caa a22 4500 467931046 CHVBK 20180406152943.0 cr unu---uuuuu 170328e20060801xx s 000 0 eng 10.1007/s10706-005-6610-9 doi (NATIONALLICENCE)springer-10.1007/s10706-005-6610-9 Engineering characteristics of road aggregates from northern Pakistan and the development of a toughness index [Elektronische Daten] [M. Kamal, M. Sulehri, D. Hughes] This paper summarizes an extensive series of common durability, shape and strength tests carried out on road aggregates from quarries in northern Pakistan by Sharif et al. at the University of Engineering and Technology, Taxila. The data from these standard tests have been correlated for a particular aggregate type to show the close relationship between these measured physical characteristics. The paper outlines how, once these relationships have been established for a particular aggregate source, it is feasible to simplify the testing or quality assurance regime and monitor only some of these characteristics to assess the overall quality of the aggregate. The physical characteristics have then been combined into a linear relationship, using coefficients estimated from the extensive data set in the paper, to give a single characteristic for an aggregate type known as the Toughness Index (TI). The TI is therefore based on the main strength and durability characteristics of the aggregates and can be used as an indicator of the overall quality of the aggregate. Springer, 2006 aggregate nationallicence durability nationallicence quality assurance nationallicence roadbase nationallicence strength nationallicence subbase nationallicence Toughness Index nationallicence unbound material nationallicence Kamal M. Department of Civil Engineering, University of Engineering and Technology, Taxila, Pakistan aut Sulehri M. Regional Manager, Nespak, Quetta, Pakistan aut Hughes D. School of Civil Engineering, The Queen's University of Belfast, BT7 1NN, Belfast, Northern Ireland, UK aut Geotechnical & Geological Engineering Kluwer Academic Publishers 24/4(2006-08-01), 819-831 0960-3182 24:4<819 2006 24 10706 https://doi.org/10.1007/s10706-005-6610-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10706-005-6610-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kamal M. Department of Civil Engineering, University of Engineering and Technology, Taxila, Pakistan aut NATIONALLICENCE 700 1- Sulehri M. Regional Manager, Nespak, Quetta, Pakistan aut NATIONALLICENCE 700 1- Hughes D. School of Civil Engineering, The Queen's University of Belfast, BT7 1NN, Belfast, Northern Ireland, UK aut NATIONALLICENCE 773 0- Geotechnical & Geological Engineering Kluwer Academic Publishers 24/4(2006-08-01), 819-831 0960-3182 24:4<819 2006 24 10706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer