eprintid: 10196430
rev_number: 7
eprint_status: archive
userid: 699
dir: disk0/10/19/64/30
datestamp: 2024-09-03 11:59:48
lastmod: 2024-09-03 11:59:48
status_changed: 2024-09-03 11:59:48
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Al-Mansour, Ahmed
creators_name: Xu, Chengji
creators_name: Yang, Rijiao
creators_name: Dai, Yuqing
creators_name: Dang, Nanxi
creators_name: Lan, Yan
creators_name: Zhang, Mingzhong
creators_name: Fu, Chuanqing
creators_name: Gong, Fuyuan
creators_name: Zeng, Qiang
title: Unleashing high-volume waste plastic recycling in sustainable cement mortar with synergistic matrix enabled by in-situ polymerization
ispublished: inpress
divisions: UCL
divisions: B04
divisions: F44
keywords: Waste plastic; In-situ polymerization; Interfacial transition zone; Microstructure.
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: The substantial energy consumption and CO2 emissions associated with the production and transportation of concrete and its components have necessitated the search for suitable replacements, particularly waste materials such as plastic, to mitigate their environmental impact. The emergent challenge of employing recycled waste plastics (RWP) in concrete centers around their poor interactions with the cement matrix. Here, a synergistic approach with in-situ polymerization by using sodium acrylate (SA) at various doses (0 %, 0.5 %, 1 %, 2 %) was employed to produce environmentally-friendly mortars. Recycled polypropylene (PP) particles were adopted as the aggregate to replace natural sand in cement mortar. Results indicate decreased water contact angel by 46 % and increased pull-off strength by 25 % for SA-polymerized PP. Moreover, mortars with 2 % SA exhibited a 31 % increase in compressive strength, a 64 % increase in flexural strength, a 76 % reduction in water sorptivity, and a 13.6 % decrease in total porosity. The formation of interconnected polymeric networks in the cement matrix and interfacial transition zone (ITZ) contributes to structural densification, highlighting the superior engineering properties. These findings present a promising pathway towards sustainable and resource-efficient building materials, fostering a circular economy for plastics.
date: 2024-10
date_type: published
publisher: Elsevier BV
official_url: http://dx.doi.org/10.1016/j.conbuildmat.2024.138031
full_text_type: other
language: eng
verified: verified_manual
elements_id: 2308898
doi: 10.1016/j.conbuildmat.2024.138031
lyricists_name: Zhang, Mingzhong
lyricists_id: MZHAA72
actors_name: Zhang, Mingzhong
actors_id: MZHAA72
actors_role: owner
full_text_status: restricted
publication: Construction and Building Materials
volume: 447
article_number: 138031
issn: 0950-0618
citation:        Al-Mansour, Ahmed;    Xu, Chengji;    Yang, Rijiao;    Dai, Yuqing;    Dang, Nanxi;    Lan, Yan;    Zhang, Mingzhong;             ... Zeng, Qiang; + view all <#>        Al-Mansour, Ahmed;  Xu, Chengji;  Yang, Rijiao;  Dai, Yuqing;  Dang, Nanxi;  Lan, Yan;  Zhang, Mingzhong;  Fu, Chuanqing;  Gong, Fuyuan;  Zeng, Qiang;   - view fewer <#>    (2024)    Unleashing high-volume waste plastic recycling in sustainable cement mortar with synergistic matrix enabled by in-situ polymerization.                   Construction and Building Materials , 447     , Article 138031.  10.1016/j.conbuildmat.2024.138031 <https://doi.org/10.1016/j.conbuildmat.2024.138031>.    (In press).   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10196430/1/Accepted%20Version.pdf