Experience with designing and in-situ verification of cold emulsified mixes in the Czech Republic

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00232737" target="_blank" >RIV/68407700:21110/15:00232737 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1201/b18538-121" target="_blank" >http://dx.doi.org/10.1201/b18538-121</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1201/b18538-121" target="_blank" >10.1201/b18538-121</a>

Result language

angličtina

Original language name

Experience with designing and in-situ verification of cold emulsified mixes in the Czech Republic

Original language description

The presented paper will summarize results of experimental research done by the Czech Technical University in Prague in the field of developing sound design method and ongoing assessment of designed and tested cold emulsified mixes. The objective of this activity was to monitor and evaluate selected physical and mechanical properties of the mixes as well as performance based testing (such as stiffness, rutting resistance) in relation to the methodology of mix and test specimens´ preparation. Nevertheless the real behaviour of a mix in a pavement structure cannot be fully and exactly cut up by laboratory tests, therefore in the next step to gain additional experimental data more than 1.5 km long trial section was prepared. The aim of the project was to verify on a suitable road section within the road network in CZ cold emulsified mix technology as a part of a standard pavement structure. For this pavement original structure and dimensions were known, as well as its overall technical condition and real traffic loading. Therefore it is possible for the near future to monitor the behaviour of this technology under real traffic loading and climatic conditions. Selected rural road was of low traffic category road III/44441. Because of its bad technical condition and necessary reconstruction the base layer was firstly in-situ cold recycled. Aggregates for the emulsified mixes were taken from a local quarry and the used emulsion (slow-breaking cationic bituminous emulsion C60B7) was designed exactly for this type of aggregates in close cooperation with MeadWestVaco. Used emulsifier and its content were optimized with respect to final mix quality and good workability. Trial job site was divided in 6 sections with 5 different pavement structure compositions, which should check the designed cold emulsified mixes in wearing as well as in binder course. The analysis of so far gained findings and results are presented in the paper.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JM - Structural engineering

OECD FORD branch

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Project

<a href="/en/project/TE01020168" target="_blank" >TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)</a><br>

Continuities

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

Publication year

2015

Confidentiality

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

Article name in the collection

Bituminous Mixtures and Pavements VI

ISBN

978-1-138-02866-1

ISSN

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e-ISSN

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Number of pages

10

Pages from-to

849-858

Publisher name

Taylor & Francis/Balkema

Place of publication

Leiden

Event location

Thessaloniki

Event date

Jun 10, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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