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Employment of Recycled Wood Waste in Lightweight Concrete Production

Salam Salman Chiad Alharishawi Haitham Jameel Abd Suha Rasheed Abass

Archives of Civil Engineering | Vol. 66 | No 4 | 675-688 | DOI: 10.24425/ace.2020.135244

Keywords Lightweight concrete lightweight aggregate concrete Sawdust Wood fiber Wood waste Normal concrete

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Abstract

The by-products of wood sawdust and wood fiber are considered to be waste material. It is utilized in the construction of buildings in the form of sawdust concrete or wood fiber concrete. It is used to make lightweight concrete and possesses heat transfer of a long duration. In this study, wood concrete was made at eleven different mix proportions of cement to wood waste by weight, to produce a lightweight concrete aggregate that has the density 1508-2122 kg/m3. The experimental work consists of 330 concrete specimens as 99 cubes (150 * 150 * 150) mm, 165 cylinders (150 * 300) mm, 33 prisms (50 * 100 * 200) mm, and 33 prisms (100 * 100 * 500) mm. Mechanical and thermal properties such as stiffness, workability, compressive strength, static elasticity modulus, flexural forces, splitting tensile strength and density were examined in the specimens after 28 days of 20 oC curing. Also, compressive strength was investigated at 7 and 14 days of curing at 20 oC. The basic observation of the results shows the values with the limitations of ACI and ASTM. Moreover, it is the perfect way to reduce solid wood waste and produce lightweight concrete to be used in industrial construction. It was found that with the increase in the quantity of wood waste, the strength decreased; however, in terms of workability and concrete with a higher quantity of wood waste held very well. Lightweight concrete aggregate is around 25 percent lighter in dead load than standard concrete. Given all the physical and mechanical properties, the study finds that wood concrete can be used in the construction of buildings.

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Authors and Affiliations

Salam Salman Chiad Alharishawi

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ORCID:

Haitham Jameel Abd

Suha Rasheed Abass

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

e-mail:

ORCID:

Nagham Rajaa

e-mail:

ORCID:

Aqeel Raheem Jabur

e-mail:

ORCID:

Mustansiriyah University, College of Engineering, Environmental Engineering Department, Baghdad, Iraq
Mustansiriyah University, College of Engineering, Highway and Transportation Engineering Department, Baghdad, Iraq
Mustansiriyah University, College of Engineering, Civil Engineering Department, Baghdad, Iraq

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Employment of Recycled Wood Waste in Lightweight Concrete Production

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

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Authors and Affiliations