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Marta Kadela

Bio: Marta Kadela is an academic researcher from Silesian University of Technology. The author has contributed to research in topics: Compressive strength & Flexural strength. The author has an hindex of 11, co-authored 42 publications receiving 353 citations.

Papers
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Journal ArticleDOI
TL;DR: It was determined that by increasing the recycled glass sand aggregate content, the density of mortar decreased and the relationships between the properties for mortar containingGlass sand aggregate, and the modulus of elasticity and Poisson coefficient.
Abstract: A responsible approach towards sustainable development requires the use of environmentally friendly, low-carbon, and energy-intensive materials. One positive way is to use glass waste as a replacement for fine natural aggregate. For this purpose, the effects of adding glass cullet to the mechanical properties of mortar were carried out. The glass aggregate made from recycled post-consumer waste glass (food, medicine, and cosmetics packaging, including mostly bottles), were used. This experimental work included four different contents of fine glass cullet (5, 10, 15, and 20 wt.% of fine aggregate). The compressive, flexural, and split tensile strengths were evaluated. Moreover, the modulus of elasticity and Poisson coefficient were determined. The addition of glass sand aggregate increases the mechanical properties of mortar. When comparing the strength, the obtained improvement in split tensile strength was the least affected. The obtained effect for the increased analysed properties of the glass sand aggregate content has been rarely reported. Moreover, it was determined that by increasing the recycled glass sand aggregate content, the density of mortar decreased. In addition, the relationships between the properties for mortar containing glass sand aggregate were observed.

58 citations

Journal ArticleDOI
TL;DR: In this article, a series of tests were carried out to examine mechanical properties of foamed concrete mixes without fly ash and with fly ash content, and the influence of 25 cycles of freezing and thawing on the compressive strength was investigated.
Abstract: Foamed concrete shows excellent physical characteristics such as low self weight, relatively high strength and superb thermal and acoustic insulation properties. It allows for minimal consumption of aggregate, and by replacement of a part of cement by fly ash, it contributes to the waste utilization principles. For many years, the application of foamed concrete has been limited to backfill of retaining walls, insulation of foundations and roof tiles sound insulation. However, during the last few years, foamed concrete has become a promising material for structural purposes. A series of tests was carried out to examine mechanical properties of foamed concrete mixes without fly ash and with fly ash content. In addition, the influence of 25 cycles of freezing and thawing on the compressive strength was investigated. The apparent density of hardened foamed concrete is strongly correlated with the foam content in the mix. An increase of the density of foamed concrete results in a decrease of flexural strength. For the same densities, the compressive strength obtained for mixes containing fly ash is approximately 20% lower in comparison to the specimens without fly ash. Specimens subjected to 25 freeze-thaw cycles show approximately 15% lower compressive strengths compared to the untreated specimens.

52 citations

Journal ArticleDOI
TL;DR: The obtained effect of an increase in mechanical properties with the addition of recycled fibers compared to unreinforced concrete is unexpected and unparalleled for polypropylene fiber-reinforcing concrete.
Abstract: High-performance concrete has low tensile strength and brittle failure. In order to improve these properties of unreinforced concrete, the effects of adding recycled polypropylene fibers on the mechanical properties of concrete were investigated. The polypropylene fibers used were made from recycled plastic packaging for environmental reasons (long degradation time). The compressive, flexural and split tensile strengths after 1, 7, 14 and 28 days were tested. Moreover, the initial and final binding times were determined. This experimental work has included three different contents (0.5, 1.0 and 1.5 wt.% of cement) for two types of recycled polypropylene fibers. The addition of fibers improves the properties of concrete. The highest values of mechanical properties were obtained for concrete with 1.0% of polypropylene fibers for each type of fiber. The obtained effect of an increase in mechanical properties with the addition of recycled fibers compared to unreinforced concrete is unexpected and unparalleled for polypropylene fiber-reinforced concrete (69.7% and 39.4% increase in compressive strength for green polypropylene fiber (PPG) and white polypropylene fiber (PPW) respectively, 276.0% and 162.4% increase in flexural strength for PPG and PPW respectively, and 269.4% and 254.2% increase in split tensile strength for PPG and PPW respectively).

50 citations

Journal ArticleDOI
TL;DR: In this paper, a series of static loading tests were performed to determine the fracture properties of foamed concrete of varying density, and the flexural tensile strength was obtained on unnotched beams with dimensions of 100×100×420 mm.

48 citations

Journal ArticleDOI
TL;DR: In this article, numerical simulations of concrete industrial floor with foam concrete layer as substructure were performed with the use of ZSoil finite element software and a comparison of numerical results with a simplified analytical approach which is commonly used by structural engineers.

34 citations


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01 Jan 2016
TL;DR: The properties of concrete is universally compatible with any devices to read, and is available in the digital library an online access to it is set as public so you can download it instantly.
Abstract: Thank you for downloading properties of concrete. As you may know, people have look hundreds times for their chosen readings like this properties of concrete, but end up in malicious downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they juggled with some malicious virus inside their computer. properties of concrete is available in our digital library an online access to it is set as public so you can download it instantly. Our digital library hosts in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the properties of concrete is universally compatible with any devices to read.

1,701 citations

01 Jan 2016
TL;DR: The design and control of concrete mixtures is universally compatible with any devices to read and will help you get the most less latency time to download any of the authors' books like this one.
Abstract: Thank you for reading design and control of concrete mixtures. Maybe you have knowledge that, people have look numerous times for their chosen books like this design and control of concrete mixtures, but end up in infectious downloads. Rather than enjoying a good book with a cup of tea in the afternoon, instead they cope with some infectious virus inside their desktop computer. design and control of concrete mixtures is available in our digital library an online access to it is set as public so you can download it instantly. Our book servers saves in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the design and control of concrete mixtures is universally compatible with any devices to read.

339 citations

Journal ArticleDOI
TL;DR: The results showed that the proposed ELM model achieved an adequate level of prediction accuracy, improving MARS, M5 Tree and SVR models, and could be employed as a reliable and accurate data intelligent approach for predicting the compressive strength of foamed concrete.

254 citations

Journal ArticleDOI
TL;DR: In this paper, an extensive experimental campaign was carried out to investigate the mechanical strength of fiber-reinforced lightweight foamed concrete, which was prepared with a viscosity enhancing agent that increases the cohesion and consistency of the cement paste at the fresh state.

138 citations

Journal ArticleDOI
TL;DR: An overview of the available approaches in determining the fracture energy of concrete and effective parameters is presented and includes experimental methods which form the basis for measuring the fracture energies obtained from work of fracture and size effect models and thus provides a comparison between different models.

100 citations