Influence of initial casting temperature on the properties and microstructure of ultra-light cement-based foam composites for energy-saving buildings

• Autorzy: Zhang Yangkai , Sang Guochen , Zhao Caiyun , Guo Teng , Cui Xiaoling , Guo Zhiqiang , Zou Saisai

Identyfikatory

DOI

0.1007/s43452-023-00727-2

• Języki publikacji: EN

Abstrakty

EN

The application of ultra-light cement-based foam composites (ULCF) in buildings has been verified as an effective way to achieve energy conservation in the building sector. However, the production process of ULCF is difficult to complete at the ideal constant temperature during practical industrial production due to cost control and other factors. The sun exposure and residual heat from the machines will cause the initial casting temperature of ULCF to be raised in the preparation process, which will inevitably have an impact on the macroscopic properties of ULCF. In this study, a series of tests were conducted to explore the effect of initial casting temperature (30–55 °C) on the macroscopic properties and microstructure of ULCF for the first time. The results indicated that the 28-day compressive strength of ULCF exhibited a tendency to first increase and then decrease with the increase of initial casting temperature, which was attributed to the variation of its internal pore structure. The thermal conductivity test shows that the thermal conductivity of ULCF existed a minimum value of 0.0651 Wm−1 K−1 when the initial casting temperature reached 40 °C. Meanwhile, SEM and XRD were employed to examine the microstructure and hydration products of ULCF with different initial casting temperatures. Furthermore, the internal pore structure parameters of ULCF were quantitatively analyzed through Image-Pro Plus software, and the results demonstrated that there is a critical value for the initial casting temperature of ULCF, which allows the internal pore structure of ULCF to have characteristics of small size and approximate spherical shape.

Słowa kluczowe

EN

ultra-light cement-based foam composites; initial casting temperature; compressive strength; thermal conductivity; microstructure; pore structure parameters

PL

temperatura odlewania; wytrzymałość na ściskanie; przewodność cieplna; mikrostruktura

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 3
• Strony: art. no. e190, 2023
• Opis fizyczny: Bibliogr. 36 poz., rys., wykr.

Twórcy

autor

Zhang Yangkai

• School of Civil Engineering and Architecture, Xi’an University of Technology, No. 5, Jinhua Road, Xi’an, Shaanxi 710048, China

autor

Sang Guochen

• School of Civil Engineering and Architecture, Xi’an University of Technology, No. 5, Jinhua Road, Xi’an, Shaanxi 710048, China

autor

Zhao Caiyun

• School of Civil Engineering and Architecture, Xi’an University of Technology, No. 5, Jinhua Road, Xi’an, Shaanxi 710048, China

autor

Guo Teng

• School of Civil Engineering and Architecture, Xi’an University of Technology, No. 5, Jinhua Road, Xi’an, Shaanxi 710048, China

autor

Cui Xiaoling

• School of Civil Engineering and Architecture, Xi’an University of Technology, No. 5, Jinhua Road, Xi’an, Shaanxi 710048, China

autor

Guo Zhiqiang

• School of Civil Engineering and Architecture, Xi’an University of Technology, No. 5, Jinhua Road, Xi’an, Shaanxi 710048, China

autor

Zou Saisai

• School of Civil Engineering and Architecture, Xi’an University of Technology, No. 5, Jinhua Road, Xi’an, Shaanxi 710048, China

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)