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Influence of Sustainable Grout Material on the Moisture Damage of Semi-flexible Pavement

Al-Nawasir, R, Al-Humeidawi, B and Shubbar, A (2024) Influence of Sustainable Grout Material on the Moisture Damage of Semi-flexible Pavement. Periodica Polytechnica Civil Engineering. ISSN 0553-6626

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Semi-flexible pavement (SFP), also known as grouted pavement, is a type of pavement structure consisting of a porous asphalt skeleton with air voids between 25 and 35% injected with cementitious grout materials. The special skeleton of SFP provided enhanced durability and resilience, making it a promising option for the construction of road surfaces in high-traffic areas and severe conditions. The main aim of the current research is to investigate the rutting behavior and moisture resilience of SFP-containing sustainable grout using ceramic waste powder (CWP). This research introduced the use of CWP as a replacement for conventional grout (cement) in SFP for the first time. CWP partially replaced cement at ratios of 15, 20, 30, 40, and 50% of the cement weight. Indirect Tensile Strength (ITS) and Hamburg Wheel Tracking Tests (HWTT) were used to evaluate the performance of SFP to reduce the detrimental effect of moisture. The grout modified with CWP shows excellent results in the ITS and Tensile Strength Ratio (TSR), and all modified SFP mixtures give higher values in these tests compared with Control Mix (CM). In the HWTT, the minimum rut depth of the modified SFP was 2.8 mm and 3.10 mm. Compared to CM, rutting decreased by 73%–76% for CWP mixes with 20% and 30% replacement. This indicates the high fluidity of CWP, which enabled it to penetrate all voids in the porous pavement (PA) and form a dense microstructure due to its excellent pozzolanic interaction, making it a strong structure capable of bearing rutting.

Item Type: Article
Uncontrolled Keywords: 0905 Civil Engineering; Civil Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Divisions: Civil Engineering & Built Environment
Publisher: Budapest University of Technology and Economics
SWORD Depositor: A Symplectic
Date Deposited: 20 May 2024 14:48
Last Modified: 20 May 2024 14:48
DOI or ID number: 10.3311/ppci.23373
URI: https://researchonline.ljmu.ac.uk/id/eprint/23310
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