Flexural and Compressive Strength of the Cement Paste with Recycled Concrete Powder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00306332" target="_blank" >RIV/68407700:21110/16:00306332 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scientific.net/AMR.1144.65.pdf" target="_blank" >http://www.scientific.net/AMR.1144.65.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.1144.65" target="_blank" >10.4028/www.scientific.net/AMR.1144.65</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Flexural and Compressive Strength of the Cement Paste with Recycled Concrete Powder

Popis výsledku v původním jazyce

In previous work focused on using recycled concrete powder as cement replacement the basic dependency of the mechanical properties on the amount of recycled concrete powder was defined. Influence of the amount of recycled concrete powder on the flexural and compressive strength was shown on 0, 33, 67 and 100 wt. % cement replacement. Based on the previous data the strength properties of the cement paste with recycled concrete powder below 33 wt. % was almost constant and strength properties were comparable with a reference sample made of cement only. After the recycled concrete powder in cement paste exceeded amount of 33 wt. % the flexural and compressive strength decreased rapidly. In case of 67 wt. % amount of recycled concrete powder the compressive strength decreased about 65 %. The aim of this article is to define critical amount of recycled concrete powder in cement paste when strength properties start decrease rapidly and cement replacement is no longer beneficial. This critical amount will be located somewhere between 30 and 50 wt. % of recycled concrete powder. Replacement below critical amount could lead to cost reduction of cement composites and also the negative impact of the cement production and concrete disposal on environmental could be reduced.

Název v anglickém jazyce

Flexural and Compressive Strength of the Cement Paste with Recycled Concrete Powder

Popis výsledku anglicky

In previous work focused on using recycled concrete powder as cement replacement the basic dependency of the mechanical properties on the amount of recycled concrete powder was defined. Influence of the amount of recycled concrete powder on the flexural and compressive strength was shown on 0, 33, 67 and 100 wt. % cement replacement. Based on the previous data the strength properties of the cement paste with recycled concrete powder below 33 wt. % was almost constant and strength properties were comparable with a reference sample made of cement only. After the recycled concrete powder in cement paste exceeded amount of 33 wt. % the flexural and compressive strength decreased rapidly. In case of 67 wt. % amount of recycled concrete powder the compressive strength decreased about 65 %. The aim of this article is to define critical amount of recycled concrete powder in cement paste when strength properties start decrease rapidly and cement replacement is no longer beneficial. This critical amount will be located somewhere between 30 and 50 wt. % of recycled concrete powder. Replacement below critical amount could lead to cost reduction of cement composites and also the negative impact of the cement production and concrete disposal on environmental could be reduced.

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Modern Methods of Experimental and Computational Investigations in Area of Construction II

ISBN

978-3-0357-1092-2

ISSN

1022-6680

e-ISSN

—

Počet stran výsledku

5

Strana od-do

65-69

Název nakladatele

Trans Tech Publications Inc.

Místo vydání

Pfaffikon

Místo konání akce

Praha

Datum konání akce

22. 9. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—