Adhesion improvement between bitumen and mineral aggregate: theoretical principles and their impact on pavement structure lifetime

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00330081" target="_blank" >RIV/68407700:21110/18:00330081 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/19:00539234

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Adhesion improvement between bitumen and mineral aggregate: theoretical principles and their impact on pavement structure lifetime

Original language description

Pavement structures often fail due to insufficient interphase interaction between bituminous binder and mineral aggregate. A thin bituminous film covering aggregate particles is often replaced by water, resulting in bitumen-water-aggregate system, which is firmly linked to adhesion failure between these materials. This paper describes how to avoid this phenomenon using nanomaterial based admixtures – adhesion promoters maximizing the formation of intermolecular interactions between bitumen and aggregate surfaces. Physicochemical and topological principles about interaction between the two materials were described. Regular paving grade bitumen 50/70 was modified by additives based on: (i) alkylsilanes; (ii) phosphorus compounds; and (iii) amines. Mineral aggregate grains (maximal size of 16 mm, pre-heated on 160±5 °C) were covered by the thin film of reference and such modified binders (170±5 °C). In this way prepared samples were exposed to water (60 °C) for 60 minutes. After samples removing from water, their digital images were obtained and then an area of aggregate grains covered by the bituminous thin film was assessed using: (i) bitumen adhesion test; following relevant technical standards; (ii) digital image analysis based on both gray level thresholding and entropy-based segmentation. It was shown that adhesion of the bitumen to aggregate, expressed by aggregate particle coating area, was increased by almost 18 %, if adhesion promoters were used.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA18-13830S" target="_blank" >GA18-13830S: Comprehensive study on physicochemical interaction and related phenomena between bitumen and mineral aggregate by advanced experimental methods</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

NANOCON 2018 Conference Proceedings

ISBN

978-80-87294-89-5

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

192-197

Publisher name

Tanger Ltd.

Place of publication

Ostrava

Event location

Hotel Voronez I, Brno

Event date

Oct 17, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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