Sieve Analysis of Sand: Procedure, Types, Calculation & Complete FAQ
A complete, exam-ready and site-ready reference on sieve analysis of sand — what it is, why it is done, its types, the step-by-step procedure, fineness modulus calculation, grading zones, advantages, disadvantages, safety and frequently asked questions.
Live illustration — how a sieve stack separates sand by size
Coarser particles are retained on upper sieves; finer particles pass down to the sieves below and the pan.
01 / DefinitionWhat Is Sieve Analysis of Sand?
Sieve analysis of sand, also called a gradation test or grain size analysis, is a laboratory procedure used to determine the particle size distribution of a sand sample. A weighed, oven-dried sample is passed through a nested stack of sieves with progressively smaller mesh openings. After mechanical or manual shaking, the sand retained on each sieve is weighed, and the results are used to calculate the percentage retained, cumulative percentage retained, percentage passing, and the overall fineness modulus of the sand.
02 / PurposeWhy Is Sieve Analysis of Sand Done?
Sieve analysis is one of the most routinely performed tests in a materials testing laboratory because the grading of sand controls the performance of almost everything it goes into. Key reasons engineers run this test include:
Concrete mix design
Grading affects workability, cement and water demand, and the density of the final concrete.Quality control
Confirms that supplied sand meets project specification and IS 383 / ASTM C33 grading limits before acceptance.Strength & durability
Well-graded sand reduces voids, improves packing density and increases concrete strength and durability.Filter & drainage design
Grading determines permeability and suitability of sand as a filter medium in wells, drains and geotechnical filters.Classification
Provides data to classify soil/sand under systems such as the Unified Soil Classification System (USCS).Cost & consistency
Prevents rejection of concrete batches and reduces material wastage by catching poorly graded sand early.03 / TypesTypes of Sieve Analysis of Sand
There are two principal types of sieve analysis used for sand, chosen based on how much silt, clay or fine dust is present in the sample.
| Aspect | Dry Sieve Analysis | Wet Sieve Analysis |
|---|---|---|
| Method | Oven-dried sample sieved directly | Sample washed over a 75 µm sieve before drying & sieving |
| Best suited for | Clean sand with negligible fines | Sand containing silt, clay or dust coatings |
| Accuracy for fines | Lower — fine particles can clump | Higher — clumped fines are broken up by washing |
| Time required | Faster (~30 min) | Slower (drying after washing adds time) |
| Governing clause | IS 2386 (Part I), Section 1 | IS 2386 (Part I), Section 2 |
A third, less common variant is mechanical sieve analysis (using a motorized sieve shaker) versus manual sieve analysis (hand shaking) — this distinguishes the shaking method rather than the sample treatment.
04 / CodesStandards & Codes for Sieve Analysis
| Standard | Region | Scope |
|---|---|---|
| IS 2386 (Part I): 1963 | India | Test method for particle size and shape |
| IS 383: 2016 | India | Grading zone limits for coarse & fine aggregate |
| ASTM C136 / C136M | USA / International | Standard test method for sieve analysis of aggregates |
| ASTM C33 / C33M | USA / International | Grading requirements for concrete aggregates |
| BS 812-103.1 | UK | Sieve tests for aggregates |
| ASTM D6913 | USA | Particle size analysis of soils using sieve |
Always check the latest edition of the governing code before using these limits for design or contractual acceptance — code editions are periodically revised.
05 / ApparatusApparatus, Equipment & Sieve Sizes Required
Sieve set
Nested IS or ASTM sieves with lid and panSieve shaker
Mechanical shaker (or hand shaking)Weighing balance
Accuracy of 0.1 g or betterOven
Thermostatically controlled, 105–110°CSample splitter
Riffle box or quartering toolsTrays & brush
For handling and cleaning sieves| IS Sieve | Aperture | Nearest ASTM sieve |
|---|---|---|
| 10 mm | 10.00 mm | 3/8 in. |
| 4.75 mm | 4.75 mm | No. 4 |
| 2.36 mm | 2.36 mm | No. 8 |
| 1.18 mm | 1.18 mm | No. 16 |
| 600 micron | 0.600 mm | No. 30 |
| 300 micron | 0.300 mm | No. 50 |
| 150 micron | 0.150 mm | No. 100 |
| Pan | < 0.150 mm | Pan |
06 / PreparationSample Preparation
- Collect a representative sample from the stockpile using proper sampling technique (avoid taking sand only from the surface).
- Oven-dry the sample at 105–110°C until a constant weight is achieved, then allow it to cool.
- Reduce the sample to test size using quartering or a riffle box splitter to avoid bias.
- Use a minimum sample mass of about 500 g for fine aggregate (many labs use up to 1000 g for improved precision), as guided by IS 2386 (Part I).
- Record the exact initial weight (W) of the dried sample before sieving — this is essential for all later calculations.
