The weight of a dry aggregate sample is 1300 gms, and it is desired to prepare a specimen of asphalt concrete mold with a percent asphalt by total weight of 5.5 The weight of asphalt in gms required in this case is about
Q: The first layer 2m thick very fine wet sand with silt having water content of 8% and S=45% lying in ...
A:
Q: What is the nominal maximum load capacity of grade 60 reinforcing bar with a diamter of 20mm? Ch...
A:
Q: How to design Building Water Supply systems? a. Cold Water System b. Hot Water System How t...
A: Explanation- Sewer System Design The sewer system is critical to a country's economic success. Sewer...
Q: Question: Draw the views given in Figure 15.47, complete the line of intersection between the object...
A:
Q: Compare the size of a CMFR and a PFR to achieve 50 percent removal of a contaminant, given a flow ra...
A: We have to determine the relative efficiency of each type of reactor and the situation where each ty...
Q: 15 kN 10 kN 6 kN D E 0.4 kN/m 4 m 7 m 6 m 8 m
A:
Q: Two straights intersect at a chainage of 2053 m and the angle of deflection is 80°. If radius of sim...
A:
Q: A sample soil is obtained and sieve analysis is performed to determined its particle distribution. S...
A:
Q: Example: The purchase price of a natural gas-fired commercial boiler (capacity X) was $181,000 eight...
A: From the Given Data let, Cost of Boilers = B1 and B2 and factor given = 0.8
Q: The required structural number over the base SN, is equal to 3.2 and the layer coefficient for an as...
A:
Q: What's the importance of determining the soundness of cement to civil/structural engineers in the fi...
A: The soundness of Cement : 1. The soundness of cement can be defined as its ability to retain its vol...
Q: Which of the following diameter of Grade 60 reinforcing bar can withstand a tensile load of 210 000 ...
A:
Q: The degree of static internal indeterminacy of the given pin jointed frame is .
A: Given data,
Q: noving at 15 m/s. alculate is momentum.
A: Given data - Mass(m) = 600kg Velocity (v) = 15m/s
Q: Using Area moment method: A simply supported beam with length I is loaded with a uniformly distribut...
A:
Q: A trial concrete mix is to be prepared for a garage floor which is subjected to freezing. and deicin...
A: Solution: Concrete Mix Design: The required strength = 32 MPa Standard Deviation = 1.5 Coarse Aggreg...
Q: A wood beam AB on simple supports with spanlength equal to 10 ft is subjected to a uniform load ofin...
A: Given:- Wooden beam AB To find:- a)lightest beam b)verify selected beam is satisfactory
Q: What's the importance of determining the soundness of cement to civil/structural engineers in the fi...
A: Soundness test is performed to determine the volumetric expansion of cement paste. It is determined ...
Q: Quickly find support reaction
A: Given data : The value of Point load P=4 KN The value of uniformly distributed load q=2 KN/m To fi...
Q: Oueston- Calulote min sD auinad to ovoiolo heod on Collision Of fwo Cars oPoching from the opposite ...
A: Given-V=90 kmph and 60 kmphReaction time t=2.5sCoefficient of friction, f=0.7Brake efficiency, n=50%...
Q: Instructions: Solve the following problems completely using Method of Consistent Deformation. 25 kip...
A:
Q: b 2 m 3 m V 12 kN 4@4 m = 16 m %3D
A:
Q: Consider particles in suspension and their settling behaviour at different concentrations select the...
A: Plain sedimentation removes suspended coarser particles which tend to settle down under gravity when...
Q: In its natural conditioh, a soil sample has a mass of 2270 g and a volume of 1.15x10-3m3. After bein...
A:
Q: Apply this to the special case b;=3 m, b2=2 m, and y,=1.9 m. a) Find the flow rate if y2=1.5 m. b) A...
A: Given - To Find - a - find flowrate if y2 = 1.5mb- Find the depth y2
Q: The DDHV for a given highway project is 2200 veh/h and the design capacity is 1450 veh/h/In The calc...
A:
Q: 2- (Final) For the beam shown in the figure (L= 4m. w, 90kN/m, and El = 6000KN.m). If the deflection...
A:
Q: A clay has the following Atterberg Limits: LL 24% %3D PL 13% SL 4% The clay shrinks from 10.65 cm^3 ...
A: To determine: plasticity index specific gravity of clay solids shrinkage ratio Given, Liquid Lim...
Q: 3) The contaminant concentration has been detected to be 200 mg/L for the area of a site represented...
A: Given: Contaminant concentration = 200 mg/L = 200 * 10-6 kg/L Average Aquifer thickness = 5 m Hydrau...
Q: The three parts of this problem refer to the floor plan shown in the figure. Assume that the entire ...
