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Water desorption characteristic of red gypsum

Lee, Cheng Yee (2015) Water desorption characteristic of red gypsum. Faculty of Civil Engineering & Earth Resources, Universiti Malaysia Pahang.

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Abstract

Red gypsum (RG) is a waste that generated during the process of titanium dioxide production from ilmenite. It is a soil with reddish colour due to the present of iron. This reddish waste being highly produced every year in Malaysia, which is 341000 tonnes and they are mostly disposed to landfill. In this study, the water desorption characteristic of Red Gypsum are tested as well as physical and chemical properties. The physical and chemical properties of Red Gypsum were determined. Other than that, a suction-water content soil-water characteristic curve (SWCC) is formed. The techniques used with the aim of obtaining the data for drying SWCC are vapour equilibrium and osmotic technique. In osmotic technique, the suction ranged from 0.23 to 3.28 MPa, while in vapour equilibrium technique, suctions used were between 3.6 to 111.77 MPa. . The result of SWCC able to give an important information about Red Gypsum. As a result, Red Gypsum has a soil suction around 22.5 MPa and gravimetric water content around 50 % at air entry value (AEV), while at residual condition, the gravimetric water content is 26% and soil suction is around 38 MPa. In conclusion, RG has the drying suction-water content soil-water characteristic curve which almost the same as yellow bentonite. So, it can have the applications as yellow bentonite.

Item Type: Undergraduates Project Papers
Additional Information: Undergraduates Project Papers (Bachelor of Engineering (Hons.) Civil Engineering) -- Universiti Malaysia Pahang – 2015
Uncontrolled Keywords: Water desorption characteristic;
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Civil Engineering & Earth Resources
Depositing User: Ms. 'Arifah Nadiah Che Zainol Ariff
Date Deposited: 17 Mar 2016 02:07
Last Modified: 17 Mar 2016 02:07
URI: http://umpir.ump.edu.my/id/eprint/12141
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