Materials for Civil and Construction Engineers (2nd Edition)
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ISBN: 9781292154411
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Chapter 1, Problem 1.48QP
(a)
To determine
Find the mean, standard deviation, and the coefficient of variation of the data.
(b)
To determine
To create a control chart for the given data in spreadsheet and provide comments.
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A sample of coarse aggregate is placed in a bucket of know volume (0.5 ft^3) and rodded with a tamping rod to determine its unit weight. The empty weight of the bucket is 20.3 lb. The weight of the bucket filled with dry aggregate was:
Trial 1: 69.6 lbTrial 2: 68.2 lbTrial 3: 71.6 lbTrial 4: 70.8 lbTrial 5: 72.0 lb
Based on the provided data determine the (i) average, standard deviation and coefficient of variance of the dry rodded unit weight; (ii) % voids of the aggregate sample if Gs = 2.620
The table below includes the coefficients of both the dynamic modulus (|E*|) sigmoidal function and the shift factor-temperature function. Determine the |E*| at the mid of the asphalt concrete layer of the pavement structure given in Question 2 for the following two conditions:
The pavement temperature at the mid of the asphalt layer is 50 ºF and the traffic speed is 70 mph.
The pavement temperature at the mid of the asphalt layer is 100 ºF and the traffic speed is 30 mph.
Discuss the result
d
a
b
g
a
b
c
4.810
1.731
0.557
0.628
0.00015
-0.101
6.316
* Note that the |E*| units in the sigmoidal function is in psi and the temperature unit in the shift factor equation is in ºF
Table below shows the result of sieve analysis test on a sample of fine aggregate. What is the fineness modulus for this aggregate?
Sieve size, mm
9.5
4.75
2.36
1.18
0.6
0.3
0.2
0.15
Percent passing
100
89
61
29
18
14
10
9
3.30
3.20
320
330
Chapter 1 Solutions
Materials for Civil and Construction Engineers (2nd Edition)
Ch. 1 - State three examples of a static load application...Ch. 1 - A material has the stressstrain behavior shown in...Ch. 1 - A tensile load of 50.000 lb is applied to a metal...Ch. 1 - A tensile load of 190 kN is applied to a round...Ch. 1 - A cylinder with a 6.0 in. diameter and 12.0 in....Ch. 1 - A metal rod with 0.5 inch diameter is subjected to...Ch. 1 - A rectangular block of aluminum 30 mm 60 mm 90...Ch. 1 - A plastic cube with a 4 in. 4 in. 4 in. is...Ch. 1 - A material has a stressstrain relationship that...Ch. 1 - On a graph, show the stressstrain relationship...
Ch. 1 - The rectangular block shown in Figure P1.11 is...Ch. 1 - The rectangular metal block shown in Figure P1.11...Ch. 1 - A cylindrical rod with a length of 380 mm and a...Ch. 1 - A cylindrical rod with a radius of 0.3 in. and a...Ch. 1 - A cylindrical rod with a diameter of 15.24 mm and...Ch. 1 - The stressstrain relationship shown in Figure...Ch. 1 - A tension test performed on a metal specimen to...Ch. 1 - An alloy has a yield strength of 41 ksi, a tensile...Ch. 1 - Prob. 1.21QPCh. 1 - Figure P1.22 shows (i) elasticperfectly plastic...Ch. 1 - An elastoplastic material with strain hardening...Ch. 1 - A brace alloy rod having a cross sectional area of...Ch. 1 - A brass alloy rod having a cross sectional area of...Ch. 1 - A copper rod with a diameter of 19 mm, modulus of...Ch. 1 - A copper rod with a diameter of 0.5 in., modulus...Ch. 1 - Define the following material behavior and provide...Ch. 1 - An asphalt concrete cylindrical specimen with a...Ch. 1 - What are the differences between modulus of...Ch. 1 - Prob. 1.33QPCh. 1 - A metal rod having a diameter of 10 mm is...Ch. 1 - What is the factor of safety? On what basis is its...Ch. 1 - Prob. 1.36QPCh. 1 - Prob. 1.37QPCh. 1 - A steel rod, which is free to move, has a length...Ch. 1 - In Problem 1.38, if the rod is snugly fitted...Ch. 1 - A 4-m-long steel plate with a rectangular cross...Ch. 1 - Estimate the tensile strength required to prevent...Ch. 1 - Prob. 1.42QPCh. 1 - Briefly discuss the variability of construction...Ch. 1 - In order to evaluate the properties of a material,...Ch. 1 - A contractor claims that the mean compressive...Ch. 1 - A contractor claims that the mean compressive...Ch. 1 - Prob. 1.47QPCh. 1 - Prob. 1.48QPCh. 1 - Prob. 1.49QPCh. 1 - Briefly discuss the concept behind each of the...Ch. 1 - Referring to the dial gauge shown in Figure P1.51,...Ch. 1 - Repeat Problem 1.51 using the dial gauge shown in...Ch. 1 - Measurements should be reported to the nearest...Ch. 1 - During calibration of an LVDT, the data shown in...Ch. 1 - During calibration of an LVDT, the data shown in...
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- The following data are recorded from a Bending Beam Rheometer test on asphalt binder:• Test temperature = - 1 8.0°C• Beam width = 12.70 mm• Beam Thickness = 6.35 mm• Distance between beam support = 102 mm. Assuming the load and length of the beam are constants throughout the test:a) Plot the relationship between deflection and time.b) Plot the relationship between stiffness S(t) and time (t) on a logarithmic scale.c) Fit a second degree polynomial regression equation to the Log(S(t)) Vs. Log(t)relationship established in part (b) above.d) Use the regression equation to find the rate at which the creep stiffness changes withloading (m(t)) at the time increments shown in the above table.e) Demonstrate whether this asphalt meets the Superpave requirements for low temperaturecracking or not. Please show all work and explanationarrow_forwardWhat is the significance of the results obtained after calculating Liquid limit, Plastic limit and Plasticity indexarrow_forwardSieve analysis of a sample of fine aggregate resulted in the following data No. Sieve number 4 8 16 30 50 100 Sieve opening (mm) 4.75 2.36 1.18 0.6 0.3 0.15 Weight retained (g) 13 75 120 126 105 61 A) The total weight of the sample, assuming no mass loss during the analysis, is______ (g) a) 505; b) 500; c) 550 B) The half sieve used in the experiment is________. a) No.8; b) No.50; c) none of the above C) The fineness modulus of the aggregate________. a) 6.13; b) 3.16; c) 1.36 D) The average size of the aggregate___________. a) No.30; b) No.4; c) No.16arrow_forward
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