Sieve size (mm) 19 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 pan Table 1. Weight retained of different stockpiles Stockpile 2 Stockpile 3 Avg. Wt. Retained Avg. Wt. Retained (gm) (gm) Stockpile 1 Avg. Wt. Retained (gm) 0 17 409 573 0 0 0 0 0 0 0 0 0 0 370 126 1 0 0 0 0 0 0 0 41 46 39 52 45 42 35

Sieve size (mm) 19 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 pan Table 1. Weight retained of different stockpiles Stockpile 2 Stockpile 3 Avg. Wt. Retained Avg. Wt. Retained (gm) (gm) Stockpile 1 Avg. Wt. Retained (gm) 0 17 409 573 0 0 0 0 0 0 0 0 0 0 370 126 1 0 0 0 0 0 0 0 41 46 39 52 45 42 35

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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Coarse aggregate is placed in a rigid bucket and rodded with a tamping rod to determine its unit weight. The following data are obtained: (Note: Write answer with 2 decimal places) Volume of bucket = 1/2 cu.ft Weight of empty bucket = 20.3 Ib Weight of bucket filled with dry rodded coarse aggregate: Trial 1 = 76.6 Ib Trial 2 = 75.1 Ib Trial 3 = 78.8 Ib 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. {Note: Bulk Dry specific gravity must be multiplied to the unit weight of water to obtain percent voids)
express your answers in the nearest three decimal numbers refer to MM = 08 and DD = 26
(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
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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 = 14 LWeight of empty bucket = 9.21 kgWeight of bucket filled with dry rodded coarse aggregate:Trial 1 = 34.75 kgTrial 2 = 34.06 kgMeasureSampleA B CWet Mass (g) 521.0 522.4 523.4Dry Mass (g) 491.6 491.7 492.1Absorption (%) 2.5 2.4 2.3Table P 5 . 9 determine the amount of water required to increase the moisture content of aggregate to reach absorption?5.9 Three samples of fine aggregate have the properties shown in Table Trial 3 = 35.74 kga. Calculate the average dry-rodded unit weightb. If the bulk dry specific gravity of the aggregate is 2.620, calculate thepercent voids between aggregate particles for each trial.
if total sample mass of aggregate is 164.9 grams, then the percent passing from sieve size #30 only is equal to ………………
Quartering (or splitting) means reducing sample sizes into reasonable volumes. Would you expect every after each quartering (or splitting) process, the weight of the original aggregates would be reduced to half or almost half? Why or why not? Defend your reason.
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In order to check the quality of the stockpile of aggregates, 1 sack of aggregates (around 40 kg) was taken from the stockpile and then returned to the laboratory. From a visual inspection of the stockpile, it consists mostly of sand particles mixed with a few gravel aggregates of not more than 1” in size (diameter). After the laboratory test, it was reflected in the report that the stockpile is dominated by gravels. This report contradicts the initial visual inspection that was conducted on the field. Do you think there were discrepancies along the way? If so, where do you think such discrepancy occurred? How do you resolve this contradicting events?
From the given data shown in the table below, determine the effective specific gravity of aggregates. Round off to two decimal places.