Study on the pore and microstructure fractal characteristics of alkali-activated coal gangue-slag mortars

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dc.contributor.authorMa H
dc.contributor.authorSun J
dc.contributor.authorWu C
dc.contributor.authorYi C
dc.contributor.authorLi, Yu
dc.date.accessioned2024-07-04T01:03:13Z
dc.date.available2024-07-04T01:03:13Z
dc.date.issued2020
dc.description.abstractJust as it is regarding ordinary cement-based materials, the pore structure and microstructure of alkali-activated materials are disordered. It is essential to predict the macroscopic properties by studying the pore and microstructure fractal characteristics of materials. In this paper, the effects of slag content and alkali activator modulus on compressive strength, porosity, and microstructure of alkali-activated coal gangue-slag (AACGS) mortar were studied. Further, with the help of mercury intrusion porosimetry (MIP) data and the MATLAB programming, the pore and SEM photos fractal dimensions of AACGS mortar specimens were obtained, respectively, and the relationship between the microscopic fractal dimensions and the macroscopic strength and the structural characteristics of pores was established. The results show that the pore fractal dimension has a good linear relationship with the compressive strength and pore characteristic parameters (porosity, total pore area, and average pore diameter, etc.). With the increase of slag content, the SEM photos fractal dimension of AACGS mortar specimens increases, and the fractal dimension and compressive strength also show a significant positive linear relationship. The two fractal characterization methods can be used in the alkali-activated material system and have important guiding significance for predicting the macroscopic strength and pore characteristic parameters of the material.
dc.identifier.citationMa H, Sun J, Wu C, Yi C, Li Y (2020). Study on the pore and microstructure fractal characteristics of alkali-activated coal gangue-slag mortars. Materials. 13(11). E2442-.
dc.identifier.doihttp://doi.org/10.3390/ma13112442
dc.identifier.issn1996-1944
dc.identifier.urihttps://hdl.handle.net/10092/106937
dc.languageeng
dc.publisherMDPI AG
dc.rightsAll rights reserved unless otherwise stated
dc.rights.urihttp://hdl.handle.net/10092/17651
dc.subjectalkali-activated coal gangue-slag
dc.subjectcompressive strength
dc.subjectfractal dimension
dc.subjectmicrostructure
dc.subjectpore characteristic parameters
dc.subject.anzsrc34 - Chemical sciences::3403 - Macromolecular and materials chemistry::340307 - Structure and dynamics of materials
dc.subject.anzsrc34 - Chemical sciences::3403 - Macromolecular and materials chemistry::340305 - Physical properties of materials
dc.subject.anzsrc40 - Engineering::4016 - Materials engineering::401602 - Composite and hybrid materials
dc.subject.anzsrc40 - Engineering::4019 - Resources engineering and extractive metallurgy::401904 - Mineral processing/beneficiation
dc.titleStudy on the pore and microstructure fractal characteristics of alkali-activated coal gangue-slag mortars
dc.typeJournal Article
uc.collegeFaculty of Engineering
uc.departmentCivil and Natural Resources Engineering
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