The IS 3182:1986 standard defines the specifications for broken brick (burnt clay) fine aggregates used in lime mortar. It outlines criteria for grading, physical attributes, and quality to guarantee their appropriateness and longevity in construction. This guideline is vital for engineers, material suppliers, and builders working with burnt clay fine aggregates in lime mortar mixes.
Overview
The IS 3182:1986 standard defines the specifications for broken brick (burnt clay) fine aggregates used in lime mortar. It outlines criteria for grading, physical attributes, and quality to guarantee their appropriateness and longevity in construction. This guideline is vital for engineers, material suppliers, and builders working with burnt clay fine aggregates in lime mortar mixes.
Audience
Contents
Structure
IS 3182 Scope and Core Specifications
This code specifies requirements for broken brick fine aggregates intended for lime mortar applications. The main parameters and test standards include:
| Property | Specification | Test Standard Reference |
|---|---|---|
| Specific Gravity | 2.4 - 2.7 | IS 2386 Part 3 (1963) |
| Maximum Clay and Silt (%) | 5% | IS 2386 Part 2 (1963) |
| Finer than 75 microns (%) | 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter (%) | 1% | Appendix B, IS 3068 (1986) |
flowchart TD
BBFA[Broken Brick Fine Aggregate] --> SG[Specific Gravity Test]
BBFA --> CS[Clay & Silt Content Test]
BBFA --> PSD[Particle Size Distribution (<75 μm)]
BBFA --> WSM[Water Soluble Matter Test]
SG --> IS2386P3[IS 2386 Part 3]
CS --> IS2386P2[IS 2386 Part 2]
PSD --> IS2386P1[IS 2386 Part 1]
WSM --> IS3068B[IS 3068 Appendix B]
These requirements ensure the aggregate’s suitability for lime mortar as per IS 3182.
1. Rounding of Test Results (Clause 0.4)
2. Grading Requirements (Clause 3.1, Table 1)
| IS Sieve Size (mm) | Percentage Passing (by mass) |
|---|---|
| 4.75 | 100 |
| 2.36 | 90 to 100 |
| 1.18 | 70 to 100 |
| 0.60 | 40 to 100 |
| 0.30 | 5 to 70 |
| 0.15 | 0 to 15 |
| 0.075 | Nil |
3. Quality Characteristics & Limits (Clause 3.2, Table 2)
| Property | Maximum Limit | Reference Test Method |
|---|---|---|
| Specific Gravity | 2.4 to 2.7 | IS 2386 Part 3 (1963) |
| Clay and Silt Content (%) | 5% | IS 2386 Part 2 (1963) |
| Finer than 75 μm (%) | 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter (%) | 1% | Appendix B, IS 3068 (1986) |
flowchart TD
BBFA[Broken Brick Fine Aggregate] --> GR[Physical Grading per Table 1]
BBFA --> QL[Quality Limits per Table 2]
GR --> SA[IS 2386 Part 1 - Sieve Analysis]
QL --> CS[IS 2386 Part 2 - Clay & Silt]
QL --> SG[IS 2386 Part 3 - Specific Gravity]
IS 3182: Physical Criteria for Broken Brick Fine Aggregate
The fine aggregate must comply with the following sieve analysis percentages:
| IS Sieve (mm) | Passing Percentage Range |
|---|---|
| 4.75 | 100 |
| 2.36 | 90 - 100 |
| 1.18 | 70 - 100 |
| 0.60 | 40 - 100 |
| 0.30 | 5 - 70 |
| 0.15 | 0 - 15 |
| 0.075 | Nil |
| Property | Required Range | Test Reference |
|---|---|---|
| Specific Gravity | 2.4 - 2.7 | IS 2386 Part 3 (1963) |
| Clay and Silt Content (%) | Maximum 5% | IS 2386 Part 2 (1963) |
| Finer than 75 µm (%) | Maximum 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter (%) | Maximum 1% | Appendix B, IS 3068 (1986) |
graph LR
A[4.75 mm] --> B[2.36 mm]
B --> C[1.18 mm]
C --> D[0.60 mm]
D --> E[0.30 mm]
E --> F[0.15 mm]
F --> G[0.075 mm]
This ensures the particle size distribution aligns with quality requirements.
References:
Sampling Guidelines per IS 3182
| Property | Requirement | Test Method Reference |
|---|---|---|
| Specific Gravity | 2.4 – 2.7 | IS 2386 Part 3 (1963) |
| Maximum Clay and Silt (%) | 5% | IS 2386 Part 2 (1963) |
| Maximum Finer than 75 µm (%) | 15% | IS 2386 Part 1 (1963) |
| Maximum Water Soluble Matter | 1% | Appendix B, IS 3068 (1986) |
flowchart TD
Sampling[Sampling as per IS 2430:1969] --> AggSampling[Aggregate Sampling]
AggSampling --> Testing[Tests per IS 2386 Parts 1, 2, 3]
Testing --> Evaluation{Evaluate Characteristics}
Evaluation --> SG[Specific Gravity 2.4 - 2.7]
Evaluation --> CS[Clay & Silt ≤ 5%]
Evaluation --> Fines[Finer Material ≤ 15%]
Evaluation --> WSM[Water Soluble Matter ≤ 1%]
This procedure ensures adherence to IS 3182 quality standards.
