Search results for "VISCOSITY OVER TIME"

showing 2 items of 2 documents

SURFACE AND MECHANISTIC PROPERTIES OF RECYCLED BITUMINOUS MIXTURES

2019

EXECUTIVE SUMMARY Problem Often, when the characteristics of a bituminous mixture are analised, there are major differences between in-lab and in-situ results. This is due to the fact that the procedures and techniques implemented during the design phase (in lab) may be different from those used on site. Then, is very important to be able to predict the main properties of a mixture particularly when innovative materials are used. For example, when crumb rubber is used, phisical and volumetric properties of mixes may change over time, in particular due to the swelling phenomenon that it alters different properties of the mixture (e.g., viscosity). This study aims to investigate the main aspe…

MICROTEXTUREVISCOSITY OVER TIMECRUMB RUBBERviscosità di masticiWORKABILITYproprietà meccaniche delle pavimentazioni stradalicompattabilità misceleLIFE CYCLE COST ANALYSISPAY ADJUSTMENTMASTIC VISCOSITYmicrotessiturametodi di progettazione di pavimentazioni stradaliCOMPACTABILITYRUTTINGpolverino di gommapenalitàproprietà superficiali delle pavimentazioni stradaliDRY PROCESSEXPECTED LIFESettore ICAR/04 - Strade Ferrovie Ed AeroportiKenPavegomma da pneumatici fuori usorigidezzaaggiustamento monetarioROAD SURFACE PROPERTIESM-EPDGMACROTEXTURESHORT-TERM OVEN AGINGROAD MECHANISTIC PROPERTIESSTIFFNESSAASHTO Guide 1993processo di compattazione interrottodeformazioni permanentiinvecchiamento a breve terminemacrotessituralavorabilità miscelevita attesaINTERRUPTED COMPACTION PROCESSanalisi del costo del ciclo di vitaPAVEMENT DESIGN METHODSSWELLING PHENOMENONMnPaveprocesso seccofenomeno di rigonfiamentomonitoraggio viscosità nel tempo
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Quality-control procedure for dry-process rubberised asphalt mastics

2019

Crumb Rubber (CR) can be incorporated into asphalt mixes via the dry process by directly adding CR into the mixer together with other asphalt mixture’s components, or with the wet process where the CR is used as a bitumen modifier. While the wet process allows an accurate monitoring of the interaction between CR and bitumen, the lack of control represents a main issue in the dry process. In fact, in the latter the CR particles keep swelling during hauling and possibly also after paving operations, often causing workability issues and premature failures. This study wants to provide a methodology that could help quality control procedures of bitumen/filler/rubber systems during mixing, haulin…

swelling proceasphalt mixtureMaterials sciencebusiness.industrymedia_common.quotation_subjectControl (management)pre-treatment of crumb rubberProcess (computing)Viscosity over timeQuality-controlrubberised asphalt masticdry-procereal-time viscosity measurementAsphaltSettore ICAR/04 - Strade Ferrovie Ed AeroportiQuality (business)Process engineeringbusinessCrumb Rubbermedia_common
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