Homework 8: A sample of rock was found with a total weight of 18.18 kg and a volume of 0.009 m'. When it was dried in the oven for twenty-four hours, it was found that its weight was equal to 16.13 kg. If you know that the true specific weight of the rock is 2.7. Find the following: Total density, dry density, density of grains of solid rock minerals, porosity, moisture content, degree of saturation, air content.

Homework 8: A sample of rock was found with a total weight of 18.18 kg and a volume of 0.009 m'. When it was dried in the oven for twenty-four hours, it was found that its weight was equal to 16.13 kg. If you know that the true specific weight of the rock is 2.7. Find the following: Total density, dry density, density of grains of solid rock minerals, porosity, moisture content, degree of saturation, air content.

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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Homework 1: a sample of rock has a total mass of 300 gm and a dry mass of 250 gm with a real specific weight of 2.77 and a degree of saturation of 80%. Find the following: Total volume, volume of solid particles, volume of voids, total density, dry density, void ratio, porosity, moisture content. Ans: V=152.75 cm³, V-90.25 cm³, V, 62.5 cm³, y-1.964 gm/ cm³, Ya 1. 64 gm/ cm³, e-0.693, n-0.41, and 6-0.2 ]
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Problem 1: A sieve analysis of 1,135 grams of fine rock yields the following data in the table. The size of a sieve Restrained in each a Through a sieve(gr) sieve (gr) % in 1135 ½ in 56 1079 % in. 171 908 NO.4 262 646 NO.8 203 443 NO.30 182 261 NO.50 68 193 NO.100 57 136 NO.200 51 85 Pan 85 The total weight of example 1135 grams
Find the value of porosity e=0.43
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4) Calculate the amount of water necessary for slaking a quicklime obtained from a 1000 kg limestone with 5% (by weight) impurities. Is this amount larger or smaller than is necessary for a quicklime obtained from a pure limestone? (Ca:40, C:12, O:16, S:32, H:1)
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During the completion of a construction project, a soil sample was taken from an area of compacted earth fill for a sand-cone in-place density test. The following were obtained from the results of the test: • Weight of sand used to fill the test hole and the funnel of the sand-cone device = 845 g • Weight of sand to fill the funnel of the sand-cone device = 323 g • Unit weight of sand = 15.71 kN/m3 • Weight of wet soil excavated from test hole = 622 g • Moisture content of the soil excavated from the test hole = 16% %3D %3D Calculate the dry unit weight (kN/m³) of the excavated material