Recycled Polymer Materials as Aggregates for Concrete and Blocks

Rahman, Mostafizur; Islam, M. A.; Ahmed, Mainuddin; Salam, Abdus

doi:10.3329/jce.v27i1.15859

Cited by 16 publications

(9 citation statements)

References 6 publications

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“…These different and non-uniform shaped HDPE particles considerably fail in filling the voids with HDPE fine and coarse aggregates and obstruct the flow of the concrete mix, with the increase of HDPE fine and coarse aggregates [ 16 , 19 ]. The reason for the reduction of density in HDPE aggregate concrete with the increase of HDPE is mainly due to the difference in the densities of HDPE and sand and the lower unit weight of HDPE [ 14 , 23 ] The density of sand and HDPE is 1600 kg/m3 and 950 kg/m3, respectively, which is HDPE being about 40% lighter than the sand [ 14 ]. Therefore, the overall density of the HDPE fine aggregate concrete is decreased with the increase of HDPE content in concrete [ 15 ].…”

Section: Discussionmentioning

confidence: 99%

“…Hydrophobic nature of HDPE results in weaker bonds with lesser strength between cement/binder matrix and HDPE aggregates at the interfacial transition zone (ITZ) when compared with the ITZ formed between natural fine aggregates (sand) and cement paste, Figure 6 and Figure 7 [ 14 ]. These weaker bonds have resulted in reducing the compressive and tensile strengths and the modulus of elasticity of both HDPE fine and coarse aggregate concretes with the increase of recycled HDPE percentage [ 12 , 14 , 19 , 22 , 23 ]. Apart from the weaker bonds between cement paste and HDPE particles, hydrophobic effect further limits the inhibition of the cement hydration by restricting the movement of water, and may lead to reduce both durability and mechanical performances of HDPE fine and coarse aggregate concrete with the increase of HDPE [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

“…This reveals that a greater density drop could be achieved when the aggregate size is reduced from ¾′′ to ½′′ regardless of the HDPE inclusion percentage. Another notable observation is that the rate of reduction of dry density was 0.2% per volume percent of waste polymer added in HDPE coarse aggregate concrete [ 23 ].…”

Section: Use Of Hdpe As An Aggregate In Concretementioning

confidence: 99%

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Engineering Performance of Concrete Incorporated with Recycled High-Density Polyethylene (HDPE)—A Systematic Review

et al. 2021

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Incorporating recycled plastic waste in concrete manufacturing is one of the most ecologically and economically sustainable solutions for the rapid trends of annual plastic disposal and natural resource depletion worldwide. This paper comprehensively reviews the literature on engineering performance of recycled high-density polyethylene (HDPE) incorporated in concrete in the forms of aggregates or fiber or cementitious material. Optimum 28-days’ compressive and flexural strength of HDPE fine aggregate concrete is observed at HDPE-10 and splitting tensile strength at HDPE-5 whereas for HDPE coarse aggregate concrete, within the range of 10% to 15% of HDPE incorporation and at HDPE-15, respectively. Similarly, 28-days’ flexural and splitting tensile strength of HDPE fiber reinforced concrete is increased to an optimum of 4.9 MPa at HDPE-3 and 4.4 MPa at HDPE-3.5, respectively, and higher than the standard/plain concrete matrix (HDPE-0) in all HDPE inclusion levels. Hydrophobicity, smooth surface texture and non-reactivity of HDPE has resulted in weaker bonds between concrete matrix and HDPE and thereby reducing both mechanical and durability performances of HDPE concrete with the increase of HDPE. Overall, this is the first ever review to present and analyze the current state of the mechanical and durability performance of recycled HDPE as a sustainable construction material, hence, advancing the research into better performance and successful applications of HDPE concrete.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Use Of Hdpe As An Aggregate In Concretementioning

confidence: 99%

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Engineering Performance of Concrete Incorporated with Recycled High-Density Polyethylene (HDPE)—A Systematic Review

et al. 2021

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“…Rahman et al [11] investigated the suitability of the use of air-filled PET bottles for cavity wall construction. Their findings showed that the blocks produced performed satisfactorily as they met the required compressive strength for blocks used for cavity wall construction.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Compressive Strength of Sand-Filled Polyethylene Terephthalate Bottles as a Material for Wall Construction

Aterezi,

Dahunsi,

Onugba

2024

JERR

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The disposal of plastic wastes in the environment has negatively impacted the environment as plastics are non-biodegradable and contain chemicals that are harmful to humans, animals, plants, and the environment at large. The increased demand for infrastructure across the globe has also resulted in a rapid depletion of natural resources used for the production of construction materials. The need therefore arises for research to proffer solutions that would lead to the better management of plastic wastes, and provide sustainable construction materials. This study evaluated the compressive strength of sand-filled PET bottles (with varying moisture content, 0-15%) and clay bricks incorporating sand-filled PET bottles for wall construction. Cement was used to stabilize the clay at 0%, 10%, and 15% by weight. The compressive strength of the bricks produced was compared with that of control bricks (without sand-filled PET bottles). The results obtained reveal that the compressive strengths of the PET bricks were less than those of the control bricks. An optimum of 2% moisture content of sand is recommended for filling the PET bottles while 15% stabilization of clay with cement is recommended for the production of sand-filled PET bricks. The sand-filled PET bricks can be used for non-load-bearing wall construction as their compressive strengths fall below the minimum requirements of the Nigeria Building and Road Research Institute and the Standards Organization of Nigeria for load-bearing walls.

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“…Similarly, reduced compressive and tensile strengths were observed by the use of recovered high-density polyethylene (HDPE) from e-waste in concrete, regardless of the w/c ratio used [18,19].…”

Section: Introductionmentioning

confidence: 99%