Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis of foamed concrete pore structure of railway roadbed based on X-ray computed tomography
Highlights The performance of three kinds of foamed concrete for railway subgrade was tested. Pore size distribution in materials was characterized quantitatively by X-CT. The pore morphology characteristics of different sphericity were analyzed. The influence of pore parameters on the performance of foamed concrete was analyzed.
Abstract The uneven settlement of weak roadbed will lead to road subsidence, which will reduce driving comfort and even cause traffic accidents. In the treatment of weak road base, foamed concrete has become an excellent subgrade replacement material because of its light weight and high strength. In order to study the pore structure characteristics of foamed concrete used in the railway roadbed replacement project, three kinds of foamed concrete with different density made in construction site were analyzed based on X-ray computed tomography (X-CT) technology. The results showed that the porosity of the three kinds of foamed concrete was different, the pore size distribution was also different, and the sphericity of pores was closely related to the pore size. Finally, the basic mechanical properties of foamed concrete were analyzed from the point of view of pore parameters.
Analysis of foamed concrete pore structure of railway roadbed based on X-ray computed tomography
Highlights The performance of three kinds of foamed concrete for railway subgrade was tested. Pore size distribution in materials was characterized quantitatively by X-CT. The pore morphology characteristics of different sphericity were analyzed. The influence of pore parameters on the performance of foamed concrete was analyzed.
Abstract The uneven settlement of weak roadbed will lead to road subsidence, which will reduce driving comfort and even cause traffic accidents. In the treatment of weak road base, foamed concrete has become an excellent subgrade replacement material because of its light weight and high strength. In order to study the pore structure characteristics of foamed concrete used in the railway roadbed replacement project, three kinds of foamed concrete with different density made in construction site were analyzed based on X-ray computed tomography (X-CT) technology. The results showed that the porosity of the three kinds of foamed concrete was different, the pore size distribution was also different, and the sphericity of pores was closely related to the pore size. Finally, the basic mechanical properties of foamed concrete were analyzed from the point of view of pore parameters.
Analysis of foamed concrete pore structure of railway roadbed based on X-ray computed tomography
Guo, Yuzhu (Autor:in) / Chen, Xudong (Autor:in) / Chen, Bo (Autor:in) / Wen, Rongkun (Autor:in) / Wu, Peng (Autor:in)
18.11.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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