ABSTRACT
The effects of cold water extraction, incorporation of calcium chloride (CaC1,) and aluminium sulphate (Al,(SO,),) on the setting time (LA, maximum hydration temperature (T,,), time ratio (td and surface chemistry of Eremospatha macrocarpa and Laccosperma secundiflorum particles mixed with Portland cement was investigated. The mixtures were placed in thermally sealed thermos flasks for 24 h after which L,, T,, and t, were measured. The &, T,,andt,were 12.4 and 11.9 h, 59.1 and 583"C, 1.1 and 1.1, respectively for untreated E. macrocarpa and L secundiflorum and ranged from 5.2 to 10.7 h, 57.7 to 837°C and 0.5 to 0.9, respectively when treated with cold water and chemical additives. Cold water extraction and chemical additives significantlv - improved the hydration parameters of rattan-cement system. CaC1, performed better as a chemical accelerator than Al,(SO,), while L. secundiflorum inhibited cement setting more than E. macrocarpa. Infrared spectroscopy showed that incorporation of CaC1, to L. secundiflorum particles helped expose cellulose to advance participation thereby enlarging its surface area for interpenetration networking with cement.
Adefisan, O & Fabiyi, J (2021). Hydration Behaviour and Infrared Spectroscopy of Pre-treatments Effect on Portland Cement-Eremospatha macrocarpa and Laccosperma secund~jZorum Systems. Afribary. Retrieved from https://afribary.com/works/hydration-behaviour-and-infrared-spectroscopy-of-pre-treatments-effect-on-portland-cement-eremospatha-macrocarpa-and-laccosperma-secund-jzorum-systems
Adefisan, O and J Fabiyi "Hydration Behaviour and Infrared Spectroscopy of Pre-treatments Effect on Portland Cement-Eremospatha macrocarpa and Laccosperma secund~jZorum Systems" Afribary. Afribary, 17 Mar. 2021, https://afribary.com/works/hydration-behaviour-and-infrared-spectroscopy-of-pre-treatments-effect-on-portland-cement-eremospatha-macrocarpa-and-laccosperma-secund-jzorum-systems. Accessed 23 Apr. 2024.
Adefisan, O, J Fabiyi . "Hydration Behaviour and Infrared Spectroscopy of Pre-treatments Effect on Portland Cement-Eremospatha macrocarpa and Laccosperma secund~jZorum Systems". Afribary, Afribary, 17 Mar. 2021. Web. 23 Apr. 2024. < https://afribary.com/works/hydration-behaviour-and-infrared-spectroscopy-of-pre-treatments-effect-on-portland-cement-eremospatha-macrocarpa-and-laccosperma-secund-jzorum-systems >.
Adefisan, O and Fabiyi, J . "Hydration Behaviour and Infrared Spectroscopy of Pre-treatments Effect on Portland Cement-Eremospatha macrocarpa and Laccosperma secund~jZorum Systems" Afribary (2021). Accessed April 23, 2024. https://afribary.com/works/hydration-behaviour-and-infrared-spectroscopy-of-pre-treatments-effect-on-portland-cement-eremospatha-macrocarpa-and-laccosperma-secund-jzorum-systems