Characterization of quarry dusts and industrial by-products as potential substitutes for traditional fillers and their impact on water susceptibility of asphalt concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00350749" target="_blank" >RIV/68407700:21110/21:00350749 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10442286

Výsledek na webu

<a href="https://doi.org/10.1016/j.conbuildmat.2021.124294" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2021.124294</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2021.124294" target="_blank" >10.1016/j.conbuildmat.2021.124294</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of quarry dusts and industrial by-products as potential substitutes for traditional fillers and their impact on water susceptibility of asphalt concrete

Popis výsledku v původním jazyce

Mixing, paving, and compaction of hot asphalt mixtures results in the formation of a three-phase system in which aggregates are represented in different fractions including subsieve particles (<0.063 mm), referred to as filler material. Larger particles interlock and form a skeleton, while the bituminous binder bonds individual grains together. Two filler types are commonly used for the production of asphalt mixtures: (i) lime, hydrated lime, or portland cement and (ii) fine particles retained in the separation units of a mixing plant (known as back/back-house filler) or those separated during aggregate production in quarries (quarry dust). We investigated the impact of several quarry dusts or back fillers as well as of selected treated by-products such as blast furnace slag, finely ground waste gypsum boards, or recycled concrete, all potentially applicable as alternative fillers. Different approaches were adopted to characterize these fillers and assess their impact on the adhesion between bitumen and aggregate in the presence of water, stripping resistance, and effect on the stiffness of the asphalt mixture. The results indicate that the effect of blast furnace slag or recycled concrete is superior to some conventional fillers and that mixing quarry dusts with portland cement or talc is beneficial for rendering the originally hydrophilic dusts more hydrophobic.

Název v anglickém jazyce

Characterization of quarry dusts and industrial by-products as potential substitutes for traditional fillers and their impact on water susceptibility of asphalt concrete

Popis výsledku anglicky

Mixing, paving, and compaction of hot asphalt mixtures results in the formation of a three-phase system in which aggregates are represented in different fractions including subsieve particles (<0.063 mm), referred to as filler material. Larger particles interlock and form a skeleton, while the bituminous binder bonds individual grains together. Two filler types are commonly used for the production of asphalt mixtures: (i) lime, hydrated lime, or portland cement and (ii) fine particles retained in the separation units of a mixing plant (known as back/back-house filler) or those separated during aggregate production in quarries (quarry dust). We investigated the impact of several quarry dusts or back fillers as well as of selected treated by-products such as blast furnace slag, finely ground waste gypsum boards, or recycled concrete, all potentially applicable as alternative fillers. Different approaches were adopted to characterize these fillers and assess their impact on the adhesion between bitumen and aggregate in the presence of water, stripping resistance, and effect on the stiffness of the asphalt mixture. The results indicate that the effect of blast furnace slag or recycled concrete is superior to some conventional fillers and that mixing quarry dusts with portland cement or talc is beneficial for rendering the originally hydrophilic dusts more hydrophobic.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA18-13830S" target="_blank" >GA18-13830S: Podrobný výzkum fyzikálně-chemické interakce a souvisejících jevů mezi asfaltem a kamenivem pomocí pokročilých experimentálních metod</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Construction and Building Materials

ISSN

0950-0618

e-ISSN

1879-0526

Svazek periodika

2021

Číslo periodika v rámci svazku

301

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000687400900005

EID výsledku v databázi Scopus

2-s2.0-85111620492