A sieve analysis was conducted on a graded aggregate with a nominal maximum aggregate size of 20 m following data was obtained: Sieve size (mm) Mass retained (g) 37.5 26.5 19.0 9.5 4.75 2.36 Pan 0 80 120 800 1450 130 80 a) Find the mass passing and percentage passing on each sieve and fill in the table provided in the am sheet. b) Fill in the upper and lower limits of the Australian Standard (AS2758) for this aggregate type. c) As per the AS2758, is the aggregate well-graded? Explain your answer.

A sieve analysis was conducted on a graded aggregate with a nominal maximum aggregate size of 20 m following data was obtained: Sieve size (mm) Mass retained (g) 37.5 26.5 19.0 9.5 4.75 2.36 Pan 0 80 120 800 1450 130 80 a) Find the mass passing and percentage passing on each sieve and fill in the table provided in the am sheet. b) Fill in the upper and lower limits of the Australian Standard (AS2758) for this aggregate type. c) As per the AS2758, is the aggregate well-graded? Explain your answer.

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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Concept explainers

Types of Cement

Cement is a fine mixture of limestone, chalk, or marl and clay which when mixed with water, becomes compacted due to the formation of strong molecular bonds. Due to hydration, cement turns into a hard mass when left for a sufficient amount of time upon mixing with water. The water turns the cement compounds into gel-like submicroscopic particles having higher surface areas. It is due to the hydration properties of cement, they are often known as hydraulic cement. For instance, Portland cement is a popular example in this category.

Question

A sieve analysis was conducted on a graded aggregate with a nominal maximum aggregate size of 20 mm. Th
following data was obtained:
Sieve size (mm) Mass retained (g)
37.5
0
26.5
19.0
9.5
4.75
2.36
Pan
80
120
800
1450
130
80
a) Find the mass passing and percentage passing on each sieve and fill in the table provided in the answer
sheet.
b) Fill in the upper and lower limits of the Australian Standard (AS2758) for this aggregate type.
c) As per the AS2758, is the aggregate well-graded? Explain your answer.
d) What should be done if the aggregate is poorly graded?

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Answer part C and D only
Calculate the bulk specific gravity of combined aggregate if you know the specific gravities of coarse aggregate (C), fine aggregate (F) and Mineral Filler (MF) are 2.61, 2.63 and 2.71 respectively. The percent for C, F, and MF can be determined based on the gradation shown below Sieve size (in) Cumulative retained weight (gm ) 3/4 1/2 60 3/8 240 1/4 480 No.4 720 No.30 960 No.200 1128 pan 1200
The sieve analysis results of two fine aggregates are given below in Table 1. a) Calculate the fineness modulus for FAl and FA2. b) Calculate the percent passing for a combined aggregate which is a blend of 42% (by weight) aggregate A, 58% aggregate B. c) Plot the grading curve of the combined aggregate. (x-axis: sieve opening, y-axis: %passing) (Note: In the grading curve, you must show all data points. You can draw the gradation chart using excel or by hand. If you draw by hand, you have to use a ruler. The format of the gradation chart should be same as in the Problem Set-Aggregates solutions) d) How much percent of coarse aggregate having fineness modulus of 7.5 should be mixed with sample FAl to increase its fineness modulus to 5? Table 1. Results from sieve analysis % Passing FA2 Sieve label Opening (mm) 9.5 4.75 FAI 3/8" 100 100 No. 4 No. 8 100 91 2.36 97 79 No. 10 95 70 No. 16 1.18 91 49 No. 30 0.6 87 23 No. 50 0.3 40 8. 0.15 No. 100 No. 200 2 4 0.075
The table below presents the results of the sieve analysis conducted on a sample of aggregate. Given the bulk specific gravities of 2.65 for coarse aggregate, 2.69 for fine aggregate, and 2.73 for filler, determine the bulk density of the aggregate sample. Additionally, calculate the maximum aggregate size and nominal aggregate maximum size. Sieve size (mm) 37.5 % Passing 100 Specification limit 25 92 100 90-100 19 83 76-90 12.5 9.5 4.75 2.36 0.3 71 62 53 32 15 56-80 48-74 29-59 19-45 5-17 0.075 4 2-8
Samples of coarse aggregate from a stockpileare brought to the laboratory for determination of specific gravities. Thefollowing weights are found: (5 points) 1. Mass of moist aggregate sample as broughtto the laboratory: 5,298 g 2. Mass of oven dried aggregate: 5,216 g 3. Mass of aggregates submerged in water:3,295 g 4. Mass of SSD (Saturated Surface Dry)Aggregate: 5,227 g Find 1. The aggregate bulk dry specific gravity 2. The aggregate apparent specific gravity 3. Absorption (report as percent)
Analysis of Fine AggregatesFill in the table:
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(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
A sieve analysis test was performed on a sample of fine aggregate and produced the results in Table below. Calculate the percent passing through each sieve. What is the maximum size? What is the nominal maximum size? What is the Fineness Modulus? Plot the percent passing versus sieve size on a semi-log gradation size. (You can use Excel sheets or you can draw on a semi-log attached to page 3 of this assignment) Sieve size (mm) Amount retained (g) Cumulative amount retained (g) Cumulative percentage retained Percent passing 12.5 0 9.5 21 4.75 104 2.36 79 1.18 78 0.6 51 0.30 78 0.15 82 0.075 39 pan 5
1 - show complete solution
5.14 Coarse aggregate is placed in a rigid bucket and rodded with a tamping rod to determine its unit weight. The following data are obtained: Volume of bucket = ¹/2 ft³ Weight of empty bucket = 20.3 lb Weight of bucket filled with dry rodded coarse aggregate: Trial 176.6 lb Trial 275.1 lb Questions and Problems 217 Trial 3 78.8 lb a. Calculate the average dry-rodded unit weight b. If the bulk dry specific gravity of the aggregate is 2.620, calculate the percent voids between aggregate particles for each trial.
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