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Effect of cement dosing without additions (CPA) on high-performance and ordinary concrete based glass powder as fine partial cement replacement - a comparative study

Aissat-Arab Bahia, Mehaddene Rachid

Advances in Materials Science

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2024

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Vol. 24, nr 1(79)

17--31

EN

The main objective of this paper research is a comparative study on the effect of the glass powder (GP) substitute from collected and recycled glass waste, as a fine partial cement replacement on the mechanical performance and durability of high performance concrete (HPC) and ordinary concrete (OC). For this two cement dosing were used of 400 kg/m3 to formulate OC and 450 kg/m3 to formulate HPC, and GP as considered binder like cement and not as fine addition, hence binder represent the sum of cement with GP (L=C+GP) with which will be made our two concretes formulation. Two ratios were used for the Water/Binder (W/B), the first W/B=0.35 for the HPC and the second W/B=0.5 for the OC, this ration is very important to fix the concentration of superplasticizer. A percentage of 10% and 20% substitution of cement CPA without additions noted CEM I 52.5 by the glass powder with fineness of 3600 cm 2/g are used. The evaluation of the compressive strength was followed from 7 to 365 days in order to study the behavior of the GP at different ages affected by the cement dosing and the ratio W/B compared to the reference concrete without GP for the two concretes HPC and OC. At 28 days the strengths of concretes with GP is affected by the replacement of a quantity of cement since the two reference concretes were superior but beyond this age an inverse behavior is noticed such that results obtained at age of 365 days seem to be advantageous in terms of savings in the quantity of cement used by interpreting the compressive strength, and the decrease in quantity of water in the mixtures offers a remarkable difference between the two concretes studied by using 20 % of GP as replacement of cement.

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Influence of the waste glass uses on the cement mortar properties

Czapik Przemysław, Kuza Dominik, Boroń Michał

Structure and Environment

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2021

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Vol. 13, no. 2

45--51

EN

In this paper the influence of waste glass on the properties of cement mortar was described. The coloured waste glass in two different forms was used: the glass cullet with a particle size of 0.125-4.00 mm as a fine aggregate and the glass powder with a particle size below 0.125 mm as cement replacement. Both types of glass were obtained by crushing and milling brown glass bottles. The tests were carried out on mortars in which sand was entirely replaced by glass cullet or 20% of cement was replaced by glass powder. The effect of glass cullet and glass powder on the properties of cement mortar, such as setting time, consistency, flexural and compressive strength was determined. Moreover, the role of glass cullet as a potential source of expansion resulted from the alkali-silica reaction was investigated. The microstructure of hydrated composites was also examined with a scanning electron microscope.

PL

W niniejszym artykule opisano wpływ szkła odpadowego na właściwości zaprawy cementowej. Do badań zastosowano barwione szkło odpadowe w dwóch formach: stłuczki szklanej o uziarnieniu 0,125-4 mm wykorzystywanej jako kruszywo drobne i mączki szklanej o uziarnieniu poniżej 0,125 mm wykorzystywanej jako zamiennik cementu. Oba rodzaje szkła uzyskano w wyniku kruszenia i mielenia brązowych szklanych butelek jednego pochodzenia. Badania prowadzono na zaprawach, w których piasek w całości został zastąpiony stłuczką szklaną lub cement w 20% został zastąpiony przez mączkę szklaną. W pracy określono wpływ stosowania stłuczki szklanej i mączki szklanej na podstawowe własności technologiczne zaprawy cementowej, tj. na czas wiązania, konsystencję oraz wytrzymałość na ściskanie i zginanie. Ponadto określono czy stosowanie stłuczki szklanej może być przyczyną wystąpienia ekspansji na skutek zachodzenia reakcji alkalia-krzemionka. Zbadano też mikrostrukturę próbek pod skaningowym mikroskopem elektronowym.

3

Mechanical properties of polymer concretes based on unsaturated polyester resin reinforced with milled car windscreen waste glass and quartz sand

Nowacki Bartłomiej, Değirmenci Berk, Tekeli Berke Doğuş, Smoleń Jakub

Composites Theory and Practice

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2021

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R. 21, nr 4

149--153

EN

This article presents an attempt to evaluate the mechanical properties such as the flexural strength and impact strength of polymer concretes based on unsaturated polyester resin reinforced with milled car windscreen waste glass and quartz sand. A set of five samples was prepared with a stable volume content of resin at 30% and varying proportions of milled glass from recycled car windscreens and quartz sand. The materials were tested in static and dynamic (Charpy) bending conditions. Based on the collected data, it was found that the most favorable properties were obtain by the polymer concrete with milled glass, and milled glass and sand (volume ratio 1:1). It is predicted that the developed materials can be successfully used in the production of paving slabs as well as prefabricated garden and road accessories. This would enable the disposal of troublesome waste, which is car windscreens, to produce high-quality products with a long service life.

