Performance evaluation of interlocking paving units in aggressive environments

Nouhy, Hanan A. El; Zeedan, Sayieda R.

doi:10.1016/j.hbrcj.2012.09.003

Cited by 11 publications

(2 citation statements)

References 4 publications

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“…Very few studies have been performed to measure the abrasion index of paving blocks. Nouhy et al [49] recorded an abrasion volume loss of 13.5 cm 3 per 50 cm 2 and an average thickness loss of 2.7 mm for a concrete paving block. Although this observed abrasion volume loss of the concrete paving block falls within the ASTM C936 [34] specifications, the char-based paving block has less thickness loss indicating a better resistance during traffic abrasion than the concrete paving block depicted in Figure 12.…”

Section: Abrasion Resistancementioning

confidence: 99%

New and Sustainable Coal Char-Based Paving Blocks for Roadway Applications

Pandey,

Yu,

Lau

et al. 2024

Buildings

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Paving blocks are widely used in engineering construction for durable pavement surfaces characterized by their interlocking capability to enhance structural integrity. This study explores the potential use of char as a byproduct from coal pyrolysis and an alternative raw material to natural aggregates in developing paving blocks, aiming to reduce the associated environmental issues associated with the uncontrolled and excessive mining of natural resources. This study finds the paving blocks made from char to have the required engineering properties as mentioned by ASTM standard C936. Trass and trass-lime are added as supplementary cementitious materials (SCMs) to enhance the performance of char-based paving blocks. The incorporation of SCMs as a cement replacement also aims to reduce the carbon footprint arising from increased cement use. The compressive strength increased from 55.7 MPa to 65.71 MPa at 12.5% cement replacement with trass-lime. The water absorption is reduced to 4.63% from 4.95%. Beneficial effects towards freeze–thaw durability and abrasion resistance are also observed on trass-lime-incorporated paving blocks. This study signifies the remarkable potential use of coal-derived char and SCMs in developing light, high-strength, and durable paving blocks, showcasing their competitive engineering performance. These new char-based paving blocks will contribute towards a more sustainable construction environment and advance the current construction and engineering practices.

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Section: Abrasion Resistancementioning

confidence: 99%

New and Sustainable Coal Char-Based Paving Blocks for Roadway Applications

Pandey,

Yu,

Lau

et al. 2024

Buildings

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“…They are laid on thin compacted bedding material paved over a profiled sub-base and suitable for areas of vehicles traveling with a speed less than 60 km/h [5]. Applications of paving blocks can be divided into light-duty (pavements, and footpaths), medium-duty (housing streets, and car parks), and heavy-duty (ports, and factory yards) categories [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Crumb Rubber and Coconut Coir on Strength and Durability Characteristics of Interlocking Paving Blocks

et al. 2022

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Interlocking Paving Blocks (IPB) are, nowadays, a widely used construction material. As a result of the surge in demand for IPBs, alternative materials have been investigated to be used for IPBs. This study investigated the strength and durability characteristics (compressive strength, split tensile strength, density, water absorption, skid resistance, and abrasion resistance) of IPBs in the presence of (waste materials) crumb rubber (CR) and coconut coir fibers (CCF). Both compressive and split tensile strength increased in the presence of CCF to a certain extent. CR-based IPBs showcased an increase in skid resistance that satisfied both SLS 1425 and BS EN 1338 specifications. Abrasion depths of CR-based and CCF-based samples show a comparable increase in values when the respective fraction (CR or CCF) increases. Therefore, this research fills the knowledge gap, highlighting the importance of incorporating waste materials (CR and CCF) for the IPB industry rather than open dumping.

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