Physical-mechanical properties and durability of hydraulic lime-based mortars with non-traditional biopolymers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU132777" target="_blank" >RIV/00216305:26110/19:PU132777 - isvavai.cz</a>

Výsledek na webu

<a href="https://ojs.cvut.cz/ojs/index.php/APP/issue/view/677" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/issue/view/677</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2019.22.0150" target="_blank" >10.14311/APP.2019.22.0150</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Physical-mechanical properties and durability of hydraulic lime-based mortars with non-traditional biopolymers

Popis výsledku v původním jazyce

The study focuses on the influence of addition of four different biopolymers in various doses (0.1%, 0.5%, and 1%) on the physical-mechanical properties and durability of NHL 3.5 mortars prepared with constant water/binder ratio and the binder/aggregate ratio of 1 : 2 by weight. The flow table test was carried out and the specimens were tested for flexural and compressive strength at the age of 7 and 28 days. The durability coefficient for the flexural strength was calculated after 15 freezing-thawing cycles. All the admixtures have dosage-dependent slump reducing effect. The strengths were increased in comparison with mortar with no admixture, the most significantly in the case of highest dose of carrageenan and diutan gum. All biopolymers with the exception of diutan gum increased the durability coefficient with increasing dosage. Sodium salt of alginic acid has been found the most effective in the case of durability improvement.

Název v anglickém jazyce

Physical-mechanical properties and durability of hydraulic lime-based mortars with non-traditional biopolymers

Popis výsledku anglicky

The study focuses on the influence of addition of four different biopolymers in various doses (0.1%, 0.5%, and 1%) on the physical-mechanical properties and durability of NHL 3.5 mortars prepared with constant water/binder ratio and the binder/aggregate ratio of 1 : 2 by weight. The flow table test was carried out and the specimens were tested for flexural and compressive strength at the age of 7 and 28 days. The durability coefficient for the flexural strength was calculated after 15 freezing-thawing cycles. All the admixtures have dosage-dependent slump reducing effect. The strengths were increased in comparison with mortar with no admixture, the most significantly in the case of highest dose of carrageenan and diutan gum. All biopolymers with the exception of diutan gum increased the durability coefficient with increasing dosage. Sodium salt of alginic acid has been found the most effective in the case of durability improvement.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

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 Compoistes 2018

ISBN

978-80-01-06594-5

ISSN

2336-5382

e-ISSN

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Počet stran výsledku

5

Strana od-do

150-154

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

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