Potentials for Using Mechanically Activated Concrete Powder in Stabilized Granular Pavement Mixtures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312467" target="_blank" >RIV/68407700:21110/17:00312467 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.springer.com/gp/book/9783319619071" target="_blank" >http://www.springer.com/gp/book/9783319619071</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-319-61908-8_15" target="_blank" >10.1007/978-3-319-61908-8_15</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Potentials for Using Mechanically Activated Concrete Powder in Stabilized Granular Pavement Mixtures

Popis výsledku v původním jazyce

Stabilization of granular materials is a common practice in transport infrastructure structures. It is used mainly for improving the roadbed or for achieving higher performance of base layers. The traditional approach is to use cement, lime hydrated, hydraulic road binder or standard fly-ash in mixing with soil or granular material (gravel) to get a hydraulically bond mixture which then shows improved bearing capacity and better resistance to water immersion or frost impacts. However, most of the binders (especially cement) show higher carbon footprint and represent therefore increased socio-economic cost of the structure. On the other hand, yearly many old structures are demolished and waste is created often containing huge volume of concrete material, which can be crushed and reused as a granular material. At the same time this material can be treated by high-speed milling (disintegration) process and it is possible to achieve a partial reactivation of the cement components in the concrete. This paper presents some of the achievements in soil stabilized materials and cold recycling mixtures where activated micromilled concrete powder/fine ground recycled concrete (FGRC) was used as an active filler or a binder substitute. The effect of the micromilled concrete powder with respect to its content or combination with other binders or additives is described further. Regular tests like Proctor Standard, CBR or compressive strength, indirect tensile strength or stiffness determination are done. The effect to act as an alternative binder is studied not only it terms of used content, but also with respect to its impact during test specimen curing. Finally, some recommendations are given in this paper with respect to the practical application of such material.

Název v anglickém jazyce

Potentials for Using Mechanically Activated Concrete Powder in Stabilized Granular Pavement Mixtures

Popis výsledku anglicky

Stabilization of granular materials is a common practice in transport infrastructure structures. It is used mainly for improving the roadbed or for achieving higher performance of base layers. The traditional approach is to use cement, lime hydrated, hydraulic road binder or standard fly-ash in mixing with soil or granular material (gravel) to get a hydraulically bond mixture which then shows improved bearing capacity and better resistance to water immersion or frost impacts. However, most of the binders (especially cement) show higher carbon footprint and represent therefore increased socio-economic cost of the structure. On the other hand, yearly many old structures are demolished and waste is created often containing huge volume of concrete material, which can be crushed and reused as a granular material. At the same time this material can be treated by high-speed milling (disintegration) process and it is possible to achieve a partial reactivation of the cement components in the concrete. This paper presents some of the achievements in soil stabilized materials and cold recycling mixtures where activated micromilled concrete powder/fine ground recycled concrete (FGRC) was used as an active filler or a binder substitute. The effect of the micromilled concrete powder with respect to its content or combination with other binders or additives is described further. Regular tests like Proctor Standard, CBR or compressive strength, indirect tensile strength or stiffness determination are done. The effect to act as an alternative binder is studied not only it terms of used content, but also with respect to its impact during test specimen curing. Finally, some recommendations are given in this paper with respect to the practical application of such material.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/TA04031256" target="_blank" >TA04031256: Rozvoj mechanicky aktivovaných materiálů na bázi recyklovaného betonu pro progresivní stabilizované a za studena recyklované konstrukční vrstvy</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Advancement in the Design and Performance of Sustainable Asphalt Pavements

ISBN

978-3-319-61908-8

ISSN

—

e-ISSN

2366-3413

Počet stran výsledku

18

Strana od-do

203-220

Název nakladatele

Springer International Publishing AG

Místo vydání

Cham

Místo konání akce

Sharm el-Sheikh

Datum konání akce

15. 7. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—