Počet záznamů: 1
Experimental investigation of the influence of the bond conditions on the shear bond strength between steel and self- compacting concrete using push-out tests
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SYSNO ASEP 0385495 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Experimental investigation of the influence of the bond conditions on the shear bond strength between steel and self- compacting concrete using push-out tests Tvůrce(i) Helincks, P. (BE)
De Corte, W. (BE)
Klusák, Jan (UFM-A) RID, ORCID
Boel, V. (BE)
De Schutter, D. (BE)Zdroj.dok. Key Engineering Materials - ISSN 1013-9826
525-526, č. 1 (2013), s. 205-208Poč.str. 4 s. Akce Fracture and Damage Mechanics /11./ Datum konání 18.09.2012-21.09.2012 Místo konání Xi'an Země CN - Čína Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova steel-concrete joint ; epoxy adhesive layer ; push-out test Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GAP108/10/2049 GA ČR - Grantová agentura ČR GAP105/11/1551 GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 UT WOS 000315543300052 DOI https://doi.org/10.4028/www.scientific.net/KEM.525-526.205 Anotace Steel-concrete joints are often provided with welded shear studs. However, stress concentrations are induced in the structure due to the welding. Moreover, a reduction in toughness and ductility of the steel and a decreased fatigue endurance of the construction is observed. In this paper the shear bond strength between steel and ultra-high performance concrete (UHPC) without mechanical shear connectors is evaluated through push-out tests. The test samples consist of two sandblasted steel plates with a thickness of 10 mm and a concrete core. The connection between steel and concrete is obtained by a 2-component epoxy resin. Test samples with a smooth adhesive layer are compared with those with an epoxy layer, which is applied with a toothed paddle and/or gritted with small aggregates. In this research, specimens prepared with river gravel, crushed stone, and steel grit are compared and also two different epoxy resins are used. During the tests, the ultimate shear force is recorded as well as the slip between steel and concrete. All test specimens exhibited a concrete-adhesive or concrete failure. Furthermore, test results show that the use of a more fluid epoxy resin improves the anchorage of the gritted aggregates in the adhesive layer, resulting in higher shear bond stresses. No significant difference is found between specimens, gritted with river gravel or crushed stone. Applying the adhesive layer with the toothed paddle in horizontal direction slightly improves the bond behaviour. Finally, the experimental results of the test members with a smooth epoxy layer without gritted aggregates, provide test data for a fracture mechanics approach, which uses a 2D numerical model of the test specimen, composed of steel, epoxy resin, and concrete. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2013
Počet záznamů: 1