Dr. Roman Jaskulski
Department of Building, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
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Academic Career Length
14Years (2013-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
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Journal Article
Roman JaskulskiDJDaria Jozwiak-Niedzwiedzka
Daria Jozwiak-NiedzwiedzkaYYYaroslav Yakymechko
Yaroslav YakymechkoCalcined clays are the only potential materials available in large quantities to meet the requirements of eco-efficient cement-based materials by reducing the clinker content in blended cements or reducing the cement content in concrete. More than 200 recent research papers on the idea of replacing Portland cement with large amounts of calcined clay are presented and discussed in detail. First, the fundamental information about the properties and structure of clay minerals is described. Then, the process of activation and hydration of clays is discussed, including the methods of pozzolanic activity assessment. Additionally, various testing methods of clays from different worldwide deposits are presented. The application of calcined clay in cement and concrete technology is then introduced. A separate chapter is devoted to lime calcined clay cement. Then an influence of calcined clay on durability of concrete is summarized. Finally, conclusions are formulated.
1 January 2013 in Procedia Engineering
Journal Article
WKWojciech Kubissa
Wojciech KubissaRoman JaskulskiThe article presents measurements of sorptivity. They were performed not only, as usual, after 28 days, but also after longer periods of time (2, 3, 6, 9, 12, 24 months) on samples made of the same concrete. Four different concretes were researched. Differences between the initial value of sorptivity and further measured ones were statistically tested. Results of measurements and tests proved that the initial value of sorptivity can be regarded as quite an exact approximation of further measured values of this parameter
1 January 2017 in Journal of Renewable Materials
Journal Article
This article deals with an experimental study concerning the development of concrete mixtures with significant ecological benefits. The studied concrete mixtures were based on blast-furnace cement, with an additional application of supplementary cementitious materials—fly ash, metakaolin, and silica fume and fluidized fly ash. Coarse aggregate in the form of crushed concrete was applied for all studied concrete mixtures. The experimental program was primarily focused on the assessment of the durability properties of the studied mixtures in terms of mechanical tests, absorption tests, chloride migration coefficient tests, water penetration tests, and accelerated carbonation depth tests. The results obtained showed good potential for waste materials in durable concrete production. The studied mixtures, with incorporated supplementary cementitious materials, exceeded the level of high performance concrete (HPC) in terms of mechanical properties. Such modification of the binding system also significantly contributed to an increase in durability properties; however, mixtures with the fluidized fly ash application exhibited reduced resistance to carbonation.
31 August 2016 in Periodica Polytechnica Civil Engineering
Journal Article
Influence of SCM on the Permeability of Concrete with Recycled Aggregate
1 January 2015 in Procedia Engineering
Journal Article
WKWojciech Kubissa
Wojciech KubissaRoman JaskulskiAKArtur Koper
Artur KoperJSJacek Szpetulski
Jacek SzpetulskiWe can observe the growing tendency of usage of recycled concrete aggregate (RCA). Changes in waste materials management rules will result in necessity of more common reutilization of materials from demolished concrete structures. Thus new fields of RCA application and new ways of its utilization in concrete manufacturing are still being looked for.Research presented in the paper has been conducted to examine two methods of improving poor gradation of natural aggregate (NA) using RCA. The NA that did not fulfill requirements of gradation had been chosen. It consisted of ca. 75% of 2-4mm fraction. In the first method a part of NA was replaced with 2-16 fraction of RCA of low quality. In the second method also a part of NA was replaced this time with 4-8mm and 8-16mm fractions of good quality RCA. The amount of replacing fractions was precisely calculated in order to fit optimal gradation curve. Quality of the gradation was measured with so called gradation index. Mechanical properties of researched concretes was tested as well as some of their properties related to durability. It can be stated, on the basis of the results, that both methods improve most of the vital concrete properties
1 March 2019 in International Journal of Heat and Mass Transfer
Journal Article
Roman JaskulskiMGMichal A. Glinicki
Michal A. GlinickiWKWojciech Kubissa
Wojciech KubissaMDMariusz Dąbrowski
Mariusz DąbrowskiAbout Me
Roman Jaskulski is an Associate Professor at the Department of Civil Engineering of Wrocław University of Environmental and Life Sciences. He also serves as Vice-Dean for Studies in Civil Engineering and Applied Bioeconomy. Prior to his current position, Roman Jaskulski served as a senior specialist at the Department of Strength of Materials of the Institute of Fundamental Technological Research of Polish Academy of Sciences from 2015 to 2016 and served as an Assistant Professor from 2007 to 2022 and as an Associate Professor from 2022 to 2023 at the Faculty of Civil Engineering Mechanics and Petrochemistry of Warsaw University of Technology. He has also served as a member of the Discipline Council for Civil Engineering, Geodesy, and Transport of Wrocław University of Environmental and Life Sciences since 2023, as a member of International Union of Laboratories and Experts in Construction Materials, Systems, and Structures (RILEM) since 2019, as a member of the American Society for Testing and Materials (ASTM International) since 2019, and as an Associate Member of the American Society of Civil Engineers since 2015. He has published over 100 publications in various journals, with his research interest focusing on Engineering and Materials Science as well as Construction and Building Technology.