Flexural behavior of two-layer beams made with normal and lightweight concrete layers
نویسندگان
چکیده
In this paper, twelve concrete beams with two different layers of were evaluated as a simply supported beam under four-points loading. The assembled types layers, one which was normal-weight (NWC) and the other lightweight aggregate (LWAC). investigated parameters thickness to overall depth (hLW/h), compressive strength normal concrete. Due weak aggregates used, exhibits more brittleness lower stiffness. Therefore, viability compensating for degradation providing layer seems be very interesting in such beams. behavior based on cracking, failure mode, flexural strength, maximum deflection, stiffness, toughness. results showed slight variations majority above-mentioned performance aspects two-layer compared fully While there great enhancements LWAC variants mainly attributable efficacy using stiffness tensile strength. experimental have been predicted values ACI 318-19, some modifications equations matched beams, comparison terms deflection due service load, moment capacity, cracking moment.
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ژورنال
عنوان ژورنال: Periodicals of Engineering and Natural Sciences (PEN)
سال: 2021
ISSN: ['2303-4521']
DOI: https://doi.org/10.21533/pen.v9i2.1952