Nanomonitoring of Polymer Cement Concrete Microstructure / Untersuchung des Mikrogefiiges von Polymer-Zement-Beton im Nanobereich

Czarnccki, L.; Schorn, H.

doi:10.1515/rbm-2007-6127

Cited by 15 publications

(9 citation statements)

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“…In other words, the nanoparticles promoted high activity and accelerated cement hydration. The results followed the same trend of strength improvement with other studies [23][24][25], confirming that the presence of nanoparticles such as SiO2, Fe3O4 and TiO2 enhanced the mechanical properties of cementitious composites.…”

Section: Preliminary Studysupporting

confidence: 85%

A Comparative Study on the Influence of Nano and Micro Particles on the Workability and Mechanical Properties of Mortar Supplemented with Fly Ash

2021

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In this study, the effects of micro‐Al2O3 (MA) and nano‐Al2O3 (NA) on the mechanical properties and durability performance of a mortar containing fly ash (FA) were investigated. In the first step, MA and NA were added to the mortar (as a cement replacement) at dosages of 0%, 5%, 10% and 15% by weight. The flowability of the mixture containing NA and MA showed a dosage‐dependent behavior, and the addition of MA resulted in a higher flow spread compared with NA. The flow spread increased at 5% (for both NA and MA), and a further increase in the particle content to 10% and 15% decreased the flow spread value. Although the presence of MA and NA contributed to increasing the compressive strength as the particle content increased, the addition of NA resulted in a greater increase in compressive strength (40% increase when adding 15% of NA). The highest splitting tensile strength was obtained when 10% NA was used, and a further increase in the particle content decreased the splitting tensile strength. In the optimization step, the effect of a binder replacement with FA (10, 20 and 30%) in the presence of 10% NA as the optimum level of additive was investigated. Generally, the addition of FA decreased the compressive strength. The highest drop in compressive strength was noticed at early ages, and there was no significant difference in strength development from 14 days to 28 days. A decreasing trend in the splitting tensile strength was observed with the addition of FA content.

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Section: Preliminary Studysupporting

confidence: 85%

A Comparative Study on the Influence of Nano and Micro Particles on the Workability and Mechanical Properties of Mortar Supplemented with Fly Ash

2021

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“…Thus various theories were formulated (35). Despite many years of research on cement systems containing a polymer binder, one cannot indicate whether the interactions between them are only physical or result from a synergy of physical and chemical interactions (32,(36)(37)(38)(39)(40).…”

Section: Results and Their Analysismentioning

confidence: 99%

“…Pomimo wieloletnich badań układów cementowych zawierających w swoim składzie spoiwo polimerowe nie można także jednoznacznie wskazać czy oddziaływania pomiędzy nimi są jedynie natury fi zycznej czy też są wynikiem synergii oddziaływań fi zycznych i chemicznych (32,(36)(37)(38)(39)(40).…”

Section: Wyniki I Ich Analizaunclassified

The risk of a different assessment of the performance of cementitious ceramic tile adhesives in the light of the results of interlaboratory comparisons

Michalak¹

2023

Cement Wapno Beton

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The article presents the current state of knowledge on the measurement of the adhesion of cementitious ceramic tile adhesives [CTAs] using the pull-off technique. The author discusses the results of the systematic literature review for the keywords of this article with particular attention to the interlaboratory comparisons [ILCs]. The cementitious CTAs adhesion measurements, particularly the results obtained in the ILCs, became the basis for analyzing the relationship between the participants of the conformity assessment of construction products. The analysis considers the links between science and industry and their environment resulting from formal and legal conditions related to the evaluation of construction products. Based on the study, the author proposes a mind map showing the relationships between potential participants in the CTAs compliance assessment process, with particular emphasis on ILCs. It indicates that using different criteria for evaluating the results of cementitious CTAs adhesion measurement by science and industry is not conducive to developing mutual relations between the two worlds.

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“…polymer with the most traditional material: concrete. I felt highly satisfied as the co-creator of the material models of new solutions, observing the resulting disputes [67,68,69] and having the sense of maturity to search for new development paths [70,71], until finally asking the question if polymer is still the factor which contributes to progress in concrete technology [72]. In a paper published last year, called "Would recycled plastics be a driving force in concrete technology?"…”

Section: Truth Of Development Directions: Defined Past -Fuzzy Futurementioning

confidence: 99%

Archives of Civil Engineering

Czarnecki¹

2020

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The paper presents pursuits of the truth in building materials engineering. Some definitions of "what truth is" were presented. Partial truths were specified: the truth of scientific reasoning, the truth of scientific assessment, the truth of development directions and the splendour of scientific truth. All categories are addressed to the building materials engineering. In the chapter "Load capacity and stability vs entropy" definitions of entropy and exergy were presented followed by their influence on building construction, illustrated by the "Seneca cliff" and "Energy pyramid". Chapter 3 presents the truth of scientific reasoning was presented. Three partial truths were indicated: the truth of experimental fact, the truth of scientific reasoning and the truth of scientific presentation. In the chapter "Truth of scientific assessment" two main assessment methods were presented: peer review and a bibliometric parametric assessment as well as their impact on the results and authors. The risks associated with the sole parametric assessment were shown as the two basic factors of a parametric assessment -citation number and Hirsch index -need time to "mature". Additionally, the influence of digitalisation of the assessment of a scientist and a scientific unit on the commoditisation and dehumanisation of science was outlined. In the chapter "Truth of development directions: defined past -fuzzy future" the megatrends observed in technology in the last few decades years were indicated along with new possible trends. Milestones in the development of C-PCs (Concrete-Polymer Composites) were presented. The new paradigm for the new development cycle was proposed.

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Nanomonitoring of Polymer Cement Concrete Microstructure / Untersuchung des Mikrogefiiges von Polymer-Zement-Beton im Nanobereich

Cited by 15 publications

References 0 publications

A Comparative Study on the Influence of Nano and Micro Particles on the Workability and Mechanical Properties of Mortar Supplemented with Fly Ash

A Comparative Study on the Influence of Nano and Micro Particles on the Workability and Mechanical Properties of Mortar Supplemented with Fly Ash

The risk of a different assessment of the performance of cementitious ceramic tile adhesives in the light of the results of interlaboratory comparisons

Archives of Civil Engineering

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