SIEVE NO. AMOUNT RETAINED (g) 215 1 885 980 2,350 3/8 1,190 4 2,205 8. 1,985 10 1,840 40 1,650 100 980 200 660 PAN 60 Total 15,000
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- Q3) The result of sieve analysis of a sample of aggregate given in the Table below. According to ASTM C 33, the sample is acceptable or not? BS Total mass of sample 4 80 g Sieve size 10 mm 5 mm 2.36 mm 1.18 mm 600 μm 300 μm 150 μm €150μm ASTM in 4 8 16 30 50 100 <-100 Mass retained O 80 40 80 110 68 61The following are the results in the test for specific gravity of fine aggregates:Mass of Oven-dried specimen in air = 502gMass of Pycnometer filled with water, to calibration mark = 640gMass of Saturated Surface Dry Specimen = 510gMass of Pycnometer filled with specimen and water to calibration mark = 950gCalculate the absorption, apparent specific gravity, bulk specific gravity in SSD condition, and bulk specific gravity in OD conditionCalculate the sieve analysis shown in Table P5.20, and plot on a 0.45 power gra- dation chart. What is the maximum size? What is the nominal maximum size? TABLE P5.20 Cumulative Amount Sieve Size, Amount Cumulative Percent Percent mm Retained, g Retained, g Retained Passing 37.5 25 315 19 782 9.5 1493 4.75 677 0.60 1046 0.075 1502 Pan 45
- 5.20 Calculate the sieve analysis shown in Table P5.20, and plot on a 0.45 power gra- dation chart. What is the maximum size? What is the nominal maximum size? TABLE P5.20 Sieve Size 37.5 mm 25 mm 19 mm 9.5 mm 4.75 mm 0.60 mm 0.075 mm Pan Amount Retained, g 0 315 782 1493 677 1046 1502 45 Cumulative Amount Retained, g Cumulative Percent Percent Passing RetainedRound off final ans, dont round initial valuesA sample of a dry course-grained material of 500 grams was shaken through a nest of sieves and the following results are obtained: Sieve No. Opening (mm) 4.75 Mas Retained (grams) 0.0 14.8 4 10 2.00 20 0.85 98.0 40 0.425 90.1 100 0.15 181.9 200 0.075 108.8 Pan 6.4 1. Determine the effective size (mm). 2. Determine the uniformity coefficient. 3. Determine the coefficient of curvature.
- Question * Evaluate the determinant: 1 6 0 4 2 7 053 O -101 110 101 -101Sieve 1. A 500gram sample of fine aggregates was sieved. Determine FM 3/8" #4 #8 # 16 # 30 # 50 # 100 Pan Amount Retained on (gr) 0 40 70 105 115 125 30 15 Amount Retained on (%) % Cumulative Retained onThe following plot belongs to a concrete slab and is intended to determine the formwork removal time. Formworks are planned to be removed when 60% of maturity of the laboratory samples cured at 20 °C for 7 days is reached. Determine the formwork removal time (in days) if the datum temperature is -5°C. 25 Temperature (°C) 20 15 10 5 01 2 3 4 5 6 7 8 Age (days) 9 10 11 12 13 14
- Calculate the fineness modulus of this fine aggregate sample. Report your answer to the nearest 1 decimal place (tens). Sieve Size, Retained Mass, % Retained Cumulative % % Passing mm (US) 12.5 (1/2") 9.5 (3/8") 4.75 (#4) 2.36 (#8) 1.18 (#16) 0.600 (#30) 0.300 (#50) 0.150 (#100) 0.075 (#200) Grams on Sieves retained on seives 3.0 0.36 0.36 99.64 10.0 1.22 1.58 98.42 30.0 3.65 5.22 94.78 55.0 6.68 11.91 88.09 230.0 27.95 39.85 60.15 175.0 21.26 61.12 38.88 140.0 17.01 78.13 21.87 120.0 14.58 92.71 7.29 40.0 4.86 97.57 2.43 Pan 20.0 2.43 100.00 0.00 Total: 823.0Table P5.27 shows the grain size distributions of aggregates A, B, and C. The three aggregates must be blended at a ratio of 15:25:60 by weight, respectively. Using a spreadsheet program, determine the grain size distribution of the blend. TABLE P5.27 Percent Passing Sieve Size, mm 25 19 12.5 9.5 4.75 1.18 0.60 0.30 0.15 Aggregate A 100 100 100 77 70 42 34 28 20 Aggregate B 100 85 62 43 24 13 Aggregate C 100 100 84 51 29 19 18 14 9.V. DATA AND TABULATION 1. Depending upon the form of the specifications for use of the material under test, the report shall include the following: 1.1. Total percentage of material passing each sieve, or 1.2. Total percentage of material retained oneach sieve, or 1.3. Percentage ofmaterial retained between consecutive sieves. 2. Report percentages to the nearest wholenumber, except if the percentage passing the 75-um (No. 200) sieveis less than 10 %, it shall be reported to the nearest 0.1%. 3. Report the fineness modulus, when required, to the nearest 0.01. CUMULATIVE CUMULATIVE SIEV AMOUNT AMOUNT PERCENT PERCENT RETAINED, g (b) RETAINED, 9 (a) RETAINED, (c)=(b)*100/TÓT E PASSING SIZ (d)=100 - (c) AL 1% 215 885 3/4 980 1/2 2350 3/8 1190 4. 2205 1985 10 1840 40 1650 100 980 200 660 PAN 60 15000 ТОTAL [7]