Effect of Saline Soils on Durability of Road between Alsamawa and Sawa Lake

Abstract:

Road specialists in the world often suffer the huge challenge in designing a stable road on very soft saline soils, these soils in arid zones have a low bearing capacity with high compressibility and very sensitive to moisture and synchronized with complete collapse. The case study concerned by the deterioration of main road linking between ‎Alsamawa town and Sawa lake approximately 20 km away from Alsamawa town. There are sections of roads affected by converges of nearby local artificial ‎lakes , water drawn from several good drain down to (80) meters depths and causing the deterioration in the road sections , swell-collapse test results represented by a little swell potential values were appeared for zero applied stress, while aggressive collapse were happened with increasing in applied stress, and the increasing in degree of collapsibility corresponding to increasing of applied stress of (50,100,200) KPa, and sodium chloride (NaCl%) in soil layers range between (0.613-16.468) % and slightly to moderately gypseous soils, the case study included several recommendations to treating the deteriorated significantly of road to protect the sub-grade and subbase layer .

• Periodical: Key Engineering Materials (Volume 857)
• Pages: 349-357
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.857.349
• Online since: August 2020
• Authors: Taha Yaseen Abdulnabi*, Nidhal Hadi Salman, Ban Kasim
• Keywords: Aggressive Collapse, Saline Soil, Sodium Chloride (NaCl%)

References

[1] K. Ravi, S.K. Dash, S. Vogt, and G. Braeu, Behavior of geosynthetic reinforced unpaved roads under cyclic loading, Indian Geotech J, 44(1), 2014, p.77–85.

DOI: 10.1007/s40098-013-0051-9

[2] S. Benmebarek, F. Berrabah, N. Benmebarek, and L. Belounar, Effect of geosynthetic on the performance of road embankment over sabkha soils in Algeria: case study, International Journal of Geosynthetics and Ground Engineering, 1(4), 2015, p.35.

DOI: 10.1007/s40891-015-0040-4

[3] S.N. Abduljauwad, F. Bayomi, A.K. Al-Sheikh, O.S.B. Al-Amoudi, Influence of geotextiles on performance of saline sabkha soils, J Geotech Engineering ASCE , 120(11), 1994, pp.1939-1959.

DOI: 10.1061/(asce)0733-9410(1994)120:11(1939)

[4] R. de Carteret, A review of the effects of salinity on road‏ pavements and bituminous surfacing" Proceedings of the ARRB Conference,‏ Melbourne, Australia, (2010).

[5] A.J.W. Biggs and K.M. Mahony, Is Soil Science Relevant to Road Infrastructure" 13th International Soil Conservation Organization Conference – Brisbane, (2004).

[6] C. Brouwer, International institute for land reclamation and improvement-FAO "The international support program for irrigation water management, Chapter 7, Salty Soils, (2018).

[7] S. Beavis and D. Ellis, An Investigation of the Salt Content of Road Samples from‏ Forbes", NSW. Canberra, ACT, Australian National University, (2007).

[8] Q. Abduboqiy and H. Rashidbek, Substantiation of Design Characteristics of Saline Soils of the Subgrade Embankments, Trends in Civil Engineering and its Architecture (TCEIA), (2019).

DOI: 10.32474/tceia.2019.03.000169

[9] G.M. Latha, A.M. Nair and M.S. Hemalatha, Performance of geosynthetics in unpaved roads, International Journal of Geotechnical Engineering, 4(3), 2010, pp.337-349.

DOI: 10.3328/ijge.2010.04.03.337-349

[10] Soil investigation report No. 1/1/30 -2019 NCCL, Baghdad.

[11] BS 1377:1990 part 3 for chemical tests, (Sulphate content, gypsum content, Chlorides.

[12] ASTM D2216,2010, for natural water content and density.

[13] ASTM D 422, 2014, for sieve analysis and hydrometer.

[14] BS 1377:1990 Part 2, for specific gravity test.

[15] ASTM D - 4546, 2015, for swell and collapse test.