Materials For Civil And Construction Engineers In Si Units
4th Edition
ISBN: 9781292154404
Author: Michael S Mamlouk
Publisher: PEARSON
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Chapter 5, Problem 5.9QP
46.5 kg (102.3 lb) of fine aggregate is mixed with 72.3 kg (159.1 lb) of coarse aggregate. The fine aggregate has a moisture content of 2.0% and absorption of 3.4%, whereas the coarse aggregate has a moisture content of 1.3% and
absorption of 3.8%. What is the amount of water required to increase the moisture contents of both fine and coarse aggregates to reach absorption? Why is it important to determine the amount of water required to increase the moisture content of aggregate to reach absorption? Use one system of units only as specified by the instructor.
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46.5 kg (102.3 lb) of fine aggregate is mixed with 72.3 kg (159.1 lb) of coarse aggregate. The fine aggregate has a moisture content of 2.0% and absorption of 3.4%, whereas the coarse aggregate has a moisture content of 1.3% and absorption of 3.8%. What is the amount of water required to increase the moisture contents of both fine and coarse aggregates to reach absorption? Why is it important to determine the amount of water required to increase the moisture content of aggregate to reach absorption? Use one system of units only as specified by the instructor.
A sample of lightweight coarse aggregate weighs 532.3 g when oven-dried, 615.7 g when saturated surface-dried, and 191.3 g when submerged. Calculate the bulk specific gravity, apparent specific gravity, and percent absorption.
For fine aggregate: bulk specific gravity=2.60, SSD Bulk Specific Gravity=2.63, apparent Specific gravity= 2.68, percent absorption=1.54%
For coarse aggregate= bulk specific gravity= 2.62, SSD specific gravity=2.63, apparent specific gravity= 2.65, percent absorption=1.70%
From the data above, what can you conclude about these bulk aggregate, ssd bulk specific gravity, apparent specific gravity, and percent absorption?
What is the effect of these value in concrete?
Chapter 5 Solutions
Materials For Civil And Construction Engineers In Si Units
Ch. 5 - Prob. 5.1QPCh. 5 - Discuss five different desirable characteristics...Ch. 5 - Discuss five different desirable characteristics...Ch. 5 - The shape and surface texture of aggregate...Ch. 5 - Define the following terms: a. Saturated...Ch. 5 - Three samples of fine aggregate have the...Ch. 5 - A sample of wet aggregate weighed 297.2 N. After...Ch. 5 - 46.5 kg (102.3 lb) of fine aggregate is mixed with...Ch. 5 - Samples of coarse aggregate from a stockpile are...Ch. 5 - Base course aggregate has a target dry density of...
Ch. 5 - Calculate the percent voids between aggregate...Ch. 5 - Calculate the percent voids between aggregate...Ch. 5 - Coarse aggregate is placed in a rigid bucket and...Ch. 5 - The following laboratory tests are performed on...Ch. 5 - Students in the materials lab performed the...Ch. 5 - The specific gravity and absorption test (ASTM...Ch. 5 - Prob. 5.18QPCh. 5 - Calculate the sieve analysis shown in Table P5.19...Ch. 5 - Calculate the sieve analysis shown in Table P5.20,...Ch. 5 - A sieve analysis test was performed on a sample of...Ch. 5 - A sieve analysis test was performed on a sample of...Ch. 5 - Draw a graph to show the cumulative percent...Ch. 5 - Referring to Table 5.6, plot the specification...Ch. 5 - Referring to the aggregate gradations A, B, and C...Ch. 5 - Table P5.26 shows the grain size distributions of...Ch. 5 - Table P5.27 shows the grain size distributions of...Ch. 5 - Three aggregates are to be mixed together in the...Ch. 5 - Table P5.29 shows the grain size distribution for...Ch. 5 - Laboratory specific gravity and absorption tests...Ch. 5 - Table P5.31 shows the grain size distribution for...Ch. 5 - Prob. 5.32QPCh. 5 - Laboratory specific gravity and absorption tests...Ch. 5 - Prob. 5.34QPCh. 5 - Define the fineness modulus of aggregate. What is...Ch. 5 - Calculate the fineness modulus of aggregate A in...Ch. 5 - Calculate the fineness modulus of aggregate B in...Ch. 5 - A portland cement concrete mix requires mixing...Ch. 5 - Discuss the effect of the amount of material...Ch. 5 - Aggregates from three sources having the...Ch. 5 - Aggregates from three sources having the...Ch. 5 - A contractor is considering using three stockpiles...Ch. 5 - Prob. 5.43QPCh. 5 - What are the typical deleterious substances in...Ch. 5 - Review ASTM D75 and summarize the following: a....
