Structure of Polymer-Cement Composite optimized with Secondary Raw Materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F18%3A00351485" target="_blank" >RIV/68407700:21610/18:00351485 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.31448/mstj.01.01.2018.26-31" target="_blank" >https://doi.org/10.31448/mstj.01.01.2018.26-31</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31448/mstj.01.01.2018.26-31" target="_blank" >10.31448/mstj.01.01.2018.26-31</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structure of Polymer-Cement Composite optimized with Secondary Raw Materials

Popis výsledku v původním jazyce

This paper focuses on possibilities of use of selected secondary raw materials for modification of developed high strength coating based on polymer-cement. The aim is achieving the same or better physical-mechanical properties of resulting material at maximal level of substitution of cement with secondary raw materials. Because of high contents of amorphous SiO2 two secondary raw materials were selected: high temperature fly ash and recycled soda-lime glass to replace cement by 20 and 40% by weight. These secondary raw materials were pre-treated in ball grinder to specific surface of the substituted Portland cement CEM I 42.5 R, 300 m2*kg-1 and specific surface 400 m2*kg-1 (±50 m2*kg-1). Selected test specimens were subjected to compressive strengthdetermination after 3, 28 and 90 days. Samples of selected mix-designs were subjected to Computed Tomography to determine influence of substitution of cement with individual additions on structure of polymer-cement composite. The main finding is that suitable secondary raw materials can successfully substitute binder to the extent of 40%; in case of fly ash, the compressive strength after 28 days was higher by 10% and in case of ground glass by 12%. At the same time, positive influence of ground glass on density and integrity of the cement stone was proved. Based on the findings it can be stated that suitable secondary raw materials are capable of enhancing properties of the developed high strength coat. The main result is enhancement of basic physico-mechanical properties and at the same time achieving better structure of the coat, which is the elementary condition for high chemical resistance of cement based composite material.

Název v anglickém jazyce

Structure of Polymer-Cement Composite optimized with Secondary Raw Materials

Popis výsledku anglicky

This paper focuses on possibilities of use of selected secondary raw materials for modification of developed high strength coating based on polymer-cement. The aim is achieving the same or better physical-mechanical properties of resulting material at maximal level of substitution of cement with secondary raw materials. Because of high contents of amorphous SiO2 two secondary raw materials were selected: high temperature fly ash and recycled soda-lime glass to replace cement by 20 and 40% by weight. These secondary raw materials were pre-treated in ball grinder to specific surface of the substituted Portland cement CEM I 42.5 R, 300 m2*kg-1 and specific surface 400 m2*kg-1 (±50 m2*kg-1). Selected test specimens were subjected to compressive strengthdetermination after 3, 28 and 90 days. Samples of selected mix-designs were subjected to Computed Tomography to determine influence of substitution of cement with individual additions on structure of polymer-cement composite. The main finding is that suitable secondary raw materials can successfully substitute binder to the extent of 40%; in case of fly ash, the compressive strength after 28 days was higher by 10% and in case of ground glass by 12%. At the same time, positive influence of ground glass on density and integrity of the cement stone was proved. Based on the findings it can be stated that suitable secondary raw materials are capable of enhancing properties of the developed high strength coat. The main result is enhancement of basic physico-mechanical properties and at the same time achieving better structure of the coat, which is the elementary condition for high chemical resistance of cement based composite material.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Materials Structures Technology

ISSN

2570-6616

e-ISSN

—

Svazek periodika

1

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

26-31

Kód UT WoS článku

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EID výsledku v databázi Scopus

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