Calculate the unit cost for a virgin mixture and a mixture containing recycled material (RAP)? What is the percent savings of the RAP mixture? Virgin Mixture . . . . Total Mix Cost = ? RAP Mixture . . . . Aggregate: $15/ton Asphalt Binder: $544/ton Mix Design AC Content: 5.5% . Mix Design: . Aggregate: $15/ton Asphalt: $544/ton RAP: $6/ton ( 5% AC in RAP) Total RAP Mix Cost = ? AC Content 5.5% RAP content 20 % ( 19 % rock, 1% AC)

Calculate the unit cost for a virgin mixture and a mixture containing recycled material (RAP)? What is the percent savings of the RAP mixture? Virgin Mixture . . . . Total Mix Cost = ? RAP Mixture . . . . Aggregate: $15/ton Asphalt Binder: $544/ton Mix Design AC Content: 5.5% . Mix Design: . Aggregate: $15/ton Asphalt: $544/ton RAP: $6/ton ( 5% AC in RAP) Total RAP Mix Cost = ? AC Content 5.5% RAP content 20 % ( 19 % rock, 1% AC)

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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PV laundry facility uses 1 m/min and wants to design an exchange process to remove hardness from the water. The municipal water that they use contains 80 mg/L of calcium and 36.6 mg/L of Magnesium. Total hardness should be reduced to 80 mg/L of CaCO3. The resin has a Total Hardness (TH) capacity of 60 kg TH/m³ of resin, and the recommended hydraulic loading rate is 0.5 m³/m².min. a) What is the water flow rate (m³/d) that needs to be treated? b) What is the total daily resin volume (m³) required to soften the water? c) What is the area of the exchanger needed?
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
Highways Engineering Example2: Determine percentages air voids and voids filled with binder to obtain a unit weight value for the mix of 2.349 g/cm3, given that: % of coarse aggregate 54%, Gc=2.64 % of fine aggregate = 40%, Gf=2.66 % of mineral filler = 6%, Gmf=2.85 % of biner content by the total weight of the mix= 5.3%, Gb=1.02
Determined and fil-up the unknown data of the given table. Physical Properties Mix Design Specific Dry-rodded Materials Fineness Estimated Absolute gravity weight ft3 Absorption modulus Ib/yd3 Ib/yd3 (SSD) Ib/ft3 Cement 3.15 ? ? Sand 2.64 0.7 2.72 11/2 62.4 Ib/ft Gravel 2.67 0.5 100.5 Water ? Vol. of entrapped air w/C = ? GIVEN: Specification Requirements compressive strength, psi 4000 Slump, in. 3 4
For preparing PCC, would you prefer round and smooth aggregate or rough and angular aggregate? Briefly explain why (no more than two lines). b. For preparing HMA, would you prefer round and smooth aggregate or rough and angular aggregate? Briefly explain why (no more than two lines).
AMoving to another question will save this response. Question 23 What are the sequence of steps for Superpave Mix Design? O Aggregate Selection, Design aggregate structure, Binder Selection, Design binder content, Moisture susceptibility evaluation Binder Selection, Aggregate Selection, Design aggregate structure, Design binder content, Moisture susceptibility evaluation O Aggregate Selection, Binder Selection, Design aggregate structure, Design binder content, Moisture susceptibility evaluation O Aggregate Selection, Binder Selection, Design binder content,Design aggregate structure, Moisture susceptibility evaluation Final ASSIGNMEN....doc W Outline Template..docx A amazon P Type here to search 1080
Aggregates from two sources having bulk specific gravities of 2.753 and 2.649 were blended at a ratio of 70:30 by weight respectively. What is the bulk specific gravity of the aggregate blend? a) 2.155 2.689 c) 2.721 d) 2.356
Laboratory specific gravity and absorption tests are run on two coarse aggre- gate sizes, which have to be blended. The results are as follows: Aggregate A: Bulk specific gravity = 2.491; absorption = 0.8% Aggregate B: Bulk specific gravity = 2.773; absorption = 4.6% a. What is the specific gravity of a mixture of 60% aggregate A and 40% aggregate B by weight? b. What is the absorption of the mixture? TABLE P5.32 Aggregate A D Blend Blend 20% 15% 25% 40% Sieve Size, mm Percent Passing 37.5 100 100 100 100 25 100 100 100 100 19 95 100 100 100 12.5 89 100 100 100 9.5 50 85 100 100 4.75 10 55 100 100 2.36 2 15 88 98 1.18 2. 5 55 45 0.6 2 3 35 34 0.3 2 2 22 25 0.15 2 15 14 0.075 2 1 6 5
2.9.2 Given are sieve analysis results for materials to be blended for AC 14 mix along with the required grading. i. Find the correct proportion for each aggregate stockpile to meet the required grading for the proposed AC 14 mix. Calculate the specific gravity of the blended aggregates. ii. Material Percent Passing, % BS Sieve 20.0 mm 14.0 mm 10.0 mm 5.0 mm 3.35 mm 1.18 mm 425 um 150 um 75 um 100 90 80 70 60 50 40 30 20 10 0 0.01 AC 14 100 90 - 100 76-86 50 - 62 40-54 18-34 12-24 6-14 4-8 0.10 Stockpile A SG = 2.565 100 92.6 48.8 22.9 2.9 1.7 0 0 0 Stockpile B SG = 2.654 % passing 100 100 98.2 45.4 30.4 12 6.7 2.3 0 1.00 Sieve Size, mm Stockpile C SG = 2.714 100 100 100 93.4 76.8 51.2 29.4 13.7 4.5 10.00 Stockpile D SG = 3.200 100 100 100 100 100 100 100 98.4 88.9 100.00
Given the data in Table P9.33, select the blend and the design binder contentfor a Superpave design aggregate structure for a 5 million ESAL and a 19 mmnominal maximum aggregate size.
Please
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 explain