Table P5.29 shows the grain size distribution for two aggregates and the specifi-cation limits for an asphalt concrete. Determine the blend proportion requiredto meet the specification and the gradations of the blend. On a semilog grada-tion graph, plot the gradations of aggregate A, aggregate B, the selected blend,and the specification limits.TABLE P5.29Percent PassingSieve Size, mm1912.59.54.752.360.600.300.150.075Specificationlimits10080–100 70-9050-70 35-5018–2913-238-164-10Aggregate A1008520255Aggregate B100100100856745321911

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Answered: Table P5.29 shows the grain size…

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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Answer question 5.43
A sieve analysis test was performed on a sample of aggregate and produced the results shown in Table P5.21. TABLE P5.21 Amount Sieve Size, Amount Sieve Size, mm Retained, g mm Retained, g 25 1.18 891.5 19 376.7 0.60 712.6 12.5 888.4 0.30 625.2 9.5 506.2 0.15 581.5 4.75 1038.4 0.075 242.9 2.36 900.1 Pan 44.9 Calculate the percent passing through each sieve. Plot the percent passing versus sieve size on: a. a semilog gradation chart, and b. a 0.45 gradation chart (Figure A.25). What is the maximum size? What is the nominal maximum size?
(c) Asphalt concrete mixture of AC 14 will be used to construct the wearing course layer. The coarse aggregate, fine aggregate and filler are used as materials to produce the asphalt concrete mixture. The aggregate gradation will be blended to fulfill the gradation limit according to JKR standard specification as shown in Table Q1(c)(i). Based on this statement, conclude the result of sieve analysis test of blended aggregate as shown in Table Q1(c)(ii). I Table Q1(c)(i): Gradation specification for AC 14 mixture BS Sieve Size (mm) Percentage passing by weight 28.0 20.0 14.0 10.0 5.0 3.35 1.18 0.425 0.150 0.075 100 90-100 76-86 50-62 40-54 18-34 12-24 6-14 4-8 I Act Go to
Given the following information from an asphalt mix: Gsb = 2.705 Gmm = 2.534 Gmb = 2.432 Gb = 1.014 Pb = 5.7% Unit weight of water = 62.4 Ib/ft3 Assume 1 ft for total volume. Draw mass/volume relationship and determine Mass of Mix (Mm) Ib., Mass of Binder (Mb) Ib., Volume of Binder (Vb) pcf, Volume of Void-less Mix (Vmm) Volume of Air (Va) pcf, Volume of Absorbed Asphalt (Vba) pcf, Volume of Effective Asphalt (Vbe) pcf. In addition, calculate Air Voids (VA) %, Voids in Mineral Aggregate (VMA) %, and Voids Filled with Asphalt (VFA)
CapsL 8 A Determine the range of final gradation of selected aggregates to prepare the job mix formula for binder course of a mixing plant according to data indicated in table below? Use the following tolerances: ± 6 % for 4.75 mm and above aggregate sizes, ± 4% for 2.36 and 0.30 mm aggregate sizes, and ± 2 % for 0.075 mm aggregate size. Note: use first try with 30%, 35%, 30% and 5% for groups A, B, C and D, respectively. Sieve Size 25 19 12.5 9.5 4.75 2.36 0.3 0.075 A (30%) Coarse Aggregate 100 99 56 31 4 0 0 0 % Passing B (35%) Natural Sand 100 100 100 100 100 89 15 4.2 C (30%) Crushed Sand 100 100 100 100 92 56 9 5 D (5%) Filler 100 100 100 100 100 100 97 88 Specification 100 90-100 76-90 56-80 35-65 23-49 5 19 39 Job Mix Formula Job Mix Formula Limitation 13.6
Table shows the grain size distribution for two aggregates and the specification limits for an asphalt concrete. Determine the blend proportion requiredto meet the specification and the gradations of the blend. On a semilog gradation graph, plot the gradations of aggregate A, aggregate B, the selected blend,and the specification limits.c
5.41 Aggregates from three sources having the properties shown in Table P5.41 were blended at a ratio of 25:60:15 by weight. Determine the properties of the aggregate blend. TABLE P5.41 Property Coarse aggregate angularity, percent crushed faces Bulk specific gravity Apparent specific gravity Aggregate 1 73 2.774 2.810 Aggregate 2 95 2.390 2.427 Sand N/A 2.552 2.684
10. A sample of coarse aggregate weighs 1072 g when oven- dried, 1091 g when saturated surface-dried, and 667.6 g when submerged. Calculate the bulk specific gravity, apparent specific gravity, and absorption.
(c) Table 1 shows the mass of fine aggregates used to conduct a specific gravity test. Calculate the; i) Dry bulk specific gravity ii) SSD bulk specific gravity i) Apparent specific gravity iv) Aggregate absorption. Table 1 Mass of Aggregate 600 g SSD Mass of Aggregate 589 g Mass of pycnometer with water 710 g Mass of pycnometer with water and aggregate 1090 g Mass of aggregate at cool temperature 498 g
Problem #1 The following figure shows the results from the dynamic modulus test for asphalt mixtures. The specimen is 4" in diameter and 6" in height. The gauge length for the axial LVDT is 4". Time lag is 0.25s. Find |E*I, and phase angle . Axial force(lbf) 65 60 40 20 0 -20 -40 -65 0 Dynamic modulus test result (gauge length = 4") 0.5 Time (second) 1 0.0010 0.0009 0.0006 0.0003 0 force (lbf) disp (in.) -0.0003 -0.0006 -0.0009 -0.0010 1.5 Axial displacement(in) 4"
7. Make a spread sheet blend template program to perform a blend gradation analysis for up to four stockpiles with the ability to produce automatically semilog or power 0.45 gradation charts. Use the table to demonstrate the template, and calculate the fineness modulus for the aggregate D. Aggregate Blend Percent (%) Sieve size (mm) 37.5 25 19 12.5 9.5 4.75 2.36 1.18 0.60 0.30 0.15 0.075 A 20 100 100 95 89 70 10 2 N|N 2 2 2 2 2 B 25 100 100 100 100 82 55 15 55 32 2 1 с 25 Percent Passing 100 100 100 100 100 100 69 55 35 22 15 6 D 30 100 100 100 100 100 100 86 54 34 25 14 5
Three samples of aggregates were taken weighed in moist and dry condition. Moist Dry Unit Unit Absorption Volume Aggregate Wt. Wt. (%) (m³) (kN/m) (kN/m³) Sample 1 23.425 20.018 5.14 0.366 Sample 2 22.7 18.757 3.87 0.695 Sample 3 20.292 18.387 2.62 0.237 Where; Unit weight of water = 9.81 kN/m3 Determine the average free moisture content of the three samples.

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