Optimization of mix-design of chemically resistant sprayed concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU131158" target="_blank" >RIV/00216305:26110/19:PU131158 - isvavai.cz</a>

Výsledek na webu

<a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/5646" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/5646</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2019.22.0026" target="_blank" >10.14311/APP.2019.22.0026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optimization of mix-design of chemically resistant sprayed concrete

Popis výsledku v původním jazyce

This paper addresses optimization of mix-design and granulometric curves of aggregate of chemically resistant sprayed mix based on cement binder. The target of the paper is improvement of properties of currently developed mix-design, which has no chemical resistance. The second target is use of secondary raw materials to reduce economic demands of manufacture of this mix. The mix was optimized by additions improving chemical resistance and binder substituted by secondary raw materials. The binder was substituted by finely ground waste glass and high-temperature fly ash. Binder was substituted with slag from deposit yard and waste soluble glass from steel manufacture. Main observed properties for design of optimized mix were workability time, consistence and physical-mechanical properties. Test specimens were subjected to testing of water absorbing capacity as potential indicator of chemical resistance. Optimized mix-design successfully replaced all fine parts of filler and up to 30% of binder while the physical-mechanical properties were preserved or even enhanced. Optimized mix-designs show the same consistencies and workability times. The outcome of this paper is sprayed mix with optimized mix-design with high density, excellent physicalmechanical properties and low water absorbing capacity. Its properties predetermine the mix-design to use in conditions with demanding exposition.

Název v anglickém jazyce

Optimization of mix-design of chemically resistant sprayed concrete

Popis výsledku anglicky

This paper addresses optimization of mix-design and granulometric curves of aggregate of chemically resistant sprayed mix based on cement binder. The target of the paper is improvement of properties of currently developed mix-design, which has no chemical resistance. The second target is use of secondary raw materials to reduce economic demands of manufacture of this mix. The mix was optimized by additions improving chemical resistance and binder substituted by secondary raw materials. The binder was substituted by finely ground waste glass and high-temperature fly ash. Binder was substituted with slag from deposit yard and waste soluble glass from steel manufacture. Main observed properties for design of optimized mix were workability time, consistence and physical-mechanical properties. Test specimens were subjected to testing of water absorbing capacity as potential indicator of chemical resistance. Optimized mix-design successfully replaced all fine parts of filler and up to 30% of binder while the physical-mechanical properties were preserved or even enhanced. Optimized mix-designs show the same consistencies and workability times. The outcome of this paper is sprayed mix with optimized mix-design with high density, excellent physicalmechanical properties and low water absorbing capacity. Its properties predetermine the mix-design to use in conditions with demanding exposition.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1408" target="_blank" >LO1408: AdMaS UP - Pokročilé stavební materiály, konstrukce a technologie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

SPECIAL CONCRETE AND COMPOSITES 2018

ISBN

978-80-86604-78-7

ISSN

2336-5382

e-ISSN

—

Počet stran výsledku

5

Strana od-do

26-30

Název nakladatele

Czech Technical University in Prague

Místo vydání

Praha

Místo konání akce

Skalský Dvůr

Datum konání akce

11. 10. 2018

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

000551055900006