scholarly journals Evaluation of the Possibility of Replacing Fly Ash with Glass Powder in Lower-Strength Concrete Mixes

2021 ◽  
Vol 11 (1) ◽  
pp. 396
Author(s):  
Robert Jurczak ◽  
Filip Szmatuła
Keyword(s):  
Fly Ash ◽  
Glass Powder ◽  
Testing Procedure ◽  
Waste Glass ◽  
Test Results ◽  
Lower Strength ◽  
Wide Margin ◽  
Strength Concrete ◽  
Waste Glass Powder ◽  
Recycled Waste

This article presents the results of research on the possibility of replacing fly ash with recycled waste glass in lower-strength concrete mixes. The results of testing concrete mixes containing either waste-glass powder or fly ash are presented in the article. A standard C12/15 concrete mix was chosen for the tests based on its common use for producing concrete for footings to support road kerbs and gutters along national roads in the Polish province of West Pomerania. In the first step of the testing procedure, reference mixes were prepared with 22.5% and 45% fly ash in relation to the content of cement. In the next step, mixes were prepared based on the same specification, except that glass powder was added in place of fly ash. The samples were then tested to determine the influence of waste-glass powder on the main properties of the prepared concrete mixes and on the performance of the concrete when hardened. All the samples were tested for 7 and 28-day compressive strength, water absorption, and freeze-thaw resistance in water. Next, the performance parameters of the samples containing waste-glass powder were compared to the reference mixes containing an equal amount of fly ash. The test results and their analysis allow us to conclude that mixes containing glass powder are not only equal to mixes containing fly ash, but even outperform them by a wide margin in terms of durability.

Evaluation of Glass Powder-Based Geopolymer Stabilized Road Bases Containing Recycled Waste Glass Aggregate

2020 ◽  
Vol 2674 (1) ◽  
pp. 22-32 ◽  
Author(s):  
Rui Xiao ◽  
Pawel Polaczyk ◽  
Miaomiao Zhang ◽  
Xi Jiang ◽  
Yiyuan Zhang ◽  
...  
Keyword(s):  
Glass Powder ◽  
Waste Glass ◽  
Curing Temperature ◽  
Mechanical Behaviors ◽  
Recycled Materials ◽  
Base Materials ◽  
Waste Glass Powder ◽  
Glass Aggregate ◽  
Pavement Base ◽  
Recycled Waste

As the concept of sustainable pavement gains prominence, a growing number of industrial wastes and recycled materials have been utilized in the pavement industry to preserve natural resources. This study investigates the potential use of waste glass powder-based geopolymer cement as a stabilizing agent in recycled waste glass aggregate (GA) bases. Two recycled materials, waste glass powder (GP) and class F fly ash (FF), were used as the raw materials in the preparation of geopolymer. Virgin aggregate (VA) was replaced by GA at varying replacement ratios as the pavement base materials, and the mechanical behaviors before and after geopolymer stabilization were evaluated. Without stabilization, the incorporation of over 10% GA caused significant detrimental effects on the California bearing ratios (CBR) of base materials, which should be carefully managed in pavement construction. However, all geopolymer stabilized samples showed decent strength properties, indicating the effectiveness of geopolymer stabilization. The use of GA reduced the drying shrinkage of base samples, although the mechanical properties were compromised. During the sample preparation, a higher curing temperature and relative humidity resulted in better mechanical behaviors, and the surface of GA could dissolve in alkaline solution and involve in the geopolymerization at 40°C. The microstructure and minerology of geopolymer stabilizer of base materials were characterized by scanning electron microscopy (SEM) and X-ray defraction (XRD) analyses. This study confirmed the promise of using waste glass-based pavement base materials as the greener substitutes and the potential synergy between waste glass recycling and the pavement industry.

Innovative thermal and acoustic insulation foam from recycled waste glass powder

2017 ◽  
Vol 165 ◽  
pp. 1306-1315 ◽  
Author(s):  
Giada Kyaw Oo D'Amore ◽  
Marco Caniato ◽  
Andrea Travan ◽  
Gianluca Turco ◽  
Lucia Marsich ◽  
...  
Keyword(s):  
Glass Powder ◽  
Waste Glass ◽  
Acoustic Insulation ◽  
Waste Glass Powder ◽  
Recycled Waste

scholarly journals Properties of Concrete with Waste Glass Powder (Gp) as Fine Aggregate Replacement

2019 ◽  
Vol 8 (2S11) ◽  
pp. 2308-2314
Keyword(s):  
Glass Powder ◽  
Fresh Concrete ◽  
Waste Glass ◽  
Test Results ◽  
Penetration Test ◽  
River Sand ◽  
Waste Glass Powder ◽  
Powder Content ◽  
Strength And Durability ◽  
Optimum Glass

In the present research, the feasibility of using waste glass as replacement for natural river sand was investigated. Glass wastes dumped in landfill pose environmental pollution and research on its reuse in construction industries need to be carried out . An experimental work was performed to study the slump , unit weight, compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, ultrasonic pulse velocity, dry density and chloride ion penetration test at different curing ages at 7, 14 and 28 days of concrete. Investigation on concrete properties with various % of glass powder (0%, 5%, 10%, 15% and 20% ) were done on fresh and hardened concrete. The complete stress-strain behaviour, mechanical strength and durability properties of concrete with partial replacement of natural river sand by glass powder were investigated through standard tests.The optimum glass powder content is found out by testing the specimens prepared using different grades of concrete (M20, M30, M40,M50 and M60). All the fresh concrete mixes were tested also for the workability properties by conducting slump cone tests. According to the test results, it is observed that the slump value of fresh concrete increase gradually with % of glass powder upto 40% replacements. The gradual increase in compressive strength, flexural strength and split tensile strength with the addition of waste glass powder upto 30% was observed. The addition of 40% and 50% replacements, the strength values of concrete are comparable with that of the control mix. The density and modulus of elasticity of concrete also gradually increases from 0% to 50% addition of glass powder in the concrete. The Rapid Chloride Penetration Test (RCPT) test results show that the chloride penetration rate is considerably reduced with addition of glass powder and permeability properties of concrete is enhanced upto 50% replacement levels. In order to prepare the concrete with compressive strengthThe optimum glass powder content is found to be 50% can be used as the replacement material for fine aggregates without much compromise on the strength and durability properties and to achieve economic and environmental benefits

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