Investigation of gypsum composites with different lightweight fillers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00350452" target="_blank" >RIV/68407700:21110/21:00350452 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.conbuildmat.2021.123791" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2021.123791</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2021.123791" target="_blank" >10.1016/j.conbuildmat.2021.123791</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of gypsum composites with different lightweight fillers

Popis výsledku v původním jazyce

Structure and behaviour of gypsum composites, prepared from flue gas desulfurization binder and three types of fine fillers (silica sand, perlite, expanded clay aggregate and waste polyurethane foam) were studied. Their structure and composition were investigated by SEM, XRD and porosimetry, mechanical, thermal and moisture properties were tested. It was found that the type and surface quality of the aggregates affect the shape and size of gypsum crystals significantly. Largest gypsum crystals are formed in the mortars with non-porous particles. With increasing surface roughness of particles the strength of the mortars increases. Mortar with expanded clay filler has the highest strength, its compressive strength was comparable with the compressive strength of the reference material with silica sand, but its bulk density was more than 40% lower and its thermal conductivity decreased to 20% of the thermal conductivity of reference material. The mortar with waste polyurethane foam has the lowest strength (2.9 MPa at 7 days) but best thermal conductivity (0.211 W/m.K) of all materials. Technical properties of composite with waste polyurethane are still sufficient for building purposes and its environmental impact is lowest of all materials

Název v anglickém jazyce

Investigation of gypsum composites with different lightweight fillers

Popis výsledku anglicky

Structure and behaviour of gypsum composites, prepared from flue gas desulfurization binder and three types of fine fillers (silica sand, perlite, expanded clay aggregate and waste polyurethane foam) were studied. Their structure and composition were investigated by SEM, XRD and porosimetry, mechanical, thermal and moisture properties were tested. It was found that the type and surface quality of the aggregates affect the shape and size of gypsum crystals significantly. Largest gypsum crystals are formed in the mortars with non-porous particles. With increasing surface roughness of particles the strength of the mortars increases. Mortar with expanded clay filler has the highest strength, its compressive strength was comparable with the compressive strength of the reference material with silica sand, but its bulk density was more than 40% lower and its thermal conductivity decreased to 20% of the thermal conductivity of reference material. The mortar with waste polyurethane foam has the lowest strength (2.9 MPa at 7 days) but best thermal conductivity (0.211 W/m.K) of all materials. Technical properties of composite with waste polyurethane are still sufficient for building purposes and its environmental impact is lowest of all materials

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GA19-08605S" target="_blank" >GA19-08605S: Vliv plniv na strukturu a vlastnosti síranovápenatých kompozitů</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Construction and Building Materials

ISSN

0950-0618

e-ISSN

1879-0526

Svazek periodika

297

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000692631700002

EID výsledku v databázi Scopus

2-s2.0-85108084596