me136p experiment 5

Download ME136P Experiment 5

Post on 05-Sep-2015

26 views

Category:

Documents

7 download

Embed Size (px)

DESCRIPTION

Laboratory Experiment

TRANSCRIPT

EXPERIMENT NO. 5SIEVE ANALYSIS OF AGGREGATES

OBJECTIVESTo determine the grade of aggregates through ASTM C136

DISCUSSION OF PRINCIPLESSieve analysis commonly known as the Gradation Test consists of determining the particle size distribution of fine aggregates, coarse aggregates, and mixtures of fine and coarse aggregates. This is accomplished by pouring an aggregate sample through a series of decreasing size sieves and weighing the amount of material retained on each sleeve.The size of an aggregate sieve is designated by the number of meshes to the linear inch in that sieve. The higher the number, the finer the sieve. Any material retained on the No. 4 sieve can be considered either coarse or fine. Aggregates larger than No. 4 are all coarse; those smaller are all fines. No. 4 aggregates are the dividing point. The finest coarse-aggregate sieve is the same No 4 used as the coarsest fine-aggregate sieve. With this exception, a coarse-aggregate sieve is designated by the size of one of its openings. The sieves commonly used are 1 inches, inch, inch, 3/8 inch, and No. 4. Any material that passes through the No. 200 sieve is too fine to be used in making concrete.

PROCEDURES (FINE AND COARSE AGGREGATES)Tick each step if it has been performed

____1.1 Dry the aggregate sample at a temperature of 105 +/- 5 C____1.2 Weigh 1000 grams of aggregate sample.____1.3 Put the sieves in order of decreasing size of opening.Note: Start from the top part.Sieves Nos. 3/8, 4, 8, 16, 30, 50, 100, 200 for fine aggregatesSieves Nos. 4, 3/8, , , 1 1 , 2, 2 , 3, 3 , and 6 for coarse aggregates____1.4 Put the aggregate sample on top of the sieve pan.____1.5 Perform sieving operation using the rotary sieve shaker.Note: Ask for assistance to laboratory personnel.____1.6 Continue the sieving until not more than 1 % by weight of the residue passes any sieve during 1 minute.____1.7 Remove the sieves from the rotary sieve shaker.____1.8 Determine the weight of the residue contained on each sieve.____1.9 Calculate the percentage passing on the basis of the total weight of the sample.____1.10 Calculate and determine the fineness modulus.

Calculations:

Standards Limitations (for fine aggregates)Sieve Percent Passing Specification

Sieve No.Percent Passing by Weight Requirement

3/8 = 0.375100

4 = 0.18795-100

8 = 0.093780-100

16 = 0.046950-85

3025-60

5010-30

1002-10

Note: Table based on ASTM C-136b. Fineness modulus should neighter exceed 3.1 nor less than 2.3Standards Limitations (for coarse aggregates)Note: Table Based on ASTM C-136

b. Value of fineness modulus should remain between 5.5 and 7.5

APPARATUS 1. Set of standard sieves nos. 3/8, 4, 8, 16, 30, 50, 100, 200 for fine aggregates2. Set of standard sieves nos. 4, 3/8, , , 1, 1 , 2, 2 , 3, 3 , and 6 for coarse aggregates3. Sieve pan4. Sieve cover5. Oven with temperature control6. Balance and weights

SET UP OF APPARATUS

1 Aggregates 4 Sieve Pan 2 Pan Lock 5 Column 3 Pan Cover 6 Sieve Shaker

Fig. 5-1 Sieve Analysis

Engineering Materials and Testing Laboratory

Experiment No. 5

Sieve Analysis of Fine and Coarse Aggregates

Preliminary Data Sheet

Name: Festin, Daniel Joshua N.Date: May, 26, 2015

Section: B3Group No.: 2

A.) Fine Aggregates

Original weight:1150 gMoisture content: 15

Over dry weight: 1000 gFineness modulus: 1

Sieve No.Weight retainedWeight passingCumulative retainedCumulative passing% Passing specsRemarks

3/8NoneNone100

411582412.247187.752995-100Fail

8727527.667780.0852

1612662613.418566.666745-80Pass

3024737926.304640.3621

5024213725.772114.5910-30Pass

1001201712.77961.81042-10Fail

2001431.49090.3195

WASH

PAN300.31950

TOTAL939100

Assisted by:Vergel S. RodriguezME-UTM EngineerApproved by:Engr. F. GaleraInstructor

Engineering Materials and Testing Laboratory

Experiment No. 5

Sieve Analysis of Fine and Coarse Aggregates

Preliminary Data Sheet

Name: Festin, Daniel Joshua N.Date: May, 26, 2015

Section: B3Group No.: 2

B.) Coarse Aggregates

Original weight: 1031 gMoisture content: 3.1

Over dry weight: 100000 gFineness modulus: 1

Sieve No.Weight retainedWeight passingCumulative retainedCumulative passing% Passing specsRemarks

3/834864635.010164.9899100Fail

45539355.63389.356195-100Fail

861326.13683.2193

167250.70422.515145-80Fail

302230.20122.3139

503200.30182.012110-30Fail

1005150.5031.50912-10Fail

200

WASH

PAN1501.50910

TOTAL994100

Assisted by:Vergel S. RodriguezME-UTM EngineerApproved by:Engr. F. GaleraInstructor

QUESTIONS1. What are the main purposes of Sieve Analysis of Aggregates? .

2. Discuss Fineness of Modulus..

3. What are the difference between coarse aggregates coming from processing plants and coarse aggregates obtained underwater in rivers?

4. What is Gradiation? .

5. What is Effective Size?.

SAMPLE COMPUTATION (use another sheet of paper; engineering lettering)

DISCUSSION (use another sheet of paper; engineering lettering)

CONCLUSION (use another sheet of paper; engineering lettering)

RECOMMENDATION (use another sheet of paper; engineering lettering)

REFERENCES (use another sheet of paper; engineering lettering)

7 Festin, Daniel Joshua N.

2013103308