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- 500 gm oven dry fine aggregate was tested to find its physical properties. The output from the test was as follows: SSD = 510 gm, mass of the vessel full of water = 1200 gm, mass of vessel plus sand and topped up with water= 1500 gm, mass in wet condition 518 gm, Apparent specific gravity= 2.5 . The grading of the fine aggregate is in the table below. Answer the followings: 1-Moisture content % is 2- The mass of oven dried sand isarrow_forward46.5 kg of fine aggregate is mixed with 72.3 kg of coarse aggregate. The fine aggregate has a moisture content of 2.0% and its absorption is 3.4% whereas the coarse aggregate has a moisture content of 1.3% and its absorption is 3.0%. Determine the amount of water required to increase the moisture content so that there is 1% free moisture in the aggregate blend.arrow_forwardFor concrete production, we mix 625 kg of fine aggregate and 830 kg of coarse aggregate. The fine aggregate has a moisture content of 2.3% and absorption of 3.2%, whereas the coarse aggregate has a moisture content of 1.5% and absorption of 2.8%. Calculate the amount of water required to increase the moisture contents of both fine and coarse aggregate to reach absorption?arrow_forward
- The mass of aggregate B has been reduced and weighed to conduct an aggregate test shown in Table 2. (e) Calculate the: (iii)apparent specific gravity, and the (iv) aggregate absorption.arrow_forwardThe mass of aggregate B has been reduced and weighed to conduct an aggregate test shown in Table 2. (a) Calculate the: (i) dry bulk specific gravity (ii) SSD bulk specific gravity,arrow_forwardThe mass of fine aggregate B has been reduced and weighed to conduct an aggregate test shown in Table 2. (e) Calculate the dry bulk specific gravity, SSD bulk specific gravity, apparent specific gravity, and the aggregate absorption.arrow_forward
- Specific Gravity and Absorption of Coarse Aggregates What are the possible discussion of observations for specific gravity and absorption of aggregate to observed values?arrow_forward500 gm oven dry fine aggregate was tested to find its physical properties. The output from the test was as follows: SSD = 510 gm, mass of the vessel full of water = 1200 gm, mass of vessel plus sand and topped up with water= 1500 gm, mass in wet condition 518 gm, Apparent specific gravity= 2.5 . The grading of the fine aggregate is in the table below. Answer the followings:arrow_forward500 gm oven dry fine aggregate was tested to find its physical properties. The output from the test was as follows: SSD = 510 gm, mass of the vessel full of water = 1200 gm, mass of vessel plus sand and topped up with water= 1500 gm, mass in wet condition 518 gm, Apparent specific gravity= 2.5 . The grading of the fine aggregate is in the table below. Answer the followings choose the correct answer 1- The fineness modulus (F.M) is a- 2.6 b- 2.8 c- 2.4 d- 2.7 e- 2.5 2- The bulk specific gravity is a- 2.63 b- 2.53 c- 2.33 d- 2.43 e- 2.73 3- Absorption% is a- 4.5% c- 2.0% d- 6.0% e- 3.6% f- 5.2%…arrow_forward
- 500 gm oven dry fine aggregate was tested to find its physical properties. The output from the test was as follows: SSD = 510 gm, mass of the vessel full of water = 1200 gm, mass of vessel plus sand and topped up with water= 1500 gm, mass in wet condition 518 gm, Apparent specific gravity= 2.5 . The grading of the fine aggregate is in the table below. Answer the followings: 1- The fineness modulus (F.M) is 2- The bulk specific gravity is 3- Absorption% is 4- Moisture content % is 5- The mass of oven dried sand isarrow_forwardWhat are the possible conclusion in specific gravity and absorption of coarse aggregates?arrow_forwardLaboratory specific gravity and absorption tests are run on two coarse aggregate sizes, which have to be blended. The results are as follows:Aggregate A: Bulk specific gravity = 2.491; absorption = 0.8,Aggregate B: Bulk specific gravity = 2.773; absorption = 4.6,a. What is the specific gravity of a mixture of 60% aggregate A and 40% aggregate B by weight?b. What is the absorption of the mixture?arrow_forward
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Aggregates: Properties; Author: nptelhrd;https://www.youtube.com/watch?v=49yGZYeokKM;License: Standard YouTube License, CC-BY