22. Calculate the compacted cubic yards per hour if a com- pactor with a 5-ft drum width travels at 3 miles per hour over a 10-in. lift of aggregate base course with 4 passes required to meet density specifications under average operating conditions.

(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

According to available data shown in Tables 2, calculate the following: a. Compute the desired Gradation (blend ratios of each fraction) using trial and error method. b. Find Total Gsb, Gse „Pba and Pbe according to asphalt Gb 1.015, Gmm-2.658 and Pb=4.5%. Tabłe 2: Aggregate Gradation Analysis Mid Specifications Limits Sieve Blend A Size (in) Gradation Limits 3/4" 100 100 100 100 1/2" 90 100 100 80-100 3/8" 59 100 100 70-90 No.4 16 96 100 50-70 No.8 3.2 82 100 35-50 No.30. 1.1 51 100 18-29 No.50 36 98 13-23 No.100 21 93 8-16 No.200 9.2 82 4-10 2.785 2.687 2.734 Note: Gse 100 x Gsb Gb GsbxGse Pmm Pb Pmm Gse Gmm Pba %3D %3D Ртт Pb Ps Pb Gmm Gb Gse Gb Pba xPs 100 Pbe = Pb

SITUATION 2: The ground floor of a residential house has an area of 200 square meters. The plan specifies 4 inches thick concrete floor on fill using Class C concrete mix. Determine the following: Use AREA METHOD. MIXTURE CLASS SAND GRAVEL Thick 50 kg. Cement Per Bag B 40 kg. Cement Per Bag in ness cm. cu. m. 5.0 450 375 30 350 300 .250 .0250 .050 7.5 .675 .563 45 525 450 375 .0375 .075 10.0 .900 .750 60 .700 600 .500 .0500 .100 12.5 1.125 .938 .75 875 750 .625 .0630 .125 15.0 1.350 1.125 90 1.050 .900 .750 .0750 .150 17.5 1.575 1.313 1.05 1.225 1.050 .875 .0880 .175 20.0 1.800 1.500 1.20 1.400 1.200 1.000. 1000 200 22.5 2.030 1.688 1.35 1.575 1.350 1.125 1125 .225 25.0 2.250 1.875 1.50 1250. 250 1.750 1.500 1.250 27.5 2.475 2.063 1.65 1.925 1.650 1.375 .1380 275 36.0 2.700 2.250 1.80 2.100 1.800 1.500 .1500 300 Quantity of cement in bags (50kg). Your answer Sand in cubic meters Your answer Gravel in cubic meters Your answer

C. Using the sieve results of a batch of sand and gravel shown in the table below,calculate the fineness modulus for the Sand and Gravel blend if the P sand is 45 % and P Gravel is 55 %. answer the below questions: Amount Amount Sieve No. Retainded (g) Retainded (g) (Sand) (Gravel) 1.5" 22.1 1" 34 0.75" 25.2 161.3 0.5" 52 134 3/8" 109.2 114.4 No. 4 97 19.1 No. 8 46.4 16.1 No. 16 21.2

Please provide a well detailed solution. Thank you

After 2 years of traffic, cores were recovered from the roadway which has severe rutting and bleeding. The bulk specific gravity and the maximum theoretical specific gravity were measured on these cores and are as follows:a. Bulk specific gravity = 2.487b. Maximum theoretical specific gravity = 2.56 1 c. Calculate the air voidsd. If the design air void content was 4%, explain what effect the calculated air voids had on the rutting and bleeding noted.

The specific gravities and weight proportions for aggregate bitumen are as under for the préparation of Marshall Mix design. The volume and weight of one marshall specimen was found to be 475 cc and 1100 gm. Assuming absorption of bitumen in aggregate is zero. Find V Vp₁ VMA and VFB. Item Weight Specific Gravity Aggregate-1 Aggregate-2 Aggregate-3 Aggregate-4 Bitumen 825 1200 325 150 100 2.63 2.51 2.46 2.43 1.05

Using the following data for an unreinforced PCC Pavement slab: ▪ Design Strength f`c = 4000 psi ▪ Slab thickness = 12” ▪ Standard deviation of f`c obtained from 20 samples = 200 psi ▪ Ignore any exposure requirement ▪ Use air entrained concrete ▪ Fineness Modulus of Fine Aggregates = 2.60 ▪ Maximum aggregate Size = 2” and nominal maximum aggregate size 1 ½ “ ▪ Bulk oven-dry specific gravity of Coarse Aggregate = 2.60 ▪ Oven-dry rodded density of coarse aggregate = 125 pcf Find the following: a) Required compressive strength b) Water-Cement Ratio c) Coarse aggregate amount (lb/yd3 ) d) If the w/c ratio is 10% reduced, will the quantity of coarse aggregate increase, decrease or remain the same? Explain your answer.

OAt a ready-mix concrete plant 65 tons of cement, 190 tons of fine aggregate, 250 tons of coarse aggregate and 50 tons of water are available before the end of the day. The plant manager knows that the next day (s)he has to deliver a total of 200 m³ of concrete. In the laboratory, the moisture content of sand and gravel was determined as 1.2 % and 0.2%, respectively and the absorption capacities are 0.8 % for both materials. SSD bulk specific gravities are 2.60 and 2.70 for sand and gravel, respectively. Specific gravity of cement is 3.15. Mix design based on field weight of aggregates: Ingredient Weight (kg/m2-concrete) Field Cement 350 Fine aggregate Coarse aggregate 750 950 Water 195 Calculate the maximum volume of concrete that can be produced with the available materials at the field. What should the plant manager do? [18 pts] 7) The grading of three aggregates is given below. MONSTER