A:
Q: The shear-force diagram for a simple beamis shown in the figure.Determine the loading on the beam an...
A: Given data:
Q: etermine the elevation, pressure, and total hydral Is at all points, a through g using a Tit
A:
Q: 5. Moment distribution method 15 kN/m B C
A: Given data:
Q: A trial concrete mix is to be prepared for a garage floor which is subjected to freezing. and deicin...
A:
Q: What is the nominal maximum load capacity of a Grade 60 Reinforcing Bar with a diameter of 20mm? o 1...
A:
Q: What is the required volume of Fine Aggregates(s.g. = 2.4) if the mass needed for the concrete mix i...
A: Given S.g of fine aggregate = 2.4 Mass of fine aggregate = 850 kg
Q: The channel section shown in the figure below has the shape factor of 90 mm 7.6 mm 13.6 mm
A:
Q: A simple beam with an overhang supports a uniform load of intensity q =1200 lb/ft and a concentrated...
A: Given:- q=1200lb/ft The allowable stresses in bending and shear are 18 ksi and 11 ksi To find:- sele...
Q: Problem 15.16 Determine stirrup spacing at distance d from support for the beam shown if the load is...
A:
Q: Problem 15.15 Determine the required spacing of #13 closed O stirrups at a distance d from the face ...
A: INTRODUCTION: This question deals with torsion as well as moment due to total load i.e dead and live...
Q: A square footing is 1.8 x 1.8 m² with a 0.4 x 0.4 m? square column. It is loaded WILH AA zria! Joad ...
A:
Q: 1.2m 1.2m
A: Dead load on purlin , =800×1.2=0.96 kN/m Live load on purlin, =1000×1.2=1.2 kN/m Now calculate the i...
Q: A rigid cantilever frame ABC is fixed at A and carries a couple M at the free end Cas shown in the g...
A: Given arrangement
Q: drograph sepa Time Flow (hr) (cfs) Separation by Recession Curve Approach 1 30 29.4 Homework// 3 66 ...
A: Baseflow is not directly generated from the excess rainfall during a storm event, this is the flow t...
Q: Having a Concrete Mix Ratio of 1:1.5:2.5 (by mass), what is the mass of Sand needed to create a 50kg...
A: Asked: To calculate the mass of sand to form 50 kg of concrete. Given, Concrete Mix Ratio (Cement ...
Q: A 2D truss is supported at A and Band carriers point loads of 1 kN and 2 kN at G and H respectively ...
A:
Q: A constant 7.8-N force pushes a small ball in the direction of the force over a distance of 3.8 m
A:
Q: Compute for the corrected amount of water needed in the concrete mix if the mass of fine and coarse ...
A:
Q: The piping system shown in the figure below must be able to carry a large transverse load P applied ...
A: We will solve this question in step no. 2
Q: Knowing that w is 170 Ib/ft, determine the internal moment in the beam at point C using the sign con...
A:
Step by step
Solved in 2 steps with 1 images
- An aggregate blend for an asphalt concrete mixture has the following composition by weight: Coarse aggregate Fine aggregate 65% Specific (bulk) gravity of coarse agg. 35% Specific (bulk) gravity of fine agg. = 2.70 = 2.65 This aggregate blend was mixed with asphalt cement (G, =1.03) at an asphalt content of 5.5% by weight of mixture (ignore absorbed asphalt). A volumetric analysis was conducted and it was determined that the %VMA for the mix was 15.5%. Determine Gmb Of the mixture.In a Marshall test, the percentage of asphalt binder by total weight of aggregate is 5.0%. The bulk specifc gravity of aggregate (G3)=2.624, the specifc gravity of asphalt binder (G)=1.000, and the density of water (Y)=1.000 g/cm³. If the absorbed asphalt (Pa) is 2.00% by total weight of aggregate, and the voids in total mixture (VTM) is 4.0%, determine the following properties: a. The effective asphalt content (Pbe) b. The bulk specifc gravity of the compacted mixture (Gmb) c. The voids in mineral aggregate (VMA) d. The theoretical maximum specifc gravity of the loose mixture (Gmm) e. The voids flled with asphalt (VFA) f. The effective specifc gravity of aggregate solids (G)An asphalt concrete specimen has the following properties:asphalt content = 5.9% by total weight of mix bulk specific gravity of the mix = 2.457 theoretical maximum specific gravity = 2.598 bulk specific gravity of aggregate = 2.692Calculate the percents VTM, VMA, and VFA.
