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Advances in Concrete Construction Volume 10, Number 4, October 2020 , pages 301-310 DOI: https://doi.org/10.12989/acc.2020.10.4.301 |
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Development of Pozzolanic material from clay |
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Abdulaziz Alaskar, S.N.R. Shah, Manthar Ali Keerio, Javed Ali Phulpoto, Shahrizan Baharom, Hamid Assilzadeh, Rayed Alyousef, Hisham Alabduljabbar and Abdeliazim Mustafa Mohamed
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| Abstract | ||
| The following paper concentrates on the objective of studying the influences of extent of duration and temperature on the Pozzolanic properties as well as reactivity of locally existing natural clay of Nai Gaj, district Dadu, Sindh Pakistan. The activation of the clay only occurs through heating when temperature in a furnace chamber reaches 600, 700 and 800oC for 1, 2 and 3 hours and at 900 and 1000oC for 1 and 2 hours. Furthermore, the strength activity index (SAI) of advanced pozzolanic material happens to be identified through 20% cement replacement for different samples of calcined clay as per ASTM C-618. The compressive strength test of samples had been operated for 7 and 28-days curing afterwards. The maximum compressive strength had been seen in mix E in which cement was replaced with clay calcined at 700oC for 1 hour that is 27.05 MPa that is 24.31% more than that of control mix. The results gathered from the SAI verdicts the optimal activation temperature is 700oC within a one-hour time period. The SAI at a temperature of 700oC with a one-hour duration at 28 days is 124.31% which happens to satisfy the requirements of the new Pozzolanic material, in order to be applied in mortar/concrete (i.e., 75%). The Energy- dispersive spectrometry (EDS) along with the X-ray diffraction (XRD) have been carried out in means of verifying whether there is silica content or amorphous silica present in metakaolin that has been developed. The findings gathered from the SAI were validated, as the analysis of XRD verified that there is in fact Pozzolanic activity of developed metakaolin. Additionally, based on observation, the activated metakaolin holds a significant influence on the increase in mortar's compressive strength. | ||
| Key Words | ||
| natural clay; Pozzolanic; Metakaolin; partial replacement; mortar; concrete | ||
| Address | ||
| Abdulaziz Alaskar: Department of Civil Engineering, College of Engineering, King Saud University, Riyadh 11362, Saudi Arabia S.N.R. Shah: Mehran University of Engineering & Technology, SZAB Campus, Pakistan Manthar Ali Keerio: Quaid e Awam University College of Engineering Science & Technology, Pakistan Javed Ali Phulpoto: Mehran University of Engineering & Technology, SZAB Campus, Pakistan Shahrizan Baharom: Department of Civil Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor, Malaysia Hamid Assilzadeh: Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam Rayed Alyousef: Department of Civil Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Al-kharj 11942, Saudi Arabia Hisham Alabduljabbar: Department of Civil Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Al-kharj 11942, Saudi Arabia Abdeliazim Mustafa Mohamed: Department of Civil Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Al-kharj 11942, Saudi Arabia | ||
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