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Feasibility of making concrete using lignite coal bottom ash as fine aggregate

T.S. Thandavamoorthy
Archives of Civil Engineering | 2015 | No 3 | 19-30
Keywords concrete bottom ash fine aggregate strength, durability
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Abstract

Concrete is generally produced using materials such as crushed stone and river sand to the extent of about 80‒90% combined with cement and water. These materials are quarried from natural sources. Their depletion will cause strain on the environment. To prevent this, bottom ash produced at thermal power plants by burning of coal has been utilized in this investigation into making concrete. The experimental investigation presents the development of concrete containing lignite coal bottom ash as fine aggregate in various percentages of 25, 50, and 100. Compressive, split tensile, and flexural strength as part of mechanical properties; acid, sulphate attack, and sustainability under elevated temperature as part of durability properties, were determined. These properties were compared with that of normal concrete. It was concluded from this investigation that bottom ash to an extent of 25% can be substituted in place of river sand in the production of concrete.

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Authors and Affiliations

T.S. Thandavamoorthy

Experimental investigation of using recycled glass waste as fine aggregate replacement in concrete

Salam Salman Chiad Alharishawi Nagham Rajaa Aqeel Raheem Jabur
Archives of Civil Engineering | 2021 | vol. 67 | No 4 | 27-38 | DOI: 10.24425/ace.2021.138484
Keywords crushed waste glass partial replacement of fine aggregate normal concrete disposal problem mechanical properties
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Abstract

Environmental problems are considered a serious situation in modern construction. Reusing and recycling glass wastes is the only method to decrease waste produced. There is growing environmental compression to decrease glass waste and to reprocess as much as possible. In this investigational work, the effect of partially substituting crushed waste glass in concrete is considered. The study investigates crushed waste glass used as a partial replacement of fine aggregate for new concrete. recycled glass waste was partially replaced as 5%, 10%, 15%, 20%, 25%, 30, 35, 40%, 45%, 45% and 50% and tested at 7, 14 and 28 days of curing at 20◦ for mechanical properties and compared with those of controlled mix. The compressive strength, splitting tensile strength and flexural forces and static elasticity modulus of specimens with 20% waste glass content was 30%, 19.41%, 9.13% and 10.12%, respectively, which is higher than the controlled mix at 28 days. The outcomes displayed that the maximum rise in strength of concrete occurred when 20% replacement with glass crush. It is found that crushed waste glass can be used as fine aggregate replacement material in concrete production.
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Bibliography

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Authors and Affiliations

Salam Salman Chiad Alharishawi
1
ORCID: ORCID
Nagham Rajaa
2
ORCID: ORCID
Aqeel Raheem Jabur
3
ORCID: ORCID
  1. Mustansiriyah University, College of Engineering, Environmental Engineering Department, Baghdad, Iraq
  2. Mustansiriyah University, College of Engineering, Highway and Transportation Engineering Department, Baghdad, Iraq
  3. Mustansiriyah University, College of Engineering, Civil Engineering Department, Baghdad, Iraq

A performance study on partial replacement of polymer industries waste (PIW) as fine aggregate in concrete

K. Srinivasan J. Premalatha S. Srigeethaa
Archives of Civil Engineering | 2018 | Vol. 64 | No 3 | 45-56
Keywords polymer industrial waste (PIW) Compressive Strength Split Tensile Flexure Fine aggregate
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Abstract

Recycling of plastic wastes helps in reducing waste disposal problems and helps for the sustainable development of the country. Concrete with various % (0 to 55%) of waste plastic aggregates were tested for their mechanical strength properties. In the present work, plastic aggregates obtained as end product of a polymer recycle industry in the form of grains called as plastic aggregates are used as fine aggregate replacements in concrete. The addition of plastic aggregate as fine aggregate replacements results in increase in compressive strength, split tensile strength and flexural strength and thus helps in production of sustainable concrete. It is observed that, the optimum % of replacement of sand with waste plastic waste is 40% and it is also found that upto55% of sand replacements with plastic wastes, mechanical strength values are comparable with that of the normal concrete.

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Authors and Affiliations

K. Srinivasan
J. Premalatha
S. Srigeethaa

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