- An asphalt concrete specimen has the following properties: • Asphalt content = 5.5% by total %3D weight of mix • Bulk specific gravity of the mix = 2.475 • Theoretical maximum specific of gravity = 2.563 • Bulk specific gravity aggregate = %3D 2.689 Ignoring absorption, compute the percent VFA Select one: A. 67.2% B. 68.1% C. 76.3% D. 73.8%An aggregate blend is composed of 65% coarse aggregate by weight (SG 2.65), 30% fine aggregate (SG 2.70), and 5% filler (SG 2.75). The compacted specimen contains 6% asphalt binder (SG 105) by weight of total mix, and has a bulk densit of 2.255 Mg/m&3. Ignoring absorption.a. What is the percent voids fill with asphalt?b. What is the percent voids in mineral aggregates?c. What is the percent voids in total mix?Q4) Determine the PG grade of the asphalt whose results are shown in the table below? Show all calculations and comparisons with Superpave requirements. Test Results Original Properties Flash point temperature, °C 278 Viscosity @ 135 °C 0.490 Pa.s Dynamic shear Rheometer @ 82 °C @ 76 °C G* = 0.82 kPa, 8 = 68° G* = 1.00 kPa, 8 = 64° @ 70 °C G* = 1.80 kPa, 8 = 60° Rolling Thin Film Oven Aged Binder Mass loss, % 0.63 Dynamic shear Rheometer @ 82 °C @ 76 °C G* = 1.60 kPa, 8 = 65° G* = 2.20 kPa, ô = 62° @ 70 °C G* = 3.50 kPa, 8 = 58° Rolling Thin Film Oven and PAV Aged Binder Dynamic shear Rheometer @ 34 °C @ 31 °C @ 28 °C G* = 2500 kPa, 8 = 60° G* = 3700 kPa, 8 = 58° G* = 4850 kPa, 8 = 56° Bending Beam Rheometer @ -6 °C, 60-sec @ -12 °C, 60-sec @ -18 °C, 60-sec S = 255 MPa, m = 0.329 S = 290 MPa, m = 0.305 S = 318 MPa, m = 0.277
- An asphalt concrete specimen has the following properties:Asphalt content = 5.5% by total weight of mixBulk specific gravity of the mix = 2.475Theoretical maximum specific gravity = 2.563Bulk specific gravity of aggregate = 2.689 Ignoring absorption, calculate the percents VTM, VMA, and VFA.Q1 (c) In a Marshall test, the percentage of asphalt binder by total weight of aggregate is 5.26%. The bulk specific gravity of aggregate (Gsb) = 2.455, the specific gravity of asphalt binder (Gb) = 1.020, and the density of water (yw) = 1.000 g/cm^3. If 1 m^3 of an asphalt concrete mixture will be produce that having 2000 g and the asphalt absorbed into the aggregate is 24 gram : (i) Calculate asphalt content, effective asphalt content and asphalt absorption. (ii) Calculate void in mineral aggregate and void filled with asphalt.Q2) The following results were obtained from testing a certain asphalt binder: RTFO aged PAV Original Asphalt aged asphalt asphalt DSR G° (kPa) 8 (C) 0.98 2.1 6000 75 70 60 BBR S@ 60-sec (MPa) | 300 M@ 60-sec 450 650 0.6 0.5 0.4 DTT Failure Strain (%) 2.5 % 2 % 1.2% Determine if the asphalt meets the Superpave specification requirements to resist the following distresses: (a) Rutting (b) Fatigue cracking (c) Low temperature cracking
- As part of mix design, a laboratory-compacted cylindrical asphalt specimen is weighed for determination of bulk-specific gravity. The following numbers are obtained:Dry mass in air = 1264.7 gramsMass when submerged in water = 723.9 gMass of saturated surface dry (SSD) = 1271.9 ga. What is the bulk-specific gravity of the compacted specimen (Gmb)?b. If the maximum theoretical specific gravity of the specimen (Gmm) is 2.531, what would be the air void content of the specimen in percent?As part of mix design, a laboratory-compacted cylindrical asphalt specimenis weighed for determination of bulk-specific gravity. The following numbersare obtained:Dry mass in air = 1264.7 gramsMass when submerged in water = 723.9 gMass of saturated surface dry (SSD) = 1271.9 ga. What is the bulk-specific gravity of the compacted specimen (Gmb)?b. If the maximum theoretical specific gravity of the specimen (Gmm) is2.531, what would be the air void content of the specimen in percent?Use the following volumetric relationships for asphalt mix analysis: VTM = 100 (1 - Gmb) VFA = 100 3. An asphalt concrete specimen has the following properties: Asphalt content = 5.5 % by total weigh of mix Bulk specific gravity of the mix = 2.475 Theoretical maximum specific gravity = 2.563 Bulk specific gravity of aggregate = 2.689 Assuming there is no absorption of binder, calculate the following: (a) Percent Voids in Total Mix (b) Percent Voids in Mineral Aggregate: VMA – VTM VMA (c) Percent Voids filled with asphalt: VMA = = (100 - Gmb Ps Gsb