Influence of Waste Glass on the Physical Properties of Portland Cement Concrete

2014 ◽  
Vol 798-799 ◽  
pp. 576-581 ◽  
Author(s):  
Edson Jansen Pedrosa Miranda Jr. ◽  
A.E.M. Paiva ◽  
Ermerson Ney Leite Rodrigues

A differential feature of this work was the use of a type of glass that is little used as fine aggregate in concrete – flat glass powder. This study involved an analysis of the influence of the incorporation of waste glass from the grinding and polishing operations of the glass heat treatment process on the void content, water absorption (W/A) and specific gravity of Portland cement concrete. The coarse and fine aggregates used here were crushed stone and sand, respectively. The concrete was produced using 5%, 10% and 20% of waste glass in place of sand, and water-to-cement (w/c) ratios of 0.50, 0.55 and 0.58. The test specimens were cured for 28 days. The results indicated a reduction in the void content when the percentage of waste glass increased to w/c ratios of 0.55 and 0.58. The reduction of the void content reduced the concrete’s W/A and increased its specific gravity. The waste glass used in this study shows a promising potential for use as fine aggregate in Portland cement concrete. However, other variables must be taken into consideration in the subsequent publications.

2016 ◽  
Vol 881 ◽  
pp. 259-264
Author(s):  
Edson Jansen Pedrosa Miranda Jr. ◽  
A.E.M. Paiva

A differential feature of this study was the analysis of the slump test and microstructure of Portland cement concrete containing a little-studied type of waste – flat glass powder. The concrete was produced using 5%, 10% and 20% (by mass) of waste glass in place of sand, and water-to-cement (w/c) ratios of 0.50, 0.55 and 0.58. The slump of concrete decreased with increasing glass powder content at the three w/c ratios and its fluidity was impaired with 20% of waste glass at the w/c ratio of 0.50. A scanning electron microscopy analysis revealed a reduction in voids as the waste glass content increased from 0% to 10%. At the above mentioned percentages, flat glass powder shows a promising potential for use as fine aggregate in Portland cement concrete. However, the use of plasticizers should be considered for concrete with low w/c ratios (less than 0.50) and high waste glass percentages (more than 20%).


2012 ◽  
Vol 174-177 ◽  
pp. 76-81 ◽  
Author(s):  
Ju Nan Shen ◽  
Zhao Xing Xie ◽  
David Griggs ◽  
Yao Zhong Shi

The focus of this study was to determine the feasibility of using kaolin, a very small particle clay, as partial replacement of fine aggregates in Portland cement concrete (PCC). Kaolin clay is a locally available (Macon, GA, USA) and inexpensive clay mineral. The product, KaMin 90©, used has an average particle size of 1.5 microns and has a low embodied energy. The slump, air void content and compressive strength were examined on samples of PCC with different % of Kaolin. This research indicated the maximum kaolin substitution of fine aggregate for workability. An optimal dosage range for PCC cylinder compressive strength was also defined and found to be 33% greater than the control group. It was also noted that Kaolin engenders a soft and cohesive concrete mix that prevents segregation. A brief cost analyses was performed and determined the economic feasibility of Kaolin PCC.


2012 ◽  
Vol 204-208 ◽  
pp. 3137-3141
Author(s):  
Hong Xia Qiao ◽  
Yu Li ◽  
Zhong Mao He ◽  
Jin Mei Dong

Aiming at determining the durability of concrete in very salty regions, this study examines the performance of various high performance fine aggregate concretes in a sulfate environment, such as high performance concrete inside a composite additive, and Portland cement concrete and sulfate resistant cement concrete, all of which experienced dry-wet cycles in sodium sulfate solutions. By examining the changes of elastic moduli and analyzing the SEM of the concrete, this paper has found that the salt resistance of sulfate resistant cement concrete is no better than that of Portland cement concrete in the extremely aggressive dry-wet cycle environment but high performance concrete containing a composite additive has better resistance in a sulfate environment. Besides, the composite additive can create the environment for a second hydration to reduce the amount of Ca(OH)2 inside the concrete, and build additional C-S-H gel to reform the microstructure of concrete effectively. Finally, the paper offers some advice for mixing concrete in salt regions.


2014 ◽  
Vol 17 (suppl 1) ◽  
pp. 45-50 ◽  
Author(s):  
Edson Jansen Pedrosa de Miranda Júnior ◽  
Helton de Jesus Costa Leite Bezerra ◽  
Flávio Salgado Politi ◽  
Antônio Ernandes Macêdo Paiva

2018 ◽  
Vol 7 (1.8) ◽  
pp. 241
Author(s):  
Kiran Kumar ◽  
Vineetha Anil ◽  
Sara Hamed ◽  
Ruwa Malik

The reason of this attempt was to demonstrate that seashells can be utilized as a partial replacement for fine aggregate in concrete for enhancing strength properties. Since seashells are widely available everywhere in coastal and seashore areas, and some of the concrete materials cannot be found easily everywhere.  The strategies utilized as a part of this attempt was to replace burnt and crushed seashells with fine aggregate at 10%, 20% and 30% and compare it with each other and the traditional Ordinary Portland Cement concrete regarding mechanical properties following 7 and 28 days. In conclusion, despite the fact that seashells are generally accessible and can be effortlessly gathered from seashore and beach front regions, the process of burning and crushing requires a lot of energy and is tedious. In spite of the fact that the results demonstrated that utilizing 20% seashell to fine aggregate substitution has a somewhat higher in compressive and flexural properties than that of Ordinary Portland Cement concrete.


2010 ◽  
Vol 113-116 ◽  
pp. 1371-1374 ◽  
Author(s):  
Hong Xia Qiao ◽  
Hong Fa Yu ◽  
Zhong Mao He

Aimed at determining the durability of concrete in very salty regions, this paper describes a study carried out to examine the performance of various high performance fine aggregate concrete in a sulfate environment, such as high performance concrete inside a composite additive, and Portland cement concrete, and sulfate resistant cement concrete. They experienced dry-wet cycles in sodium sulfate solutions. By examining the changes of elastic moduli and analyzing the SEM of the concrete, the test results show that the salt resistances of sulfate resistant cement concrete is no better than Portland cement concrete in the extremely aggressive dry-wet cycle environment, and high performance concrete containing a composite additive has better resistance to a sulfate environment. Besides, the composite additive can create the environment for a second hydration to reduce the amount of Ca(OH)2 inside the concrete, and build additional C-S-H gel to reform the microstructure of concrete effectively. Finally, the paper offers some advice for mixing concrete in salt regions.


1998 ◽  
Vol 10 (4) ◽  
pp. 210-219 ◽  
Author(s):  
Craig Polley ◽  
Steven M. Cramer ◽  
Rodolfo V. de la Cruz

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