Analyze the Geotechnical Properties of Aggregate in Al-Mahzam area and Evaluation of its Suitability for Using in road purposes
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Abstract
This research studies the geotechnical properties of the Quaternary deposits aggregate in Al-Mahzam area in Tikrit city/Salahadin governorate. Samples are collected from three sites on the western bank of Tigris River for studying the physical, mineralogical, chemical, strength and durability properties and evaluating its suitability for sub base in road works. The results for the physical tests through the grain size distribution test show that the aggregate is well graded and suitable to use in road works as sub base for class A. Specific gravity and density tests were carried on according to ASTM, D854,C127 Liquid limit value are (5.10, 2.2 and 4) % and the samples are non-plastic while the value of the elongation and flakiness index according to ISS, 45/1989 are (21.65, 16.04 and 15.85)% and (26.11, 28.65 and 36.00)% respectively.
Mineral composition test of gravel particles revealed that carbonate gravel forming the high percentage of the mineral composition, chert and quartz, sandstone, igneous and metamorphic rocks respectively. Strength test for aggregate Impact Value were carried out according to ISS,47/1970 and B.S.812-112,1990 are (7.06,9.79 and 8.8)% which is classified to exceptionally strong which is specified that shall not exceed 30% for using in road works, and compression strength value which is derived from point load test are (197, 189.3 and 182.4) MPa. according to Hawkins classification is very strong. The durability test results represented by the loss angles test are (26.72, 26.18 and 29.55)% which is suitable for sub base road work, and the average of the soundness test results were ranges (0.62-3.54)% for coarse and fine aggregates which is within the specification and suitable to use the aggregate in roadwork as the sub base. For the chemical tests the values of organic matter, pH value, TDS and sulfate salts (gypsum %) are within the specification and suitable for using in sub base course for road
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References
[1] Smith, M. R, Collis. L., 2001. Aggregate sand, gravel and crushed rock aggregate for construction purposes, 3rdrd Edition, geological society Engineering Geology Special Publication no,17, London, 331p.
[2] Hamza, N.M., Lawi, F.A., Yaqoub, S.Y., Mouse, A. and Fouad, S.F., (1989): Regional geological report, S. Co. G.M.I. liberary. Unpublished report, No. 2033 Baghdad 107p
[3] Al-Shammary, T.H. and Yehya, N.A.,(1993): Sedimentological study of conglomerate facies of Bahin Lawa area, NE Mosul, N. Iraq. Iraqi Geol. Jour. 26, 187-198.
[4] Baziany, M.M and Karim, K.H.,(2007): A new concept for the origin of accumulated conglomerate at Auroman, Halabja area, NE Iraq. Iraq Bull. Of Geology and Mining, 3, 43-53
[5] American Society for Testing and Materials D75, 2004
[6] Iraqi standard No. 23,1984.
[7] American Society for Testing and Materials D421,D422.
[8] American Society for Testing and Materials D854 ASTM D 854-00 – Standard Test for Specific Gravity of Soil Solids by Water Pycnometer.
[9] American Society for Testing and Materials C127 Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate. [10] ASTM D423-54 Standard Method of Test for liquid Limit (Withdrawn 1982
[11] Iraq standard specification,1989., No.(45) for coarse and fine aggregate sieve analysis.
[12] American Society for Testing and Materials -C,131-96, 2004. tandard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine,4p
[13] Iraq standard specification, 1989., No.(41) for mechanical abrasion by using los Angeles device page 5.
[14] American Society for Testing and Materials C88 - 99, 2004. "Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate" , Volume 4, 1-5p.
[15] British Standards 812-112,1990 Method for determination aggregate impact value.
[16] British Standards Institution (BSI), 1975–1989. Methods for Sampling and Testing of Mineral Aggregates, Sands and Fillers. British Standards Institution BS, 812.
[17] ISRM International Society of Rock Mechanics, 1973 for point load test.
[18] American society for testing and materials (ASTM) C-295-03,2004, standard guide for petrographic examination of aggregates for concrete, 8p.
[19] British standard 1377-3,1990.T.5. determination of sulphate content in soil.
[20] American society for testing and materials 2004, Earth Manual ,E8 determining total dissolved solids
[21] British standard 1377-3,1990.T.3. organic matter content method.
[22] British standard 1377-3, 1990.T.9. for determination of soil pH value.
[23] American Association of State Highway and Transportation Officials (AASHTO). (2000b). Standard Specifications for Transportation Materials and Methods of Sampling and Testing, Twentieth Edition: Part II – Tests. American Association of State Highway and Transportation Officials. Washington, D.C.
[24] American Society for Testing and Materials D1557 D 1557 - Standard Test Methods for Laboratory, Compaction Characteristics of Soil Using Modified Effort
[25] British standard 812, part 105,1985, Testing aggregates. Methods for determination of particle shape. Flakiness index.
[26] Test method LS -609 No.23.2001.page1-18 ministry of transportation. Laboratory testing manual Ontario .petrographical analysis of coarse aggregate ]and[ASTM C295
[27] http://theconstructor.org/building/building-material/determination-of-aggregate-impact-value/1355/
[28] Hawkins, A. B. 1986. Rock Description, Geo. societ. engineering Geology, special publication, No.2, pp59-72.