848 kg of sand and 486 kg of crushed stone will be used in a 1m² concrete batch. Calculate, a) Volumetric mixture proportion of each aggregate. b) The grain size distribution of the aggregate mixture. c) Discuss the suitability of this mixture (compare with the reference curves A32 and 832) assing 31 5 16

848 kg of sand and 486 kg of crushed stone will be used in a 1m² concrete batch. Calculate, a) Volumetric mixture proportion of each aggregate. b) The grain size distribution of the aggregate mixture. c) Discuss the suitability of this mixture (compare with the reference curves A32 and 832) assing 31 5 16

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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5.22 A sieve analysis test was performed on a sample of coarse aggregate and pro- duced the results in Table P5.22. a. Calculate the percent passing through each sieve. b. What is the maximum size? c. What is the nominal maximum size? d. Plot the percent passing versus sieve size on a semilog gradation chart. TABLE P5.22 e. Plot the percent passing versus sieve size on a 0.45 gradation chart (Figure A.25). f. Referring to Table 5.5 (ASTM C33), what is the closest size number and does it meet the gradation for that standard size? Sieve Size 3 in. 2 in. Questions and Problems 1-1/2 in. 1 in. 3/4 in. 1/2 in. 3/8 in. No. 4 Pan Amount Retained, lb 219 0 0 3.7 15.9 12.0 13.5 26.7 10.1 1.3
What is maximum capacity of measure should be used in determining the density of the concrete if the nominal maximum aggregate size of coarse aggregate is 25.0 mm? a.) 11 Liters b.) 14 Liters c.) 6 Liters d.) 28 Liters
Q2 (a) A specific gravity test was performed on a sample of fine aggregate and produced the following results: Mass of sand (saturated surface dry) = 520g Mass of sand (oven dry) = 510g Mass of pycnometer with full of water = 1550g Mass of pycnometer with sand and water = 1900g i. Calculate the apparent specific gravity of the fine aggregate. ii. Calculate the gross apparent specific gravity of fine aggregate.
Three samples of aggregates were taken weighed in moist and dry condition. Moist Dry Unit Absorption Volume (m3) Unit Aggregate Wt. Wt. (%) (kN/m3) (kN/m3) Sample 1 23.425 20.018 5.14 0.366 Sample 2 22.7 18.757 3.87 0.695 Sample 3 20.292 18.387 2.62 0.237 Where; Unit weight of water = 9.81 kN/m3 %3D Determine the average free moisture content of the three samples.
A sieve analysis test was performed on a sample of aggregate and produced the results shown in Table P5.21. TABLE P5.21 Amount Sieve Size, Amount Sieve Size, mm Retained, g mm Retained, g 25 1.18 891.5 19 376.7 0.60 712.6 12.5 888.4 0.30 625.2 9.5 506.2 0.15 581.5 4.75 1038.4 0.075 242.9 2.36 900.1 Pan 44.9 Calculate the percent passing through each sieve. Plot the percent passing versus sieve size on: a. a semilog gradation chart, and b. a 0.45 gradation chart (Figure A.25). What is the maximum size? What is the nominal maximum size?
1. Fineness modulus of the aggregate Weight Retained Individual Cumulative Percent Sieve (g) Percent Percent Passing 4.75mm 31.5 2.36mm 67.6 1.18mm 96.5 600um 111.1 300um 60.5 150um 115.6 75um 17.5 pan 31.5 O a. 2.96 O b. 2.76 O c. 2.54 O d. 2.34
a. When is it necessary to consolidate concrete by vibration in test method C231? Discuss the process of vibration when placing and consolidating the sample.b. When rodding a layer of concrete in method C138, is it okay to hit the bottom of the measure? If not, how is it supposed to be done?c. Calculate the yield of concrete if the mass of the batch is 4800 kg and its density is found to be 350 kg/m3.
Three samples of aggregates were taken weighed in moist and dry condition. Moist Dry Unit Unit Absorption Volume Aggregate Wt. Wt. (%) (m³) (kN/m) (kN/m³) Sample 1 23.425 20.018 5.14 0.366 Sample 2 22.7 18.757 3.87 0.695 Sample 3 20.292 18.387 2.62 0.237 Where; Unit weight of water = 9.81 kN/m3 Determine the average free moisture content of the three samples.
Compressive Strength is conducted for each aggregate with 3 specimens for each no. of days of curing. The recorded maximum load when the specimen breaks are as follows 7 Days (kN) | 486.73 14 Days (kN) 28 Days (kN) 678.8 ... 746.3 3/8" Sample 513.14 694.2 754.7 360.71 679.8 759.8 7 Days (kN) 14 Days (kN) 28 Days (kN) 231.86 339.8 377.7 3/4" Sample 252.04 339.6 381.1 206.69 343.3 379.9 Compute the compressive strength, in psi, for each size of aggregate on each no. of days of curing. Please indicate if the sample passed the required strength for each no.of days of curing. Conversion: 1lb-f = 4.488 N Attach your solution on the box below, image type.
If the transversal Ultrasonic Pulse Velocity of a concrete mixture was measured as 2700 m/s, and the specific gravity and the Poisson's ratio of this concrete mixture are known to be 2.4 and 0.20, respectively, what is the dynamic shear modulus this concrete sample? a. 175 MPa O b. 17.5 GPa O C. 17.5 MPa O d. 14.6 GPa O e. 146 MPa
Civil Engineering help Table 1 Test No. Rate of deformation Avg. sample length (mm) Avg. sample diameter (mm) Ring factor Cell pressure (kPa) (mm/min). (AIP/N) 100 74.7 38.1 1.27 0.9845 400 75.3 37.7 Table 2 Deformation (mm) Force gauge (divisions) Test 1 Test 2 0.5 22 24 1.0 46 44 1.5 2.0 62 68 80 82 2.5 102 106 132 3.0 121 134 3.5 149 4.0 157 173 5.0 6.0 7.0 182 200 219 231 241 194 195 8.0 197 90 198 200 199 | 196 246 10.0 252 251 244 11.0 12.0 By producing Mohr circles and deviatoric stress vs axial strain plots of the tests using the data presented, determine the average Young's modulus, E (MPa) from the most linear portion of the tests deviatoric stress vs axial strain nints Enterani l ...
Ultrasonic pulse velocity (UPV) test in through transmission is applied on a concrete sample. If the travel path is 12 cm and transit time is 24 us, what is the UPV of this concrete sample? Comment on the quality of the concrete? O a. 2000 m/s, weak O b. 200 m/s, very weak O c. 5000 m/s, very good O d. 500 m/s, very weak O e. 3500 m/s, questionable