Materials For Civil And Construction Engineers In Si Units
4th Edition
ISBN: 9781292154404
Author: Michael S Mamlouk
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 5.6QP
Define the following terms:
a. Saturated surface-dry condition of aggregates
b. Absorption of aggregates
c. Free water on aggregates
d. Referring to Figure 5.9, which portion of the water in the aggregate reacts with the cement in the PCC mix?
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Define the following terms:a. Saturated surface-dry condition of aggregatesb. Absorption of aggregatesc. Free water on aggregatesd. Referring to Figure , which portion of the water in the aggregate reacts with the cement in the PCC mix?
essence of determining moisture content and surface moisture of aggregates in construction. pls explain
A mix design requires 1160 kg/m3 of coarse aggregate (in dry condition), 599 kg/m3of fine aggregate (in dry condition) and 148 kg/m3 of water. The absorption capacityof the coarse aggregate is 0.4 % while the moisture content is 1.5%. The absorptioncapacity of the fine aggregate is 0.4 % while the moisture content is 4%. Pleaseanswer the following questions based on information given. a. What is the amount of Moist Coarse Aggregate? b. What is the amount of SSD Fine Aggregate? c. What is the amount of Moist Fine Aggregate? d. What is the amount of water after adjusting for moisture?
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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- what is the effect of bulk specific gravity, bulk specific gravity (SSD), apparent specific gravity, and percent absorption to concrete mix? what is the range of these four to fine aggregates and coarse aggregate. If the result of these four is low or high, what is your recommendation?arrow_forwardConcrete technology/Aggregate properties A 1000g sample of coarse aggregate in the SSD condition in air weighed 633g when immersed in water, Calculate the BSG of the aggregate. If some sample from same batch of aggregate after being exposed to air dry condition for some time weighed 978 g in air and weighed 630 g after they immersed in water for 2 hours, calculate the moisture content, MC(SSD), of the air dried aggregate at that time.arrow_forwardIn proportioning a concrete mix, the coarse and fine aggregates had the following properties respectively; Coarse: Dry weight: 800lb, 3,2% MC, 2.0% AC, Fine: Dry weight 350 lb, 1.2% MC, 2.9% AC. How much should the water be adjusted to account for the agregate moisture?arrow_forward
- What are the possible conclusion in specific gravity and absorption of coarse aggregates?arrow_forwardDefine Particle Shape and Texture of Fine Aggregates.arrow_forwardWhat should be the observation and analysis for specific gravity of coarse aggregate at saturated surface-dry (SSD) condition and its water absorption? Also, what is the conclusion for this? Ref: ASTM C127arrow_forward
- Define the following terms:a. Saturated surface-dry condition of aggregatesb. Absorption of aggregatesc. Free water on aggregatesd. Referring to Figure 5.9, which portion of the water in the aggregate reactswith the cement in the PCC mix?arrow_forwardA sieve analysis test was performed on a sample of coarse aggregate and produced the results in Tablea. 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.e. Plot the percent passing versus sieve size on a 0.45 gradation chart.f. Referring to Table (ASTM C33), what is the closest size number anddoes it meet the gradation for that standard size?arrow_forwardCompute for the corrected amount of water needed in the concrete mix if the mass of fine and coarse aggregates are 650 kg and 780 kg, and both have an absorption of 1.5% and 2% respectively. Water/cement ratio is 0.50 and the mass of cement is 260kg.arrow_forward
- Discuss five different desirable characteristics of aggregate used in Portland cement concrete (PCC).arrow_forwardWhat does the Specific Gravity of Fine Aggregate, Absorption of Fine Aggregate, and Surface Moisture of Fine Aggregate matter to engineering? and how it is essential in concrete.arrow_forwardWhat is the means of this ASTM C70 - Standard Testing Method for Surface Moisture in Fine Aggregatesarrow_forward
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