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Evaluation of mortar setting time by using electrical resistivity measurements
https://orcid.org/0000-0002-6253-6877
HighlightsElectrical resistivity of freshly mixed mortar was measured to monitor its setting process.Increasing electrical resistivity with hydration is affected by mix proportion and chemical admixtures.Measured electrical parameters were correlated with the setting time.The setting time of mortar can be estimated using the estimating equations.
AbstractCement hydration induces microstructural evolution in cement-based materials, causing setting and hardening. Various experimental techniques were proposed to evaluate the time of setting, which includes the Vicat needle test and ultrasound inspections. This study aims to measure electrical resistivity in order to monitor microstructural evolution. For this purpose, an optimized experimental setup is proposed by performing a series of pre-test analyses. A total of 51 mortar mixes are prepared to study the effects of various mix-proportions and the use of various chemical admixtures. As a result, two parameters that represent a change in electrical resistivity are identified: the rising time, which indicates the onset of an increase in electrical resistivity, and the increasing ratio over time. Both parameters are discussed with conventional test results obtained from the penetration resistance method. Their correlation allows us to estimate the setting time of mortar.
Evaluation of mortar setting time by using electrical resistivity measurements
https://orcid.org/0000-0002-6253-6877
HighlightsElectrical resistivity of freshly mixed mortar was measured to monitor its setting process.Increasing electrical resistivity with hydration is affected by mix proportion and chemical admixtures.Measured electrical parameters were correlated with the setting time.The setting time of mortar can be estimated using the estimating equations.
AbstractCement hydration induces microstructural evolution in cement-based materials, causing setting and hardening. Various experimental techniques were proposed to evaluate the time of setting, which includes the Vicat needle test and ultrasound inspections. This study aims to measure electrical resistivity in order to monitor microstructural evolution. For this purpose, an optimized experimental setup is proposed by performing a series of pre-test analyses. A total of 51 mortar mixes are prepared to study the effects of various mix-proportions and the use of various chemical admixtures. As a result, two parameters that represent a change in electrical resistivity are identified: the rising time, which indicates the onset of an increase in electrical resistivity, and the increasing ratio over time. Both parameters are discussed with conventional test results obtained from the penetration resistance method. Their correlation allows us to estimate the setting time of mortar.
Evaluation of mortar setting time by using electrical resistivity measurements
https://orcid.org/0000-0002-6253-6877
HighlightsElectrical resistivity of freshly mixed mortar was measured to monitor its setting process.Increasing electrical resistivity with hydration is affected by mix proportion and chemical admixtures.Measured electrical parameters were correlated with the setting time.The setting time of mortar can be estimated using the estimating equations.
AbstractCement hydration induces microstructural evolution in cement-based materials, causing setting and hardening. Various experimental techniques were proposed to evaluate the time of setting, which includes the Vicat needle test and ultrasound inspections. This study aims to measure electrical resistivity in order to monitor microstructural evolution. For this purpose, an optimized experimental setup is proposed by performing a series of pre-test analyses. A total of 51 mortar mixes are prepared to study the effects of various mix-proportions and the use of various chemical admixtures. As a result, two parameters that represent a change in electrical resistivity are identified: the rising time, which indicates the onset of an increase in electrical resistivity, and the increasing ratio over time. Both parameters are discussed with conventional test results obtained from the penetration resistance method. Their correlation allows us to estimate the setting time of mortar.
Evaluation of mortar setting time by using electrical resistivity measurements
Yim, Hong Jae (author) / Lee, Hanju (author) / Kim, Jae Hong (author)
Construction and Building Materials ; 146 ; 679-686
2017-04-11
8 pages
Article (Journal)
Electronic Resource
English
Evaluation of mortar setting time by using electrical resistivity measurements
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Evaluation of mortar setting time by using electrical resistivity measurements
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Evaluation of mortar setting time by using electrical resistivity measurements
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