Experimental and numerical investigation on the performance of adhesive steel-dowels used in precast reinforced concrete elements. (June 2022)

• Record Type: Journal Article
• Authors: Abd El-Hameed, Samya; Eladawy, Mohamed; Agamy, Mohamed H.; Haggag, Hesham
• Is Part Of: Structures. Volume 40(2022)
• Page Start: 49
• Page End: 63
• Publication Date: 2022-06
• Subjects: Pre-cast reinforced concrete -- Push-off test -- Beam–column dowel connection -- Shear capacity -- Adhesive steel dowel -- Finite element -- Shear friction -- ANSYS; Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2022.04.006
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: Precast reinforced concrete (PCRC) applications provide several structural, economic, and environmental benefits. Therefore, recently the PCRC elements have been widely used in construction implementation. However, the connection's behavior and its possible failure under different types of loads are considered essential challenges during the design of the PCRC elements. This study aimed to investigate the performance of the adhesive dowels connections and their shear capacity. The experimental phases focused on examining eighteen push-off concrete specimens and four reinforced concrete (RC) beams-column connections. While the numerical phase was conducted using the finite-element software package ANSYS to simulate concrete connections behavior. Push-off specimens consisted of two concrete blocks measured 250 mm in width. Blocks connected by steel dowel that crossed the shear plane. While beams measured 120 mm in width, 300 mm in depth, and 1400 mm in length. Beams connected to existing 300 mm square column with adhesive dowels. All specimens were loaded monotonically until failure through a constant loading rate. The experimental study aimed to evaluate the effects of the shear plane depth, dowels' embedded length, dowels' diameter, the edge distance, and dowels ratio The test results revealed that the shear plane conditions and area, as well as the adhesive dowels configurations, had a significant effect on the shear capacity of dowel specimen. Moreover, the finite element model provided a better understanding of the different modes of failure observed during experimental testing and the shear capacity of adhesive dowels.