Universiti Teknologi Malaysia Institutional Repository

Aggregate angularity effect on porous asphalt engineering properties and performance

Tarmuzi, Nadhir Ahmad and Jaya, Ramadhansyah Putra and Yaacob, Haryati and Abdul Hassan, Norhidayah and Aziz, Md. Maniruzzaman (2015) Aggregate angularity effect on porous asphalt engineering properties and performance. Jurnal Teknologi, 73 (4). pp. 99-104. ISSN 2180–3722

Full text not available from this repository.

Official URL: http://dx.doi.org/10.11113/jt.v73.4301

Abstract

Porous asphalt is a flexible pavement layer with highly interconnected air voids constructed using an opengraded type of aggregate. The aggregate shape and surface texture serve a vital function in determining the engineering properties and performance of porous asphalt. The angular aggregates with clearly defined fracture faces and sharp edges encourage better interlocking between the aggregates' skeleton structures, which makes them preferable to use in asphalt mixtures. This study evaluates the effect of aggregate angularity on the engineering properties and performance of porous asphalt using both conventional and empirical particle index test methods. The term “engineering properties” refers to the experimental works determining resilient modulus and stability, whereas “performance” deals with the porosity and durability characteristics of porous asphalt caused by variations in the particle index number (Ia). A laboratory data analysis shows that angular particles provide a larger Ia number than non-angular particles. Furthermore, resilient modulus and stability properties significantly improve when angular aggregates are applied. The angular particles provide high mixture porosity but cause poor durability performance of porous asphalt against abrasion loss. Some improvements are suggested to enhance the strength properties and performance of porous asphalt on the basis of engineering applications.

Item Type:Article
Uncontrolled Keywords:particle index, properties
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:57715
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 04:07
Last Modified:01 Nov 2017 04:16

Repository Staff Only: item control page