@ARTICLE{Gołdyn_M._Experimental_2018, author={Gołdyn, M. and Krawczyk, Ł. and Ryżyński, W. and Urban, T.}, volume={Vol. 64}, number={No 4/I}, journal={Archives of Civil Engineering}, pages={293-306}, howpublished={online}, year={2018}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, abstract={In the paper the results of experimental investigations concerning flat slabs made from reinforced lightweight concrete with sintered fly ash aggregate CERTYD were presented. In the research program 6 models made in a natural scale were included. The main variable parameter was slab longitudinal reinforcement ratio. The aim of investigation was the experimental verification of efficiency of double-headed studs as punching shear reinforcement. In the existing technical approvals such kind of reinforcement was allowed only in normal concrete slabs. It was demonstrated that double-headed studs can be an effective transverse reinforcement of lightweight aggregate concrete slabs. The use of double-headed studs resulted in increase in the ultimate load from 19% to 44%, depending on the slab reinforcement ratio which ranged from 0.5% to 1.2%. The comparative analysis showed that the Eurocode 2 provisions were conservative in relation to the experimental results, which were on average 42% higher than the theoretical ones however with a very low 7% coefficient of variation.}, type={Article}, title={Experimental investigations on punching shear of flat slabs made from lightweight aggregate concrete}, URL={http://www.journals.pan.pl/Content/115625/PDF-MASTER/18_ace-2018-0058.pdf}, keywords={punching shear, lightweight aggregate concrete, fly ash, shear stress, double-headed studs}, }