In the Marshall method of mix design, the filler, bitumen, coarse aggregates and fine aggregates having respective specific gravities of 2.69, 2.1, 2.42 and 2.70 are mixed in the ratio of 7.6 %, 4.5 %, W% and 4.5 %, respectively. The theoretical specific gravity of the mix is 2.5 then value of W is____

In the Marshall method of mix design, the filler, bitumen, coarse aggregates and fine aggregates having respective specific gravities of 2.69, 2.1, 2.42 and 2.70 are mixed in the ratio of 7.6 %, 4.5 %, W% and 4.5 %, respectively. The theoretical specific gravity of the mix is 2.5 then value of W is____

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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2) Sieve analysis results of a fine and a coarse aggregate are given in the tables below. For the determination of their specific gravities and water absorption capacities, the relevant measurement results of tests are also given in the tables. Draw the gradation curves of the fine and coarse aggregate separately. Calculate the fineness modulus of fine aggregate. Calculate the specific gravity and water absorption capacity of fine and coarse aggregate for oven-dry (OD) and saturate-surface dry (SSD) conditions. Sieve analysis results for COARSE AGGREGATE: Sieve Opening Weight Retained, (mm) 25.0 19.0 400 12.5 1400 9.50 2160 1/2 Sieve analysis results for FINE AGGREGATE: Sieve Opening (mm) Weight Retained, 4.75 2.00 950 0.85 2000 0.425 1010 0.25 670 Pan 143
N=2
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
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VFB=??
Sieve analysis for fine and coarse aggregate is done, how can we say that those samples are good and how can we say that fine and coarse aggregate by computing the fineness modulus?
In a bituminous mix, bitumen content is 7% by weight of mix and specific gravity of bitumen is 1.01. If the bulk specific gravity of mix is 2.48, then the specific gravity of combined aggregate is (Take percentage air voids as 3.87%).
(Given are the sieve size and amount Retained.) Show complete solution Sieve analysis test for fine aggregates was performed on a sample of fine aggregates and produced the following results: a. Calculate the percent passing through each sieve. b. Plot the percent finer in a semi-log gradation chart. c. What is the maximum aggregate size of the sample? d. What is the nominal maximum aggregate size of the sample? e. What is the fineness modulus? Is it in typical range?
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