Multi-scale creep analysis of SCM-modified concrete: indentation test and multiscale homogenization method

• Autorzy: He Zhi-hai , Jin Dian , Shi Jin-yan , Han Xu-dong , Jamal Ahmed Salah

Identyfikatory

DOI

10.1007/s43452-024-00915-8

• Języki publikacji: EN

Abstrakty

EN

Traditional concrete creep testing and prediction methods are cumbersome and time-consuming. In this study, the creep behavior of concrete modified with various supplementary cementitious materials (sludge and fly ash, 10-30 wt.%) was investigated and analyzed using the indentation tests and multiscale homogenization analysis. The study revealed that incorporating 10% water treatment sludge ash (WTSA) effectively enhanced concrete’s axial compressive strength and elastic modulus, while reducing its creep strain. This was mainly because adding 10% WTSA improved the compactness of concrete and increased the ratio of high density (HD) C-S-H in C-S-H gel and reduced the width of interfacial transition zone (ITZ). However, a higher content of WTSA admixture was observed to negatively impact the concrete properties. Furthermore, the creep behavior of concrete was predicted through multiscale homogenization calculations. Utilizing the nanoindentation technique, accurate predictions in the multiscale creep model can be obtained by differentiating and quantifying the volume fraction of the physical phase based on the characteristic indentation modulus. In contrast, the quantitative results of the physical phase obtained from the inverse convolution need to be corrected by thermogravimetric analysis and backscattered electrons to obtain a higher level of accuracy in creep prediction.

Słowa kluczowe

EN

modified concrete; water treatment sludge; creep testing; multiscale homogenization

PL

beton modyfikowany; osad z uzdatniania wody; badanie pełzania; homogenizacja wieloskalowa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2024
• Tom: Vol. 24, no. 2
• Strony: art. no. e116, 2024
• Opis fizyczny: Bibliogr. 37 poz., rys., tab., wykr.

Twórcy

autor

He Zhi-hai

• College of Civil Engineering, Shaoxing University, Shaoxing 312000, China
• Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province, Shaoxing 312000, China

autor

Jin Dian

• College of Civil Engineering, Shaoxing University, Shaoxing 312000, China

autor

Shi Jin-yan

• School of Civil Engineering, Central South University, Changsha 410075, China

• https://orcid.org/0000-0002-6641-2097

autor

Han Xu-dong

• College of Civil Engineering, Shaoxing University, Shaoxing 312000, China

autor

Jamal Ahmed Salah

• Department of Civil Engineering, Faculty of Engineering, Tishk International University, Erbil 44001, Iraq

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).