07 / ProcedureHow to Do Sieve Analysis of Sand — Step-by-Step
Arrange the sieves
Stack sieves in descending order of aperture size (largest on top, pan at the bottom) and fit the lid.Load the sample
Pour the weighed, dried sand sample into the top sieve and close the lid.Shake the stack
Place the stack on a mechanical sieve shaker and shake for about 10 minutes, or shake manually with a combined rotary and lateral motion.Check completeness
Sieving is considered complete when less than about 1% of the material on any sieve passes through in one additional minute of shaking.Weigh each fraction
Carefully remove each sieve and weigh the sand retained on it, along with the material collected in the pan.Record observations
Tabulate the weight retained on every sieve against its aperture size.Compute results
Calculate percentage retained, cumulative percentage retained, percentage passing and the fineness modulus.Plot the grading curve
Plot cumulative percentage passing (y-axis) against sieve size on a semi-log scale (x-axis) to visualize the particle size distribution.
08 / CalculationObservation, Calculation & Fineness Modulus
For each sieve, three quantities are calculated:
% Retained
(Weight retained ÷ Total weight) × 100Cumulative % Retained
Sum of % retained on that sieve and all coarser sieves% Passing
100 − Cumulative % Retained| IS Sieve | Wt. Retained (g) | % Retained | Cumulative % Retained | % Passing |
|---|---|---|---|---|
| 4.75 mm | 20 | 2.0 | 2.0 | 98.0 |
| 2.36 mm | 80 | 8.0 | 10.0 | 90.0 |
| 1.18 mm | 180 | 18.0 | 28.0 | 72.0 |
| 600 µ | 260 | 26.0 | 54.0 | 46.0 |
| 300 µ | 280 | 28.0 | 82.0 | 18.0 |
| 150 µ | 140 | 14.0 | 96.0 | 4.0 |
| Pan | 40 | 4.0 | — | — |
Fineness modulus (FM) is calculated by summing the cumulative percentage retained on the standard set of sieves (150 µ, 300 µ, 600 µ, 1.18 mm, 2.36 mm, 4.75 mm, 10 mm, …) and dividing by 100:
FM = (2.0 + 10.0 + 28.0 + 54.0 + 82.0 + 96.0) / 100 = 2.72
Fineness modulus position on the scale
Scale reference: 2.2 (fine) → 3.2 (coarse). A value of 2.72 indicates medium sand, generally well suited to structural concrete.
| Fineness Modulus | Sand Category |
|---|---|
| 2.2 – 2.6 | Fine sand |
| 2.6 – 2.9 | Medium sand |
| 2.9 – 3.2 | Coarse sand |
09 / CurveParticle Size (Grading) Distribution Curve
The grading curve plots cumulative percentage passing against sieve aperture on a semi-log scale. Its shape reveals whether sand is well-graded (smooth, gentle slope across sizes) or uniformly / poorly graded (steep, narrow slope). Two derived parameters describe the curve numerically: the uniformity coefficient (Cu = D60/D10) and the coefficient of curvature (Cc = D30²/(D10×D60)), where D10, D30 and D60 are the particle sizes corresponding to 10%, 30% and 60% passing.
Cumulative percentage passing vs. sieve size (semi-log) — a smooth, well-spread curve indicates well-graded sand.
10 / ZonesGrading Zones of Sand (IS 383)
IS 383 classifies fine aggregate into four grading zones, from Zone I (coarsest) to Zone IV (finest), based on the percentage passing each sieve.
| IS Sieve | Zone I | Zone II | Zone III | Zone IV |
|---|---|---|---|---|
| 10 mm | 100 | 100 | 100 | 100 |
| 4.75 mm | 90–100 | 90–100 | 90–100 | 95–100 |
| 2.36 mm | 60–95 | 75–100 | 85–100 | 95–100 |
| 1.18 mm | 30–70 | 55–90 | 75–100 | 90–100 |
| 600 µ | 15–34 | 35–59 | 60–79 | 80–100 |
| 300 µ | 5–20 | 8–30 | 12–40 | 15–50 |
| 150 µ | 0–10 | 0–10 | 0–10 | 0–15 |
11 / ProsAdvantages of Sieve Analysis of Sand
Simple & low cost
Requires basic apparatus and no complex sample preparation chemicals.Fast results
A complete test can be finished within about 30–45 minutes.Widely standardized
Backed by internationally recognized codes (IS, ASTM, BS), enabling easy comparison.Directly usable data
Results feed straight into concrete mix design and material acceptance decisions.Site-friendly
Can be performed in a basic site laboratory without power in the manual variant.Repeatable
Highly reproducible when standard procedure and calibrated sieves are used.12 / ConsDisadvantages & Limitations of Sieve Analysis
Poor for very fine particles
Cannot accurately size particles finer than about 75 microns (needs hydrometer analysis).Sieve wear affects accuracy
Worn, torn or clogged mesh distorts results over repeated use.Doesn’t measure particle shape
Elongated or flaky grains may pass through openings smaller than their true dimension.Moisture sensitivity
Damp sand causes clumping and inaccurate retention on sieves unless properly dried.Operator dependent (manual)
Hand-shaken tests can vary between technicians in duration and intensity.Sample size sensitivity
Too small a sample can skew percentages; too large a sample can overload fine sieves.13 / UsesUses & Applications of Sieve Analysis of Sand
- Concrete and mortar mix design — selecting the right sand grading for target workability and strength.
