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- 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)The mix design for an asphalt concrete mixture requires 2 to 6% minus 0.075 mm. The three aggregates shown in Table P.5.34 are available. TABLE P5.34 Minus 0.075 mm Coarse 0.5% Intermediate 1.5% Fine Aggregate 11.5% Considering that approximately equal amounts of coarse and intermediate aggregate will be used in the mix, what is the percentage of fine aggregate that will give a resulting minus 0.075 mm in the mixture in the middle of the range, about 4%?The mixture maximum specific gravity at 5.0 % asphalt binder content is 2.495. The asphalt specific gravity is 1.030. Compute the aggregate effective specific gravity. Estimate the mixture maximum specific gravity at 6.0 % asphalt binder content.
- Questions 30 is based on the information below: An asphalt concrete mix design has the following properties. The densities of the binder and aggregate are 1.090 g/cm³ and 2.760 g/cm³, respectively. The bulk density of the entire mix is 2.220 g/cm³. The percent binder content is 6.2% (by weight). Assume no absorption. V₁= 1.0 cm³ Volume Vv Vb Vs AIR Binder Aggregate Mass Mb Ms Mt 30. As an engineer, you are asked to use this mix design for a 25 kilometer-long section of roadway where the total pavement width is 8.0 meters and the thickness is 15 centimeters. What is the (a) total volume of binder and (b) the total volume of aggregate that you would need to purchase? Also, determine the (c) total %air voids in the mix.Kindly give me all right answers with short explanation. Please don't miss anything. Modulus of resilience and toughness are approximately equal for linear perfectly plastic materials. True False The phase diagram of asphalt mixture consists of permeable void, impermeable void and aggregate solid. True False There are different types of Portland cement, for large, massive pours to control heat of hydration, the cement type for low heat. True False Slump test is used to measure the moist susceptibility of Portland cement concrete. True False For a given slump, increasing aggregate size can reduce water content that is needed. True FalseGiven the specifications for an asphaltic concrete mixture and the results of a sieve analysis, determine the proportion of different aggregates to obtain the required gradation. Coarse aggregates: 60% Fine aggregates: 35% Filler: 5%
- Given four different types of aggregates to be used to produce a blended aggregate for use in the manufacture of asphaltic concrete, determine the bulk specific gravity of the aggregate mix.Wi 100 Q1/ If the weight of Cement is 3000 g and the mix proportion is 1:4:8 Calculate the following: W/C=0.35 1050mL W/C = 0.57 1710mL 1218 kg 24 148 1) The amount of water for 2) The amount of water for 3) Find the weight of fine aggregate = 4) Find the weight of coarse aggregate = kgThe maximum theoretical specific gravity of an asphalt concrete is 2.550. Other components are specified as follows: Gmm =a.5s o Apparent Specific Gravity Gma Material Specific Gravity G % by Weight Asphalt cement Limestone dust 6.3 13.7 30.4 1.020 2.820 2.650 2.650 2.650 2.905 Sand Course aggregates 2.873 49.6 9. What is the bulk specific gravity of the aggregates? a) 2.73 b) 2.67 c) 2.69 d) 2.75 Gs b 10. What is the air void content if the bulk specific gravity is of the mixture is 2.340? a) 8.0% b) 8.5% c) 8.6% d) 8.2% 11. What is the effective specific gravity of the aggregates? а) 2.836 b) 2.816 c) 2.826 d) 2.866 12. What is the asphalt absorption? a) 1.90% b) 2.18/% c) 2.23% d) 2.13%
- 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"8) For the following cements, answer the following questions: Cement A Cement B C3S (%) C2S (%) СЗА (%) Alkalis (%) SO3 (%) СаСОз(%) Blaine fineness (m²/kg) Loss on ignition (%) Insoluble residue (%) *Other aspects of the cements are comparable to each other. 50 20 60 15 10 1 2.5 1 2.5 1 5 350 300 0.01 0.75 3 0.1 d) Which cement has higher sulfate resistance? Briefly explain. e) Which cement is stored improperly? Briefly explain f) During the production of which cement, the kiln reactions were almost complete? Briefly explainA concrete mix has a ratio os 1:2:4 by mass. The properties of the materials to be used are tabulated below. MATERIALS. SPECIFIC GRAVITY CEMENT 3.33 SAND 2.65 GRAVEL 2.67 Cement weighs 40 kg per bag. Use 24 liters of water per bag of cement Compute the volume of cement solids per bag of cement in cu m. Compute for the required volume of sand solids per bag of cement. Compute for the volume of concrete that can be produced per bag of cement 0.1 Need answer until 8 pm. Guaranteed like for a detailed complete solution.