Sulphuric Acid Resistance of Cementitious Materials: Multiscale Approach to Assessing the DegradationSource: Journal of Materials in Civil Engineering:;2020:;Volume ( 032 ):;issue: 007DOI: 10.1061/(ASCE)MT.1943-5533.0003261Publisher: ASCE
Abstract: The deterioration of conventional cement (CC) and alkali-activated (AA) cementitious materials when exposed to sulphuric acid is influenced by the scale, both in terms of scale of manufacture (paste, mortar, and concrete) and level of observation (microscopic to macroscopic). The degradation of samples at the microscale was examined using scanning electron microscopy, energy dispersive x-ray, x-ray diffraction, Fourier transform infrared spectroscopy, and microcomputed tomography. Macroscopic measurements were used to establish the cross-section change, mass loss, and compressive strength. In addition, the ion change in the reservoir solution was examined using inductively coupled plasma mass spectroscopy. Microscale and macroscale measurements highlight the fundamental difference in the degradation of CC and AA materials, and therefore current simple indicator tests are inadequate for comparing the performance of materials.
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contributor author | Lei Gu | |
contributor author | Phillip Visintin | |
contributor author | Terry Bennett | |
date accessioned | 2022-01-30T20:01:16Z | |
date available | 2022-01-30T20:01:16Z | |
date issued | 2020 | |
identifier other | %28ASCE%29MT.1943-5533.0003261.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4266380 | |
description abstract | The deterioration of conventional cement (CC) and alkali-activated (AA) cementitious materials when exposed to sulphuric acid is influenced by the scale, both in terms of scale of manufacture (paste, mortar, and concrete) and level of observation (microscopic to macroscopic). The degradation of samples at the microscale was examined using scanning electron microscopy, energy dispersive x-ray, x-ray diffraction, Fourier transform infrared spectroscopy, and microcomputed tomography. Macroscopic measurements were used to establish the cross-section change, mass loss, and compressive strength. In addition, the ion change in the reservoir solution was examined using inductively coupled plasma mass spectroscopy. Microscale and macroscale measurements highlight the fundamental difference in the degradation of CC and AA materials, and therefore current simple indicator tests are inadequate for comparing the performance of materials. | |
publisher | ASCE | |
title | Sulphuric Acid Resistance of Cementitious Materials: Multiscale Approach to Assessing the Degradation | |
type | Journal Paper | |
journal volume | 32 | |
journal issue | 7 | |
journal title | Journal of Materials in Civil Engineering | |
identifier doi | 10.1061/(ASCE)MT.1943-5533.0003261 | |
page | 04020171 | |
tree | Journal of Materials in Civil Engineering:;2020:;Volume ( 032 ):;issue: 007 | |
contenttype | Fulltext |