior is studied in relation to the total volume fraction of wire mesh reinforcement Vf, which includes mesh reinforcement in both webs and flanges. The cracking and ultimate shear strengths also increase as the a /h ratio is decreased. The ACI equation for shear strength of conventional reinforced concrete beams without web reinforcement underestimates the cracking shear strength of ferrocement box beams. Hence, an empirical equation has been developed here using a multiple regression analysis to predict the shear strength of ferrocement box beams.