A Study on Gel/Space Ratio Development in Binary Mixture Containing Portland Cement and Meta-Illite Calcined Clay/Rice Husk Ash.
| Autor: | Nduka DO; Department of Building Technology, College of Science and Technology, Covenant University, Ota 112233, Nigeria., Olawuyi BJ; Department of Building, School of Environmental Technology, Federal University of Technology, Minna 920211, Nigeria., Joshua OO; Department of Building Technology, College of Science and Technology, Covenant University, Ota 112233, Nigeria., Omuh IO; Department of Building Technology, College of Science and Technology, Covenant University, Ota 112233, Nigeria. |
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| Jazyk: | angličtina |
| Zdroj: | Gels (Basel, Switzerland) [Gels] 2022 Jan 28; Vol. 8 (2). Date of Electronic Publication: 2022 Jan 28. |
| DOI: | 10.3390/gels8020085 |
| Abstrakt: | Supplementary cementitious materials (SCMs) have been widely used to enhance both the microscopic and macroscopic properties of the Portland cement (PC)-SCM composite matrix. Few studies have been undertaken to establish the gel/space ratio of meta-illite calcined clay (MCC) and rice husk ash (RHA)-based high-performance concrete (HPC) mortar. This experimental paper describes a conventional degree of hydration (non-evaporable water) and porosity routes of establishing a link amid the gel/space ratio and compressive strength of a sieved mortar from Class 1 (50-75 MPa) HPC at an early age. Using the non-evaporable water method, this paper predicted the gel/space ratio of the hardened MCC/RHA-based HPC mortars and curved fitted into Powers' exponent equation. The results from this study revealed that MCC or RHA additions (5-30% by weight of PC) to the PC-SCM matrix led to a moderate decline in the compressive strength of the low water-binder ratio (W/B) HPC mortar. The modification aimed at void volume (superabsorbent polymers, SAP, and air) applying Bolomey's formula and Powers' gel/space ratio developed a suitable fitting into the Powers' model. This experimental procedure shows feasibility to predict the MCC and RHA outcome on the compressive strength of HPC. |
| Databáze: | MEDLINE |
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