Evaluation of fracture and moisture damage performance of wax modified asphalt mixtures

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Fältnamn	Indikatorer	Metadata
000		03134naa a2200385 4500
001		oai:DiVA.org:kth-98962
003		SwePub
008		120705s2012 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-989622 URI
024	7	a https://doi.org/10.1080/14680629.2011.6441202 DOI
040		a (SwePub)kth
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Das, Prabir Kumaru KTH,Väg- och banteknik4 aut0 (Swepub:kth)u1a0vtge
245	1 0	a Evaluation of fracture and moisture damage performance of wax modified asphalt mixtures
264	1	b Informa UK Limited,c 2012
338		a print2 rdacarrier
500		a QC 20120706
520		a In this study the fracture and moisture damage characteristics of wax modified asphalt mixtures were evaluated. Two types of commercial waxes (FT-paraffin and Asphaltan B) were added to bitumen of penetration grade 70/100. Using this wax modified and unmodified bitumen; total 48 specimens were produced from two sources of aggregates and two levels of gradation. Bitumen properties were determined by conventional test methods, Dynamic Shear Rheometer (DSR) and Bending Beam Rheometer (BBR) testing. Thermal Stress Restrained Specimen Test (TSRST) was used to evaluate low temperature cracking resistance and cracking behavior of asphalt mixture was investigated at 0 degrees C using Superpave Indirect Tensile Test (IDT). The influence of wax on the asphalt mixture resistance to cracking and moisture damage performance has been evaluated using Hot Mix Asphalt (HMA) fracture mechanics and Superpave IDT test results. The addition of FT-paraffin and Asphaltan B showed better cracking and moisture damage resistance of the asphalt mixture compared to unmodified mixture, but FT-paraffin showed the largest effect on cracking resistance while Asphaltan B showed highest resistance to moisture damage. In BBR test results, mixtures modified with FT-paraffin showed lower limit m value (LmT) which implies minor negative effect in stress relaxation. However, according to TSRST results, the mixtures with both waxes had nearly same fracture temperature as mixture with unmodified bitumen.
650	7	a TEKNIK OCH TEKNOLOGIERx Samhällsbyggnadsteknikx Infrastrukturteknik0 (SwePub)201042 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Civil Engineeringx Infrastructure Engineering0 (SwePub)201042 hsv//eng
653		a HMA fracture mechanics
653		a superpave IDT
653		a moisture damage
653		a cracking
653		a low temperature performance
653		a wax
700	1	a Tasdemir, Yukselu Bozok Univ, Yozgat, Turkey4 aut
700	1	a Birgisson, Björnu KTH,Väg- och banteknik4 aut0 (Swepub:kth)u1orr3zn
710	2	a KTHb Väg- och banteknik4 org
773	0	t International Journal on Road Materials and Pavement Designd : Informa UK Limitedg 13:1, s. 142-155q 13:1<142-155x 1468-0629x 2164-7402
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98962
856	4 8	u https://doi.org/10.1080/14680629.2011.644120

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