A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse Velocity
This study investigated the hardening process of alkali-activated material (AAM) mortar using calcium sulfoalumiante (CSA) expansive additive (CSA EA), which accelerates the initial reactivity of AAMs, and subsequent changes in ultrasonic pulse velocity (UPV). After the AAM mortar was mixed with thr...
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MDPI AG
2020-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/19/4432 |
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| author | Gum-Sung Ryu Sung Choi Kyung-Taek Koh Gi-Hong Ahn Hyeong-Yeol Kim Young-Jun You |
| author_facet | Gum-Sung Ryu Sung Choi Kyung-Taek Koh Gi-Hong Ahn Hyeong-Yeol Kim Young-Jun You |
| author_sort | Gum-Sung Ryu |
| collection | DOAJ |
| description | This study investigated the hardening process of alkali-activated material (AAM) mortar using calcium sulfoalumiante (CSA) expansive additive (CSA EA), which accelerates the initial reactivity of AAMs, and subsequent changes in ultrasonic pulse velocity (UPV). After the AAM mortar was mixed with three different contents of CSA EA, the setting and modulus of elasticity of the mortar at one day of age, which represent curing steps, were measured. In addition, UPV was used to analyze each curing step. The initial and final setting times of the AAM mortar could be predicted by analyzing the UPV results measured for 14 h. In addition, the dynamic modulus of elasticity calculated using the UPV results for 24 h showed a tendency similar to that of the static modulus of elasticity. The test results showed that the use of CSA EA accelerated the setting of the AAM mortar and increased the modulus of elasticity, and these results could be inferred using UPV. The proposed measurement method can be effective in evaluating the properties of a material that accelerates the initial reactivity. |
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| format | Article |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T15:50:09Z |
| publishDate | 2020-10-01 |
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| series | Materials |
| spelling | doaj.art-cd6a19493aa341059b14cef28d07619b2023-11-20T16:08:33ZengMDPI AGMaterials1996-19442020-10-011319443210.3390/ma13194432A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse VelocityGum-Sung Ryu0Sung Choi1Kyung-Taek Koh2Gi-Hong Ahn3Hyeong-Yeol Kim4Young-Jun You5Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang-Si 10223, KoreaDepartment of Civil Engineering, KyungDong University 27, Gyeongdongdaehak-Ro, Yangju-Si 11458, KoreaDepartment of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang-Si 10223, KoreaDepartment of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang-Si 10223, KoreaDepartment of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang-Si 10223, KoreaDepartment of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Goyang-Si 10223, KoreaThis study investigated the hardening process of alkali-activated material (AAM) mortar using calcium sulfoalumiante (CSA) expansive additive (CSA EA), which accelerates the initial reactivity of AAMs, and subsequent changes in ultrasonic pulse velocity (UPV). After the AAM mortar was mixed with three different contents of CSA EA, the setting and modulus of elasticity of the mortar at one day of age, which represent curing steps, were measured. In addition, UPV was used to analyze each curing step. The initial and final setting times of the AAM mortar could be predicted by analyzing the UPV results measured for 14 h. In addition, the dynamic modulus of elasticity calculated using the UPV results for 24 h showed a tendency similar to that of the static modulus of elasticity. The test results showed that the use of CSA EA accelerated the setting of the AAM mortar and increased the modulus of elasticity, and these results could be inferred using UPV. The proposed measurement method can be effective in evaluating the properties of a material that accelerates the initial reactivity.https://www.mdpi.com/1996-1944/13/19/4432alkali-activated materialCSA expansive additiveultrasonic pulse velocitysetting timemodulus of elasticity |
| spellingShingle | Gum-Sung Ryu Sung Choi Kyung-Taek Koh Gi-Hong Ahn Hyeong-Yeol Kim Young-Jun You A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse Velocity Materials alkali-activated material CSA expansive additive ultrasonic pulse velocity setting time modulus of elasticity |
| title | A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse Velocity |
| title_full | A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse Velocity |
| title_fullStr | A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse Velocity |
| title_full_unstemmed | A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse Velocity |
| title_short | A Study on Initial Setting and Modulus of Elasticity of AAM Mortar Mixed with CSA Expansive Additive Using Ultrasonic Pulse Velocity |
| title_sort | study on initial setting and modulus of elasticity of aam mortar mixed with csa expansive additive using ultrasonic pulse velocity |
| topic | alkali-activated material CSA expansive additive ultrasonic pulse velocity setting time modulus of elasticity |
| url | https://www.mdpi.com/1996-1944/13/19/4432 |
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