Polymer-Cement Composites Containing Waste Perlite Powder

Łukowski, P.

doi:10.3390/ma9100839

Cited by 26 publications

(20 citation statements)

References 25 publications

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“…PCM are used because of properties other than elastic parameters [1][2][3][4][5][6]; however, it is still very useful to know the values of their elastic moduli. Polymers, by which the cement mortar is modified, generally have low values of the elastic modulus, which decreases the elastic modulus of the whole composite.…”

Section: Resultsmentioning

confidence: 99%

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The use of the acoustic emission method for the monitoring of changes in the internal structure of polymer-cement mortars when testing the static compressive modulus of elasticity

et al. 2017

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Abstract. The paper focuses on the experimental determination of the dynamic and static compressive modulus of elasticity of selected polymercement mortars and their comparison. The dynamic modulus of elasticity was determined by means of the ultrasonic pulse velocity test and the resonance method. The static compressive modulus of elasticity test was accompanied by a measurement of the material's behaviour using the acoustic emission method, the principle of which is the detection of mechanical dilation waves produced by changes and microscopic faults in the structure of the material. The advantage of the acoustic emission method is the possibility of detecting a crack before it can be found e.g. using a microscope. The outcome of the experiment is a detailed evaluation of the behaviour of polymer-cement mortars made using the values of the elastic modulus and acoustic response of the material during loading.

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Section: Resultsmentioning

confidence: 99%

“…These composites combine a cement matrix with an organic polymer matrix [2]. The composition of PCMs improves some properties, such as workability, flexural strength, adhesion or chemical resistance [3,4]. Cement mortars can be modified by a variety of polymers, e.g.…”

Section: Introductionmentioning

confidence: 99%

The use of the acoustic emission method for the monitoring of changes in the internal structure of polymer-cement mortars when testing the static compressive modulus of elasticity

et al. 2017

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“…It should be noted that, modification of the microstructure of construction materials is also of great importance for other types of composites, e.g. [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Potential of siliceous fly ash and silica fume as a substitute for binder in cementitious concretes

Gil

Golewski

2018

E3S Web Conf.

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Nowadays, concrete constructions are often erected from a material that has been modified with mineral additives or chemical admixtures. Thanks to such modifications, modern and innovative visions of architects and constructors are realizable. Modification of concrete microstructure with mineral additives results in a partial change of its properties as well as physical and mechanical parameters. Ecological and economic reasons are an additional cause of increased interest in the potential use of such additives as fly ash (FA), silica fume (SF), lime powder or granulated blast-furnace slag. The basic physical mechanism of interaction of FA and SF with concrete is primarily to seal the composite microstructure. In the paper a concrete modified with a constant amount of densified silica fume, and a variable percentage amount of siliceous fly ash was analyzed. Concrete samples have been subjected to mechanical and physical tests. Their results allowed to determine the optimal composition of a concrete mix containing the mineral supplements in the context of planned experiments. The use of a combined SF and FA additive as a substitute for a cement binder in a concrete mix allows for an optimal increase in the strength parameters of the concrete, thus not degrading its physical properties. The article presents the characteristics of materials used to make concretes and then analyzes the results of the composites' tests. An in-depth analysis of the results showed the usefulness of silica fumes and siliceous fly ashes as useful raw materials for a concrete production.

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“…Composites containing such wastes and/or by-products (e.g., fly ash, perlite powder, recycled glass, aggregate leftover mineral dust, etc.) are subjected to various tests [5][6][7][9][10][11][12][13], but usually only at the early stage of their service-life. The level of mechanical properties of such composites after a long period of use remains unclear.The aim of the paper is to discuss the "long-term compressive strength" of polymer concretes with traditional quartz fillers (including coarse and fine aggregates, the same as those used in ordinary Portland cement concrete and very fine quartz powders) and sustainable secondary materials, namely the by-products of the combustion of two kinds of fossil fuels, i.e., coal (or so-called "hard coal") and lignite (or "brown coal"), mined in deposits located in Poland.…”

mentioning

confidence: 99%

Long-Term Compressive Strength of Polymer Concrete-like Composites with Various Fillers

Sokołowska

2020

Materials

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The durability of building composites with polymer matrix, such as polymer concretes, is considered high or excellent. However, very few studies are available that show the properties of such composites tested long after the specimens' preparation, especially composites with fillers other than traditional rock aggregates. The paper presents the long-term compressive strength of polymer concrete containing common and alternative fine fillers, including quartz powder (ground sand) and by-products of the combustion of Polish fossil fuels (coal and lignite), tested nine or 9.5 years after preparation. The results were compiled with the data for respective specimens tested after 14 days, as well as 1.5 and 7 years. Data analysis confirmed the excellent durability of concrete-like composites with various fillers in terms of compressive strength. Density measurements of selected composites showed that the increase in strength was accompanied by an increase in volumetric density. This showed that the opinion that the development of the strength of composites with polymer matrices taking place within a few to several days was not always justified. In the case of a group of tested concrete-like composites with vinyl-ester matrices saturated with fly ashes of various origins, there was a further significant increase in strength over time.wastes or by-products are applied to the aforementioned composites as the substitutes of the regular components. Such composites have been recently eagerly designed and produced, following the assumptions of the sustainable development concept, i.e., a concept strongly promoted for the past few years. Composites containing such wastes and/or by-products (e.g., fly ash, perlite powder, recycled glass, aggregate leftover mineral dust, etc.) are subjected to various tests [5][6][7][9][10][11][12][13], but usually only at the early stage of their service-life. The level of mechanical properties of such composites after a long period of use remains unclear.The aim of the paper is to discuss the "long-term compressive strength" of polymer concretes with traditional quartz fillers (including coarse and fine aggregates, the same as those used in ordinary Portland cement concrete and very fine quartz powders) and sustainable secondary materials, namely the by-products of the combustion of two kinds of fossil fuels, i.e., coal (or so-called "hard coal") and lignite (or "brown coal"), mined in deposits located in Poland. The combustion processes are intended to produce electricity or heat. Due to differences in the construction of furnaces and associated combustion installations, the remaining fly ashes differ in terms of morphology and granulation, so they differently affect the consistency of PC mix [13] which, among others, influences the microstructure and, therefore, the properties of hardened composites containing such fly ashes.The tested composites are cement-free (the binder consists solely of vinyl-ester resin). There is also no water in the composition of these composites. Water disturbs or...

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Polymer-Cement Composites Containing Waste Perlite Powder

Cited by 26 publications

References 25 publications

The use of the acoustic emission method for the monitoring of changes in the internal structure of polymer-cement mortars when testing the static compressive modulus of elasticity

The use of the acoustic emission method for the monitoring of changes in the internal structure of polymer-cement mortars when testing the static compressive modulus of elasticity

Potential of siliceous fly ash and silica fume as a substitute for binder in cementitious concretes

Long-Term Compressive Strength of Polymer Concrete-like Composites with Various Fillers

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