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

(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

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.

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.