Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Transcribed Image Text:Determine a mix design that meets the following criteria:
a. Target strength: 4,000 psi
b. Target slump: 2 inches
c. Moisture content (FA) = 8 percent
d. Absorption content (FA) = 3 percent
e. Moisture content (CA) = 3 percent
f. Absorption content (CA) = 1 percent
g. Fineness modulus of CA = 2.6
h. Dry-rodded unit weight of coarse aggregate: Select a value based on the class data
gathered in lab 1 or assume 97 lb/ft³
i.
Specific gravity of cement, fine aggregate and coarse aggregate = 3.15, 2.65, and 2.68
respectively
The concrete is to be used for an approach slab in Northern New York which has dimensions of
10 ft wide by 20 ft in length and thickness of 8 inches. Reinforcement is placed with a clear
spacing of 8 inches in the longitudinal direction and 12 inches in the transverse. In determining
the amount of concrete needed for the slab you may neglect the reinforcing bar and only use the
10ft x 20ft x 0.67ft slab dimensions.
You should complete a mix design that includes the batch weights of cement, fine aggregate,
coarse aggregate and water. Include the estimated water cement ratio, amount of entrained air
and slump in this design. Use the guidelines put forth in Civil Engineering Materials, 2nd Edition
by Somayaji on pages 165-175. Make sure you adjust the amount of water batched for the mix
to account for the moisture condition of the aggregates.
Be sure to cite you work. Reference the tables that you use, citing the source and page number.
You will notice that many of the tables make reference to ACI 318 and 211 codes. This is the
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We need to design the concrete mic according to the given criteria using ACI 211 code
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- a. For an aggregate sample, if you know that the apparent relative density is 2.72 and the water absorption is 1.2%. The dry mass of the aggregate is 514 gm. Find the bulk and saturated surface dry (SSD) relative density values? b. Why does the maximum size of aggregate depend on the clear spacing between bars? Show with a simple sketch. Note: Please answer both a and b... Please answer the both questions.. I don't want single b answer.. thank youarrow_forwardThe following information is available from a specific gravity test on coarse aggregate: wt of SSD CA = 6135 g wt of submerged CA = 3901 g wt of oven-dry CA = 6008 g Calculate the bulk specific gravity (SSD), bulk specific gravity, apparent specific gravity, and absorption (SSD) of the materialarrow_forward2.638, 2.514, 2.437 O 2.651, 2.472, 2.364arrow_forward
- Students in the materials lab performed the specific gravity and absorption test (ASTM C127) on coarse aggregate and they obtained following data: a. Dry weight = 3862.1 g b. SSD weight = 3923.4 g c. Submerged weight = 2452.1 g 1. Calculate the specific gravity values (dry bulk, SSD, and apparent) and the absorption of the coarse aggregate. (Answer in 3 decimal places)arrow_forwardA sieve analysis test was performed on a sample of coarse aggregate and produced the following results. Referring to ASTM C33, what is the closest size number, and does it meet the gradation for that standard size?arrow_forward5.6 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?arrow_forward
- 3. A sample of coarse aggregate weighs 1072 g when ovendried, 1091 g when saturated surface- dried, and 667.6 g when submerged. Calculate the bulk specific gravity, apparent specific gravity, and absorption.arrow_forwardplease quickly thanks !arrow_forward4 pts Question 23 What is the fineness modulus of this aggregate? % Cumulative Retained Retained Mass 0% Sieve Size (US) (g) Retained Passing 1" 3/4" 1/2" 3/8" # 4 650 18.3 700 19.7 632 17.8 175 4.9 # 8 200 5.6 #16 W 150 4.2 #30 125 3.5 #50 331 9.3 #100 288 8.1 #200 250 7 Pan 50 1.4 Total 3551 O 5.20 O 1.57 O 3.89 O 6.50arrow_forward
- 9.31 Based on the data shown in Table P9.31, select the blend for a Superpave design aggregate structure. Assume <0.3 million ESAL and 19 mm nominal maximum aggregate size. Table P9.31 Blend Data 1 2 3 2.451 2.465 2.467 Gmb Gmm Gp P P3 Pd Gsb Hini Hdes 2.585 2.654 2.584 1.030 1.030 1.030 5.9 5.5 5.8 94.1 94.5 94.2 4.5 4.5 4.5 2.657 2.667 2.705 127 135 124 113 114 118arrow_forwardAnswer question 5.36arrow_forwardIs it correct to say that the fineness modulus of aggregate B is 0.44 asumming aggregate B is a fine aggregate and also that the percent passing the 1.18mm, No. 16 sieve is 56%?arrow_forward
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