vol28no2pa7

TJES: Muhauwiss F , Hassoun S , .WETTING AND DRYING CYCLES EFFECT ON DURABILITY OF GYPSUM SOILS TREATED WITH CALCIUM CHLORIDE OR CEMENT ADDITIVES. Tikrit Journal of Engineering Sciences 2021; 28(2): 80- 92.

APA: Muhauwiss F , Hassoun S , . (2021). WETTING AND DRYING CYCLES EFFECT ON DURABILITY OF GYPSUM SOILS TREATED WITH CALCIUM CHLORIDE OR CEMENT ADDITIVES. Tikrit Journal of Engineering Sciences, 28 (2), 80- 92.

References

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(5) Lucian, C.(2006)\\\”Geotechnical Aspects of Bulding on Expansive Soils in Khibaha, Tanzania\\\”, KTH Architecture and the Built Environment Vol.12 pp.1-150. (6) AL-Kiki, I.M. and AL-Atalla, M.A. and ALZubaydi, A.H., (2011) ((Long Trem Strength and Durability of Clayey Soil Stabilized with Lime)) Eng. and Tech. Journal , Vol.29, No.4, ,Pages 725-735 . (7) AL_Helou, Karim Hadi Ibrahim 2008 ((Improving the compressibility of gypsum soil)) University of Technology, Baghdad, Iraq Civil Engineering Journal, Issue 12 Pages 1-8 (8) AL- Neami, M.A. , (2010) \\\”Improvement of Gypseous Soil by Clinker Additive\\\” ,Engineering and Technology Journal , Vol.28, No.19, pp.5822-5832 (9) Al-Obaidi, M.A. And AL-Kiki , I,M. and ALZubaydi A.H., (2010) ((Strength and Durability of Gypseous Soil Treated with Waste Lime and Cement )) University Of Mosul -Collage of Eng. (10) Snodi, L.N. and Hussein, I.S. (2019) \\\”Tire Rubber Waste for Improving Gypseous Soil\\\”, IOP Science journal Vol.584 , pp.1-7

 

Tikrit Journal of Engineering Sciences (2021) 28(2) 80- 92.

WETTING AND DRYING CYCLES EFFECT ON DURABILITY OF GYPSUM SOILS TREATED WITH CALCIUM CHLORIDE OR CEMENT ADDITIVES

Farouk .. Muhauwiss *1 Sura .. Hassoun 2

0 Department of Civil Engineering /College of Engineering / Tikrit University

* Corresponding author: ‫dr.faroukmajeed@tu.edu.iq‬  

DOI: http://doi.org/10.25130/tjes.28.2.07

Abstract

The study consists of two stages: the first one is to improve the gypsum soil with cement or calcium chloride and the second stage is to expose these soil specimens to series of wetting and drying cycles .Three soil specimens were taken and marked as (A,B and C) with gypsum content (47, 32 and 23)% respectively .The results show that cement additive increases the cohesion of soil specimens to 50% and collapse potential decreases with 65% and soil specimens improved with calcium chloride increase the cohesion up to more than 70% and collapse potential decreased about 70%. In the first cycle for wetting and drying cycles for soil specimens improved with cement the cohesion decreases about 25% and stays with the same ratio of the decreasing along the other cycle up to twelfth cycle. Collapse potential remains with the same value and is not affected by cycling of wetting and drying. In the first cycle for soil specimens treated with calcium chloride there is no effect in the first cycle whereas in the fourth cycle the cohesion increased by 60% and in the eighth cycle the cohesion decreased 8% and remains stable until the twelfth cycle. Collapse potential increases from one cycle to another by (30-50) % for all soil specimens.

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Keywords: Gypseous soil, cement, calcium chloride, durability.

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