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Resistance to Seawater of a New Cement Mortar Based on Additions of Recycled Product

Harbi Radhia, Derabla Riadh, Nafa Zahreddine

Civil and Environmental Engineering Reports

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2021

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Vol. 31, no. 4

249--271

EN

This paper aims to explore some sustainability indicators including mainly the resistance to seawater of mortars containing 5% kaolin filler in the sand and different types of ecoproducts as cement additions. To this end, an experimental study was carried out with the aim of evaluating the effects of three types of cement additions (glass powder (GP), metakaolin (MK) and brick waste (BW)) with contents of 5, 15 and 25% as well as binary and ternary combinations of these same additions. The results obtained made it possible to show the effectiveness of filler and cement additions (glass powder (GP) or / and metakaolin (MK) compared to brick waste (BW)) in improving the durability of mortars against aggressive agents such as seawater. In the end, the cement mortars made from 25% MK, 25% GP and this compound of 5% GP and 25% MK showed good resistance to attack by seawater.

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Powłoki z żywic epoksydowych

Chowaniec Agnieszka, Sadowski Łukasz

Builder

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2019

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R.23, nr 8

5--7

PL

W artykule przedstawione zostały wyniki badań powłok z żywic epoksydowych modyfikowanych dodatkiem odpadowej mączki szklanej. Na podstawie przeprowadzonych badań uzyskano wymagane parametry powłoki z żywicy epoksydowej bez konieczności mechanicznego przygotowania podkładu cementowego i bez zastosowania środka sczepnego. Zdaniem autorki jest to możliwe dzięki dodaniu mączki szklanej będącej materiałem odpadowym z produkcji mikrokulek szklanych. Na podstawie przeprowadzonych badań ustalono optymalną proporcję pomiędzy żywicą epoksydową a dodatkiem odpadowej mączki szklanej.

EN

The paper presents the results of investigations of coatings made of epoxy resins modified with the addition of waste glass powder. On the basis of the conducted tests, the required parameters of the epoxy resin coating were obtained without the mechanical treatment of the cement substrate and without the use of a bonding agent. According to the author, this is possible due to the addition of glass powder, which is a waste material from the production of glass microspheres. On the basis of the conducted tests, the optimal ratio between the epoxy resin and the addition of waste glass pawder was found.

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Epoxy resin coatings modified with waste glass powder for sustainable construction

Chowaniec A., Ostrowski K.

Technical Transactions

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2018

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Vol. 115, iss. 8

99--109

EN

Due to their numerous advantages, epoxy resin coatings are a common way to finish industrial floors. Obtaining coating strength at the level declared by the manufacturer requires preparation of the cement substrate through mechanical treatment, for example, in the form of sandblasting. The next step is the thorough cleaning and vacuuming of the surface and the application of the adhesives. The aim of this research was to improve the strength parameters of a coating in which no adhesive were used. Materials which have a potentially positive effect on epoxy resins are mineral additives. This paper presents the results of tests aimed at improving the adhesion between a concrete foundation and an epoxy resin coating modified with waste glass powder obtained from the production of glass microspheres.

PL

Powłoki na bazie żywicy epoksydowej ze względu na liczne zalety są częstym sposobem wykończenia posadzek przemysłowych. Uzyskanie wytrzymałości powłoki na poziomie deklarowanym przez producenta wymaga przygotowania podłoża cementowego poprzez jego mechaniczną obróbkę w postaci np. piaskowania. Następnym krokiem jest dokładne oczyszczenie i odkurzenie powierzchni oraz naniesienie środka sczepnego. Celem badań było polepszenie parametrów wytrzymałościowych powłoki, w której nie zastosowano środka sczepnego. Materiałem mającym potencjalnie pozytywny wpływ na żywice epoksydowe są dodatki mineralne. W pracy przedstawiono wyniki badań mających na celu poprawę przyczepności pomiędzy podkładem betonowym a powłoką na bazie żywicy epoksydowej modyfikowaną odpadową mączką szklaną pochodzącą z produkcji mikrokulek szklanych.