Influence of aggregate chemical and mineralogical composition on stripping in bituminous mixtures
2005 (English)In: The international journal of pavement engineering, ISSN 1029-8436, Vol. 6, no 4, 229-239 p.Article in journal (Refereed) Published
The influence of aggregate chemical and mineralogical composition on moisture sensitivity was investigated using 11 aggregates from typical tropical and temperate climates and one bitumen. Mix design and compaction were based on Swedish Road 94 hot mix base specifications and moisture damage was determined using resilient modulus and tensile strength ratios. As much as practically possible, air voids, gradation, compaction level, bitumen content and curing were controlled. Mixtures from aggregates containing sodium and potassium exhibited relatively high moisture sensitivity. The converse was apparent for aggregates with calcium, magnesium and iron. No significant correlation was observed between the strength ratios and contents of Al2O3 and SiO2. Stripping was generally high for aggregates with quartz and alkali feldspars, although one aggregate with practically 100% quartz showed low moisture sensitivity. Statistical analysis showed good correlation between resilient modulus and tensile strength ratios.
Place, publisher, year, edition, pages
2005. Vol. 6, no 4, 229-239 p.
Aggregate, Moisture sensitivity, Resilient modulus, Stripping, Tensile strength, Aggregates, Composition, Elastic moduli, Mixtures, Moisture, Statistical methods, Tensile strength, Moisture sensitivity, Resilient modulus, Stripping, Bituminous materials
Reliability and Maintenance
IdentifiersURN: urn:nbn:se:kth:diva-8933DOI: 10.1080/10298430500440796ScopusID: 2-s2.0-29744438426OAI: oai:DiVA.org:kth-8933DiVA: diva2:14423
QC 20100831. Tidigare titel: Influence of aggregate chemical and mineralogical composition on moisture sensitivity in bituminous mixtures. Titel ändrad och uppdaterad från Accepted till Published 20100831.2005-12-142005-12-142010-09-02Bibliographically approved