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# Procedure for coarse aggregate the aggregate was

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Procedure: For coarse aggregate: The aggregate was submerged in water for 24 hours. The aggregate is approximately divided to 4 equal parts (quartering method). One part is taken as a sample. The sample surface is dried by piece of cotton (to become in SSD condition). The mass of sample in SSD condition is measured. The sample is weight when it is put in basket which submerged in water. The sample is weight after put it in oven dry for 24-hours. For fine aggregate:

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The aggregate was submerged in water for 24 hours. The aggregate is approximately divided to 4 equal parts (quartering method). One part is taken as a sample. For sand (the sample is dried by the hot plate) but for lenticular aggregate (the sample is dried by piece of cotton). The mass of two types of samples in SSD conditions are measured by the balance which has uncertainty 0.5 The mass of flask which filled in water is measured. The sample is put in the same flask which filled in water. The mass of the flask which contain water and sample is measured. The sample is put in the pan. The mass of the sample is measured after put it in the oven. 6 Data & calculations: For course aggregate: FOLIYEA: Dry mass (A) = 600.5 gm. Saturated surface dry mass (B) = 614.5 gm. Submerged mass(C) = 371.5 gm. Bulk dry specific gravity = A/ (B-C) = 600.5/ (614.5-371.5) = 2.47 Bulk SSD specific gravity = B/ (B-C) =614.5/ (614.5-371.5) = 2.53 Apparent specific gravity = A/ (A-C) = 600.5/ (600.5-371.5) = 2.62 Absorption ratio = ((B-A)/ A) * 100% = ((614.5-600.5)/ 600.5) * 100% = 2.33% HUMOSYIEA: Dry mass (A) = 259.5 gm.
Saturated surface dry mass (B) = 271.5gm. Submerged mass (C) = 164.5 gm. Bulk dry specific gravity = A/ (B-C) = 259.5/ (271.5-164.5) = 2.43 Bulk SSD specific gravity = B/ (B-C) =271.5/ (271.5-164.5) = 2.54 Apparent specific gravity = A/ (A-C) = 259.5/ (259.5-164.5) = 2.73 Absorption ratio = ((B-A)/ A) * 100% = ((271.5-259.5)/ 259.5) * 100% = 4.62% For fine aggregate: ADASIYEA: Dry mass (A) = 141.38 gm Saturated surface dry mass (B) = 147.76 gm Pycnometer filled with water mass (C) = 1665.2 gm 7 Pycnometer filled with water & sample mass (D) = 1755.66 gm Bulk dry specific gravity = A/ (C+B-D) = 141.38/ (1665.2+147.76-1755.66) = 2.47 Bulk SSD specific gravity = B/ (C+B-D) = 147.76/ (1665.2+147.76-1755.66) = 2.58 Apparent specific gravity = A/ (C+A-D) =141.38/ (1665.2+141.38-1755.66) = 2.78 Absorption ratio = ((B-A)/ A) * 100% = ((147.76-141.38)/ 141.38) * 100% = 4.51% SAND: Dry mass (A) = 165.77 gm Saturated surface dry mass (B) = 166.38 gm

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