Evaluation of engineering properties of ultra-lightweight foamed concrete produced using the pre-foamed method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F20%3A10245707" target="_blank" >RIV/61989100:27120/20:10245707 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.researchgate.net/publication/341964947_Evaluation_of_Engineering_Properties_of_Ultra-lightweight_Foamed_Concrete_Produced_using_the_Pre-foamed_Method/link/5edb261192851c9c5e86aa28/download" target="_blank" >https://www.researchgate.net/publication/341964947_Evaluation_of_Engineering_Properties_of_Ultra-lightweight_Foamed_Concrete_Produced_using_the_Pre-foamed_Method/link/5edb261192851c9c5e86aa28/download</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of engineering properties of ultra-lightweight foamed concrete produced using the pre-foamed method

Popis výsledku v původním jazyce

The major aim of this experimental study is to evaluate the engineering properties of ultra-lightweight foamed concrete produced using the pre-foamed method. Four ultra-lightweight foamed concrete mixtures were designed with the target dry densities of 500, 600, 700, and 800 kg/m3 corresponding to the foam contents of 7.1, 5.3, 4.2 and 2.7%. It is noted that the foam was prepared prior to be used by a foam generator using the foaming agent/water ratio of 1/40. Local materials sourced from Southern Vietnam, including PC40 Portland cement, fly ash, slag, stone powder, superplasticizer, and water were used for this study. All of the ultra-lightweight foamed concrete samples were prepared in the laboratory for the tests of compressive strength, water absorption, dry density, drying shrinkage, and thermal conductivity. Moreover, the microstructure of the ultra-lightweight foamed concrete samples was also observed using a scanning electron microscope. Cost analysis was also performed to further evaluate the potential application of the ultra-lightweight foamed concrete in real practice. Test results show that foam content affected the engineering properties of the ultra-lightweight foamed concrete samples significantly. The increase in foam content resulted in increasing water absorption and drying shrinkage while decreasing compressive strength, dry density, thermal conductivity, and cost. A poorer microstructure was also observed at the ultra-lightweight foamed concrete samples containing more foam. The ultra-lightweight foamed concrete samples with dry densities ranging from 500 - 800 kg/m3 obtained the compressive strength, water absorption, thermal conductivity, and cost in the ranges of 0.78 - 6.88 MPa, 30.7 - 85.8%, 0.103 MINUS SIGN 0.231 Wm/K, and 407000 - 693000 VND/m3, respectively. Thus, properties of the ultra-lightweight foamed concrete samples conformed well to the official Vietnamese standard requirements, except for the D500 sample. (C) 2020, Research Trend. All rights reserved.

Název v anglickém jazyce

Evaluation of engineering properties of ultra-lightweight foamed concrete produced using the pre-foamed method

Popis výsledku anglicky

The major aim of this experimental study is to evaluate the engineering properties of ultra-lightweight foamed concrete produced using the pre-foamed method. Four ultra-lightweight foamed concrete mixtures were designed with the target dry densities of 500, 600, 700, and 800 kg/m3 corresponding to the foam contents of 7.1, 5.3, 4.2 and 2.7%. It is noted that the foam was prepared prior to be used by a foam generator using the foaming agent/water ratio of 1/40. Local materials sourced from Southern Vietnam, including PC40 Portland cement, fly ash, slag, stone powder, superplasticizer, and water were used for this study. All of the ultra-lightweight foamed concrete samples were prepared in the laboratory for the tests of compressive strength, water absorption, dry density, drying shrinkage, and thermal conductivity. Moreover, the microstructure of the ultra-lightweight foamed concrete samples was also observed using a scanning electron microscope. Cost analysis was also performed to further evaluate the potential application of the ultra-lightweight foamed concrete in real practice. Test results show that foam content affected the engineering properties of the ultra-lightweight foamed concrete samples significantly. The increase in foam content resulted in increasing water absorption and drying shrinkage while decreasing compressive strength, dry density, thermal conductivity, and cost. A poorer microstructure was also observed at the ultra-lightweight foamed concrete samples containing more foam. The ultra-lightweight foamed concrete samples with dry densities ranging from 500 - 800 kg/m3 obtained the compressive strength, water absorption, thermal conductivity, and cost in the ranges of 0.78 - 6.88 MPa, 30.7 - 85.8%, 0.103 MINUS SIGN 0.231 Wm/K, and 407000 - 693000 VND/m3, respectively. Thus, properties of the ultra-lightweight foamed concrete samples conformed well to the official Vietnamese standard requirements, except for the D500 sample. (C) 2020, Research Trend. All rights reserved.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

International Journal on Emerging Technologies

ISSN

0975-8364

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

IN - Indická republika

Počet stran výsledku

6

Strana od-do

53-58

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85085559456