- Quality control at batching plants — routine acceptance testing of incoming sand.
- Filter and drainage layer design in wells, French drains and geotechnical filters.
- Road and pavement construction — checking fine aggregate grading for sub-base and asphalt mixes.
- Soil classification in geotechnical investigations (USCS / AASHTO systems).
- Manufactured (M-sand) quality checks against natural river sand grading benchmarks.
14 / SafetyIs Sieve Analysis of Sand Safe?
Yes — sieve analysis is a safe, dry mechanical test with no chemical reagents involved, provided normal laboratory precautions are followed. The main hazards are minor and easily managed:
The main long-term risk is inhaling airborne fine silica dust during handling of dry, fine fractions; this is managed with dust masks, working in a ventilated area, and using a fume/dust hood where available. Burns from freshly oven-dried samples and pinch injuries from sieve-shaker clamps are the other minor risks to guard against.
15 / PrecautionsCommon Errors & Precautions During the Test
- Not drying the sample fully, causing fine particles to clump and give a false coarse reading.
- Overloading the top sieve, which prevents particles from reaching the correct opening.
- Using damaged, torn or clogged sieve mesh without recalibration.
- Shaking for too short a time, so fines remain trapped on coarser sieves.
- Not cleaning sieves thoroughly between tests, contaminating the next sample.
- Recording weights incorrectly or skipping a sieve fraction in the tally, which breaks the mass balance check.
16 / ComparisonSieve Analysis vs Hydrometer Analysis
| Aspect | Sieve Analysis | Hydrometer Analysis |
|---|---|---|
| Particle size range | > 75 microns | < 75 microns (silt & clay) |
| Principle | Physical mesh separation | Sedimentation (Stokes' law) |
| Equipment | Sieve stack, shaker, balance | Hydrometer, sedimentation cylinder |
| Typical use | Sand & coarse aggregate grading | Fine-grained soil classification |
| Test duration | 30–45 minutes | 24 hours or more |
Conclusion
Sieve analysis of sand remains one of the simplest yet most decisive tests in civil engineering materials testing. By quantifying the grain size distribution, fineness modulus and grading zone of a sand sample, it gives engineers, contractors and quality control teams the data they need to accept or reject material, optimize concrete mix design, and design effective filter and drainage systems — all using inexpensive, widely available apparatus and a test that can be completed in well under an hour.
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Formatted, print-ready version for offline reading and lab reference.
17 / FAQFrequently Asked Questions
What is sieve analysis of sand?+
It is a laboratory test that passes a weighed sand sample through a stack of sieves of decreasing aperture size to determine its grain size distribution, expressed as percentage retained and percentage passing on each sieve.
Why is sieve analysis of sand important?+
It tells engineers whether sand is fine, medium or coarse, verifies compliance with grading limits in IS 383 or ASTM C33, and directly influences concrete workability, strength and durability.
What is the IS code for sieve analysis of sand?+
In India the test method is IS 2386 (Part I): 1963, and the resulting grading is checked against zone limits in IS 383: 2016.
What is fineness modulus of sand?+
Fineness modulus (FM) is obtained by summing the cumulative percentages retained on a standard sieve set and dividing by 100. A higher FM indicates coarser sand.
How many sieves are used in sieve analysis of sand?+
Typically 7 to 8 sieves: 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 µ, 300 µ, 150 µ, plus a pan.
What is the minimum sample weight required for sieve analysis of sand?+
A minimum oven-dried sample of about 500 g is common practice for fine aggregate, though up to 1000 g is often used for greater accuracy.
Is sieve analysis of sand safe?+
Yes, it is a safe, non-destructive, dry mechanical test when standard precautions such as a dust mask, safety glasses and gloves are used.
What is the difference between dry and wet sieve analysis?+
Dry sieve analysis sieves an oven-dried sample directly; wet sieve analysis first washes the sample over a 75 micron sieve to remove silt and clay for more accurate results.
What are the advantages of sieve analysis of sand?+
It is simple, fast, low-cost, standardized internationally, and gives directly usable grading data for mix design and material acceptance.
What is a good fineness modulus for sand used in concrete?+
A range of about 2.2 to 3.2 is generally acceptable, with 2.6–2.9 considered ideal medium sand for most structural concrete.
What is the difference between sieve analysis and hydrometer analysis?+
Sieve analysis sizes particles down to about 75 microns using physical mesh; hydrometer analysis measures finer silt/clay fractions below 75 microns using sedimentation.
How long does sieve analysis of sand take?+
Once the sample is dried and cooled, the test itself usually takes about 30 to 45 minutes.
Can sieve analysis be done without a mechanical shaker?+
Yes, the sieve stack can be shaken by hand in a circular and lateral motion for about 10 minutes, though results may be slightly less consistent than mechanical shaking.