Importance of Thermal Contraction Coefficient in Low Temperature Cracking of Asphalt Concrete

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Fältnamn	Indikatorer	Metadata
000		03413naa a2200337 4500
001		oai:DiVA.org:kth-248697
003		SwePub
008		190409s2016 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2486972 URI
040		a (SwePub)kth
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a kon2 swepub-publicationtype
100	1	a Das, Prabir4 aut
245	1 0	a Importance of Thermal Contraction Coefficient in Low Temperature Cracking of Asphalt Concrete
264	1	c 2016
338		a print2 rdacarrier
500		a QC 20190513
520		a A major distress mode in asphalt pavements is low temperature cracking, which results from the contraction and expansion of the asphalt pavement under extreme temperature changes. The potential for thermal cracking involves interplay between the environment, the road structure, and importantly the properties of the asphalt mixture. In the present study, the low temperature cracking performance of asphalt mixture has been investigated numerically and experimentally. A low temperature cracking model has been utilized, which was developed by integrating fracture energy threshold into an asphalt concrete thermal fracture model considering non-linear thermal contraction coefficients. Based on the asphalt concrete mixture viscoelastic properties, this enhanced model can predict thermally-induced stresses and fracture temperatures. It was observed that the thermal contraction coefficient in asphalt concrete is non-linear in the temperature range of interest for low temperature cracking. The implications of having non-linear thermal contraction coefficient were investigated numerically. From the analysis, it was found that this enhanced model can be utilized to evaluate the low temperature cracking performance of asphalt mixtures and rank them accordingly. Interestingly, non-linear thermal contraction coefficient gave much better prediction than the linear approach.
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 Bituminous mixtures; Conferences; Cracking; Flexible pavements; Freeze thaw durability; Frost damage
653		a Byggvetenskap
653		a Civil and Architectural Engineering
700	1	a Birgisson, Bjorn4 aut
700	1	a Jelagin, Denis,c Docent,d 1979-u KTH,Byggnadsmaterial4 aut0 (Swepub:kth)u1mpz2x5
710	2	a KTHb Byggnadsmaterial4 org
773	0	t Proceedings of the Fifty-Ninth Annual Conference of the Canadian Technical Asphalt Association (CTAA): Winnipeg, Manitoba
856	4	u https://trid.trb.org/Results?txtKeywords=&txtTitle=Importance%20of%20Thermal%20Contraction%20Coefficient%20in%20Low%20Temperature%20Cracking%20of%20Asphalt%20Concrete&txtSerial=%22Proceedings%20of%20the%20Fifty-Ninth%20Annual%20Conference%20of%20the%20Canadian%20Technical%20Asphalt%20Association%20(CTAA)%3A%20Winnipeg%2C%20Manitoba%22&ddlSubject=&txtReportNum=&ddlTrisfile=&txtIndex=%20&specificTerms=&txtAgency=&txtAuthor=&ddlResultType=&chkFulltextOnly=0&recordLanguage=&subjectLogic=or&dateStart=&dateEnd=&rangeType=publisheddate&sortBy=&sortOrder=DESC&rpp=25#/View/1399559y Abstract
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-248697

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