Alkaline Factor in Cements with Glass Powder

Shevchenko, V. V.; Kotsay, Galyna

doi:10.23939/chcht11.01.099

Cited by 4 publications

(4 citation statements)

References 12 publications

(10 reference statements)

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“…Even if the carbonation front were different from those resulting from reinforced samples, in this study, it does not influence the corrosion rate because is only a few millimeters on the concrete surface. Therefore, the carbonation front is almost negligible after two years of exposure, possibly due to an increase in the pH value caused by the particle size average of 23 μm used in this research, and supported by some authors [12, 13].…”

Section: Resultsmentioning

confidence: 73%

“…Additionally, these mixtures have shown greater elastic modulus, less drying shrinkage, less water absorptivity, and higher resistance against chloride ion penetration [11]. On the other hand, as a partial replacement of cement, it has been reported that particle size of glass powder between 63 μm and 20 μm increases the pH [12]. However, particles of 0.10 μm decrease it [13].…”

Section: Introductionmentioning

confidence: 99%

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Corrosion of rebars in recycled glass concrete under tropical marine environment

Hoil-Canul

Maldonado-López

Díaz‐Ballote

et al. 2022

Materialwissenschaft Werkst

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This study demonstrates the potential use of recycled powder glass as cement replacement to prepare durable concrete and avoid infrastructure corrosion in tropical marine environments using limestone as fine and coarse aggregates. Samples for corrosion measurements were prepared with #3 (~9.5 mm) bars and without reinforcement for carbonation, chloride penetration, and mechanical strength tests. Powder glass was used as partial cement replacement by 0 %, 5 %, 10 %, and 15 % (weight percent). Over two years, the corrosion behavior of rebars was recorded through corrosion potential measurements and linear polarization resistance. In addition, carbonation depth and chloride penetration were analyzed from samples that were not reinforced. Results showed that replacing cement with glass does not change the mechanical strength at 28 days, but after 90 days of curing showed an increment as a function of time and recycled glass powder amount. The chloride penetration and the carbonation front are reduced substantially. Consequently, a moderate corrosion level was observed when the corrosion onset was established. Excellent corrosion protection was identified for a 0.70 water to cement ratio and 5 % cement replacement. Keywords: Carbonation concrete / chlorides rebars / corrosion / glass waste recycling / tropical marine environment Schlüsselwörter: Karbonatisierter Beton / Chloride / Betonstahl / Korrosion / recyceltes Glas / tropisch-marine Umgebungsbedingungen

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Section: Resultsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Corrosion of rebars in recycled glass concrete under tropical marine environment

Hoil-Canul

Maldonado-López

Díaz‐Ballote

et al. 2022

Materialwissenschaft Werkst

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“…Among three main types of recycling glass the green glass is the most active. It additionally contains Cr 2 O 3 which catalyzes the conversion of calcium hydro silicate CSH(I) into 1,4-tobermorite as one of the primary crystalline phases of post induction period of Portland Cement hydration [21][22][23].…”

Section: Discussionmentioning

confidence: 99%

Prospective of Glass Powder as Active Additive to Portland Cement

Шевченко¹,

Kotsay²

2015

ChChT

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“…The use of glass as an aggregate for mortar or concrete reduces the strength of the obtained products as a result of the reduction in the adhesion between the slurry and the glass aggregate. Moreover, the use of glass as a non-clinker component of cement is also limited due to the high content of alkali in the waste glass, which in turn causes an alkali-silica reaction (ASR) [14][15][16][17][18][19][20]. The potential use of glass cullet as a non-clinker component of cement is not clear.…”

Section: Introductionmentioning

confidence: 99%

Properties of Geopolymers Based on Metakaolin and Soda-Lime Waste Glass

Kotsay,

Grabowski

2023

Materials

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The paper determines the properties of geopolymer pastes based on metakaolin and soda-lime waste glass. The density, alkaline activity, strength and microstructure of the reference geopolymer, as well as geopolymers with a 10%, 30% and 50% soda-lime waste glass content instead of metakaolin, were tested. The experimental results indicate that the properties of the geopolymers with waste glass largely depend on the ratio of the liquid to solid substance. Increasing the content of waste glass causes an increase in the fluidity of the geopolymer paste, which in turn allows the amount of water glass, i.e., an activator during the obtaining of geopolymers, to be reduced. On the basis of the conducted tests, it was found that the strength of geopolymers can be increased by adding up to 50% of soda-lime waste glass instead of metakaolin and by having a lower content of water glass.

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Alkaline Factor in Cements with Glass Powder

Cited by 4 publications

References 12 publications

Corrosion of rebars in recycled glass concrete under tropical marine environment

Corrosion of rebars in recycled glass concrete under tropical marine environment

Prospective of Glass Powder as Active Additive to Portland Cement

Properties of Geopolymers Based on Metakaolin and Soda-Lime Waste Glass

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