scholarly journals Alkaline Activity of Portland Cement with Additives of Waste Glass

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1346
Author(s):  
Wiktor Szewczenko ◽  
Galyna Kotsay
Keyword(s):  
Portland Cement ◽  
Glass Powder ◽  
Waste Glass ◽  
Glass Waste ◽  
High Potassium ◽  
High Sodium ◽  
Mixed Alkali ◽  
Active Additive ◽  
Low Potassium ◽  
Alkaline Activity

The concept of the alkaline activity of powdered materials introduced into cement compositions has been proposed, along with methods for its determination. The possibility of using waste glass as an active additive to Portland cement was evaluated from the standpoint of alkaline activity. Replacing the Portland cement component with glass waste in the form of glass powder at amounts from 1 to 35% made it possible to maintain the cement composition’s alkaline activity at a level that met the standard requirements. The previously unknown effects of mixed alkali in Portland cement in the presence of glass waste are described. Portland cement has a high potassium alkaline activity; however, container glass has a high sodium alkaline activity and a fairly low potassium alkaline activity. When glass waste is introduced into the structure of cement compositions, potassium alkaline activity is reduced.

scholarly journals Alkali activated materials based on glass waste and slag for thermal and acoustic insulation

2019 ◽  
Vol 69 (335) ◽  
pp. 194 ◽  
Author(s):  
S. Stoleriu ◽  
I. N. Vlasceanu ◽  
C. Dima ◽  
A. I. Badanoiu ◽  
G. Voicu
Keyword(s):  
Thermal Treatment ◽  
Glass Powder ◽  
Waste Glass ◽  
Partial Substitution ◽  
Alkali Activation ◽  
High Porosity ◽  
Glass Waste ◽  
Activation Temperature ◽  
Waste Glass Powder ◽  
Alkali Activated

Porous alkali activated materials (AAM), can be obtained from waste glass powder and slag mixtures by alkali activation with NaOH solution. To obtain an adequate porous microstructure, the hardened AAM pastes were thermally treated at temperatures ranging between 900°C and 1000°C, for 60 or 30 minutes. Due to the intumescent behaviour specific for this type of materials, an important increase of the volume and porosity occurs during the thermal treatment. The partial substitution of waste glass powder with slag, determines the increase of compressive strength assessed before (up to 37 MPa) and after (around 10 MPa) thermal treatment; the increase of slag dosage also determines the increase of the activation temperature of the intumescent process (above 950°C). The high porosity and the specific microstructure (closed pores with various shapes and sizes) of these materials recommend them to be utilised as thermal and acoustical insulation materials.

scholarly journals Mechanical Properties of Mortars Containing Waste Glass Powder

2019 ◽  
Vol 50 (1) ◽  
pp. 30-34 ◽  
Author(s):  
Elżbieta Horszczaruk ◽  
Piotr Brzozowski
Keyword(s):  
Construction Industry ◽  
Co2 Emission ◽  
Glass Powder ◽  
Waste Glass ◽  
Partial Substitution ◽  
Partial Replacement ◽  
Glass Cullet ◽  
Glass Waste ◽  
Waste Glass Powder ◽  
Creative Construction

The utilization of solid waste materials or industrial waste as partial substitution of cement is growing in construction industry all around world. Less cement consumption causes consequently reduction in CO2 emission into the atmosphere and reduction in energy consumption. This paper examines the possibility of using finely ground waste glass as a partial replacement for cement and as a sealing admixture. Glass powder used in the research was prepared from the glass waste obtained from a local recycling company. Glass cullet made of brown glass, which after rinsing to remove sugars and other impurities, was dried and ground to a fraction below 125 μm.This paper is the revised version of the paper that has been published in the Proceedings of the Creative Construction Conference 2018 (Horszczaruk and Brzozowski, 2018).

scholarly journals Prospective of Glass Powder as Active Additive to Portland Cement

2015 ◽  
Vol 9 (2) ◽  
pp. 231-235
Author(s):  
Viktor Shevchenko ◽  
◽  
Galyna Kotsay ◽  
Keyword(s):  
Portland Cement ◽  
Glass Powder ◽  
Active Additive

scholarly journals A Review on Using ANOVA and RSM Modelling in The Glass Powder Replacement of The Concrete Ingredients

2021 ◽  
Vol 2 (02) ◽  
pp. 72-77
Author(s):  
Sevar Neamat ◽  
Masoud Hassan
Keyword(s):  
Glass Powder ◽  
Flat Glass ◽  
Silica Content ◽  
Waste Glass ◽  
Fine Dust ◽  
Glass Waste ◽  
Waste Glass Powder ◽  
Composite Face ◽  
Central Composite ◽  
Cement Compounds

The flat glass powder usage instead of sand is convenient in structurally serviceable and environmentally compatible concrete. The deposits of glass powder in fibres cement compounds manufacture may add significant technical, economic and environmental necessities. The cement material and cement replacement by glass powder is chosen as parameters of the concrete. When the waste glass is fined to very fine dust, it demonstrates a cementitious characteristic due to silica content. Statistical methods and techniques are heavily used in glass powder replacement. In this paper, fifteen papers are reviewed and investigated to check the availability of using the statistical and modelling system in discussing the glass powder replacement with some other ingredients results between 2012-2021. We found that most of the papers depended on the ANOVA test to perform their work. Moreover, central composite face-centred (CFC) and Response Surface Methodology (RSM) took a part in the studies. From the numerous replicas, a quadratic prototypical was supplied with waste glass powder in the numbers of the studies that the glass waste powder is the best with its characteristics.

Effect of Waste Glass on Portland Cement Hydration Process

2021 ◽  
Vol 325 ◽  
pp. 9-20
Author(s):  
Evaldas Serelis ◽  
Vitoldas Vaitkevicius
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Glass Powder ◽  
Cement Hydration ◽  
Test Methods ◽  
Waste Glass ◽  
Test Method ◽  
Hydration Process ◽  
Hardened Cement ◽  
Portland Cement Hydration

Glass is an amorphous material, which could be a good pozzolanic material and can be beneficial in compressive strength gain. However, if waste of glass powder has undesirable contaminations (aluminium, clay impurities, sulphates, etc.) it can negatively affect hydration process. In the research were used two types of waste glass (with and without harmful impurities). Waste glass shards were obtained from a local waste recycling plant and its properties were investigated in the Portland cement hydration process. Properties of waste glass were analysed by SEM, XRD test methods, pozzolanicity of glass powder was investigated by Chappelle test method. The hydration process of Portland cement was researched by the semi-adiabatic test method and XRD analysis. Properties of hardened cement paste was analysed by: density, flexural and compressive strength test methods The main aim of this research is to analyse waste glass, which after primary cleaning is not suitable for secondary reuse and investigate its suitability in cement-based systems.

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