Showing papers by "Grzegorz Ludwik Golewski published in 2019"
TL;DR: In this paper, the fracture toughness during Mode I loading of concretes containing the 0, 20% and 30% addition of class F fly ash (FA), was investigated. And the results of the research show the usefulness of the Digital Image Correlation (DIC) method in experiments of that type.
96 citations
TL;DR: In this paper, the authors presented the results of compressive strength and fracture toughness tests of concrete composite modified with the addition of siliceous fly ash (FA) using the Digital Image Correlation (DIC) system.
79 citations
TL;DR: In this article, the effect of the addition of siliceous fly ashes (FA) in the amount of: 0, 20 and 30% by weight of cement on the interfacial microcracks and mechanical parameters in plain concrete was analyzed.
70 citations
TL;DR: In this paper, the main problems related to the design of dynamically loaded RCC are analyzed, and the most important characteristics of materials used for the construction of reinforced concrete structures subjected to dynamic loads are described.
53 citations
01 Oct 2019
49 citations
TL;DR: The article presents the newest solutions both in terms of technology implementation as well as materials used in construction of foundations for machines, the most dynamically loaded building structures.
Abstract: The aim of this paper is to present the most important issues on the implementation, operation and maintenance of foundation for machines. The article presents the newest solutions both in terms of technology implementation as well as materials used in construction of such structures. Foundations for machines are special building structures used to transfer loads from an operating machine to the subsoil. The purpose of these foundations is not just to transfer loads, but also to reduce vibrations occurring during operation of the machine, i.e. their damping and preventing redistribution to other elements of the building. It should be noted that foundations for machines (particularly foundations for hammers) are the most dynamically loaded building structures. For these reasons, they require precise static and dynamic calculations, accuracy in their implementation and care for them after they have been made. Therefore, the paper in detail present the guidelines regarding: design, construction and maintenance of structures of this type. Furthermore, the most important parameters and characteristics of materials used for the construction of these foundations are described. As a result of the conducted analyzes, it was found that the concrete mix, in foundations for machines, should have a low water/binder ratio. For its execution, it is necessary to use broken aggregates from igneous rocks and binders modified with mineral additives and chemical admixtures. On the other hand, the reinforcement of composites should contain a large amount of structural reinforcement to prevent shrinkage cracks.
41 citations
01 Jun 2019
TL;DR: In this article, the authors proposed a method to solve the problem of the problem: the one-dimensional graph.
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