Mechanical properties of lightweight expanded clay aggregate (LECA) concrete

• Autorzy: Issa Atheer S. , Al-Asadi Ali K.

Identyfikatory

DOI

10.22630/srees.3150

• Języki publikacji: EN

Abstrakty

EN

The construction activities are based on structural concrete, which is one of the most commonly used materials. The fundamental aim of using lightweight concrete (LWC) was to reduce the concrete self-weight of the structure parts. As a result, LWC has been used successfully in a variety of installations for several years. In this paper, the mechanical properties of concrete made with lightweight expanded clay aggregate (LECA) as a full replacement for coarse aggregate are studied. The experimental program shows that LECA with a 32 MPa cube compressive strength and an 1,823 kg×m–3 dry density can be used to make structural light-weight aggregate concrete (SLWC). The results show that the reduction in the strength of lightweight aggregate concrete (LWAC) was found to be higher in the concrete with an estimated compressive strength of 32 MPa due to the lower strength of the LWA (expanded clay). According to the test results, the mechanical properties of LWC were greatly improved by adding silica fume (SF). Furthermore, LECA concrete has a splitting tensile strength that is 47% higher than the ASTM C330/C330M-17A minimum requirement. The LECA concrete has a splitting tensile strength to compressive strength ratio of approximately 13%. Additionally, the results demonstrate a 27% difference in the modulus of elasticity between the calculated and tested values.

Słowa kluczowe

EN

lightweight concrete; mechanical properties; lightweight expanded clay aggregate; LECA concrete

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Przegląd Naukowy Inżynieria i Kształtowanie Środowiska
• Rocznik: 2022
• Tom: Vol. 31, No. 3
• Strony: 161--175
• Opis fizyczny: Bibliogr. 23 poz., tab., wykr., zdj.

Twórcy

autor

Issa Atheer S.

• University of Thi-Qar, College of Engineering, Civil Engineering Department, Iraq

• https://orcid.org/0000-0002-8702-2952

autor

Al-Asadi Ali K.

• University of Thi-Qar, College of Engineering, Civil Engineering Department, Iraq

Bibliografia

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• ASTM International [ASTM] (2005). Standard specification for silica fume used in cementitious mixtures (ASTM C1240-05). West Conshohocken, PA: ASTM International.
• ASTM International [ASTM] (2010). Standard test method for static modulus of elasticity and Poisson’s ratio of concrete in compression (ASTM C469/C469M-10). West Conshohocken, PA: ASTM International.
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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)