Sieve analysis is a method used to determine the particle size distribution of aggregate materials. This process involves the following steps:
Table 1: Data for sieve analysis on sand
Column 1 | Column 2 | Column 3 | Column 4 |
ASTM Sieve (Sieve size) | Weight retained on each sieve (g) | Percentage weight retained on each sieve (%) | Cumulative Percentage passing each sieve (%) |
⅜ inch (9.5 mm) | 0 | 0 | 98+2 = 100 |
No. 4 (4.75 mm) | 10 | 2 | 88+10 = 98 |
No. 8 (2.36mm) | 50 | 10 | 79+9 = 88 |
No. 16 (1.18 mm) | 45 | 9 | 61+18 = 79 |
No. 30 (600 µ) | 90 | 18 | 29+32 = 61 |
No. 50 (300 µ) | 160 | 32 | 10+19 = 29 |
No. 100 (150 µ) | 95 | 19 | 10 |
Bottom pan | 50 | 10 | |
Total weight of aggregate = 500 g |
Grading curves visually simplifies the distribution of particle sizes and is essential for ensuring that aggregates meet the required grading specifications for construction projects.
From Chapter 5:
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