Sample Lab Aggregates

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ABSTRACT
The objective of these experiments is to determine specific gravity, absorption capacity, and fineness modulus of a f ine aggregate sample and to plot a gradation curve for the sample. The scope of the experiment was limited to one aggregate sample only. In determining the SSD and oven-dry weights needed for calculation of specific gravities, a conical mold was used to reach an SSD condition and the sample was later dried in an oven. Sieve analysis determined the particle size distribution by sifting the aggregate through a series of eight sieves of different sixes by use of a mechanical shaker. The results found are that the aggregate used has a Bulk Specific Gravity (SSD) of 2.552, which indicates a normal weight, and Absorption of 0.12516%. The fineness modulus is 1.92. These results show that the sample aggregate is fine with a u niform gradation that would not be ideal to use as the sole aggregate for a concrete mixture. TABLE OF CONTENTS
1.0 INTRODUCTION

1

2.0 M ATERIALS

1

2.1 Part A - Specific Gravity and Absorption of Aggregate
2.2. Part B - Sieve Analysis

1
1

3.0 E QUIPMENT

1

3.1 Part A - Specific Gravity and Absorption of Aggregate
3.2 Part B - Sieve Analysis

1
2

4.0 PROCEDURE

2

4.1 Part A - Specific Gravity and Absorption of Aggregate
4.2 Part B - Sieve Analysis

2
3

5.0 RESULTS

4

5.1 Part A - Specific Gravity and Absorption of Aggregate
5.2 Part B - Sieve Analysis

4
4

6.0 DISCUSSION

5

6.1 Part A -Specific Gravity and Absorption of Aggregate
5.2 Part B - Sieve Analysis

5
6

7.0 CONCLUSIONS
8.0 R EFERENCES
9.0 APPENDIX
A.
B.
C.

8
8*•
8

Discussion - Part A, #4 Calculations
Discussion - Part A, #5 Calculations
Lab Handout and Raw Data

8
8
8

I A,

\0 INTROD

This laboratory was divided into two parts (A & B). Part A looked at the affect water has on the specific gravity and absorption of the m ixture. Part B used sieves to d etermine

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