IS 3182 Testing Protocols and Specifications
| Property | Limit | Test Method Reference |
|---|---|---|
| Specific Gravity | 2.4 - 2.7 | IS 2386 Part 3 (1963) |
| Clay and Silt (%) | Maximum 5% | IS 2386 Part 2 (1963) |
| Finer than 75 µm (%) | Maximum 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter (%) | Maximum 1% | Appendix B, IS 3068 (1986) |
flowchart TD
Sample[Sample Collection] --> ParticleSizeTest[Particle Size Test (IS 2386 Part 1)]
ParticleSizeTest --> ClaySiltTest[Clay & Silt Test (IS 2386 Part 2)]
ClaySiltTest --> SpecGravityTest[Specific Gravity Test (IS 2386 Part 3)]
SpecGravityTest --> WaterSolubleTest[Water Soluble Matter Test (IS 3068 App B)]
WaterSolubleTest --> ComplianceCheck[Compare Results with Limits]
ComplianceCheck -->|Pass| Accept[Accept Material]
ComplianceCheck -->|Fail| Reject[Reject Material]
These test protocols ensure the broken brick fine aggregate meets IS 3182 standards.
| IS Sieve Size (mm) | Percentage Passing (%) |
|---|---|
| 4.75 | 100 |
| 2.36 | 90 - 100 |
| 1.18 | 70 - 100 |
| 0.60 | 40 - 100 |
| 0.30 | 5 - 70 |
| 0.15 | 0 - 15 |
| 0.075 | Nil |
| Property | Requirement | Test Method Reference |
|---|---|---|
| Specific Gravity | 2.4 - 2.7 | IS 2386 Part 3 (1963) |
| Clay and Silt Content (%) | Maximum 5% | IS 2386 Part 2 (1963) |
| Material Finer than 75 µm (%) | Maximum 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter (%) | Maximum 1% | Appendix B, IS 3068 (1986) |
flowchart TD
Sample[Aggregate Sample] --> SieveTest[Test Sieve Analysis]
SieveTest --> GradingCheck{Pass % within limits?}
GradingCheck -->|Yes| PassGrade[Grading Passed]
GradingCheck -->|No| FailGrade[Grading Failed]
Sample --> QualityTests[Specific Gravity, Clay, Fines, Water Soluble Tests]
QualityTests --> QualityCheck{Within Limits?}
QualityCheck -->|Yes| PassQuality[Pass Quality]
QualityCheck -->|No| FailQuality[Fail Quality]
IS 3182 References to Related Standards
IS 3182 incorporates references to other Indian Standards for various requirements and methodologies:
Rounding Off Test Values: As per IS 2:1960, all test results must be rounded to match the significant figures of the values specified in IS 3182.
Updated Standards:
| IS Code | Subject | Purpose in IS 3182 |
|---|---|---|
| IS 2:1960 | Rules for rounding off values | For rounding test and calculated results |
| IS 2430:1986 | Sampling and testing methods | Updated sampling and test references |
| IS 1077:1992 | Specification for common cement | Updated cement specifications |
flowchart LR
IS3182[IS 3182] --> RoundOff[IS 2:1960 - Rounding Rules]
IS3182 --> Sampling[IS 2430:1986 - Sampling Methods]
IS3182 --> CementSpec[IS 1077:1992 - Cement Specifications]
Always ensure the latest IS codes are referred to for accurate compliance.
Overview of Annexures and Appendices in IS 3182
| Property | Requirement | Test Reference |
|---|---|---|
| Specific Gravity | 2.4 - 2.7 | IS 2386 Part 3 (1963) |
| Clay and Silt Content (%) | Maximum 5% | IS 2386 Part 2 (1963) |
| Material Finer than 75 µm (%) | Maximum 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter (%) | Maximum 1% | Appendix B, IS 3068 (1986) |
flowchart TD
BBFA[Broken Brick Fine Aggregate] --> SG[Specific Gravity (2.4-2.7)]
BBFA --> CS[Clay & Silt ≤ 5%]
BBFA --> Finer75[Finer than 75 μm ≤ 15%]
BBFA --> WSM[Water Soluble Matter ≤ 1%]
SG --> IS2386P3[IS 2386 Part 3]
CS --> IS2386P2[IS 2386 Part 2]
Finer75 --> IS2386P1[IS 2386 Part 1]
WSM --> IS3068B[IS 3068 Appendix B]
This summary provides quick reference for annexure requirements.
Frequently Asked
As specified in IS 3182 (1986), broken brick fine aggregates should conform to the following grading percentages (Clause 3.1, Table 1):
| IS Sieve Size | Percent Passing by Mass |
|---|---|
| 4.75 mm | 100% |
| 2.36 mm | 90 - 100% |
| 1.18 mm | 70 - 100% |
| 600 μm | 40 - 100% |
| 300 μm | 5 - 70% |
| 150 μm | 0 - 15% |
| 75 μm | Nil |
Additional conditions include:
These grading limits ensure the aggregate’s suitability for lime mortar applications according to IS 3182.
IS 3182 mandates that broken brick fine aggregates must be essentially free from clay and silt. Specifically:
In summary:
| Parameter | Maximum Allowed |
|---|---|
| Clay particles | Should be absent |
| Silt and soil coatings | Should be absent |
| Fines passing 150 µm sieve | 0 - 15% by mass |
This ensures the aggregates are clean and do not degrade the strength or durability of lime mortar.
IS 3182 specifies the following test methods for evaluating broken brick fine aggregates (Clause 3.2):
| Property | Maximum Limit | Test Standard |
|---|---|---|
| Specific Gravity | 2.4 - 2.7 | IS 2386 Part 3 (1963) |
| Clay and Silt Content (%) | 5% | IS 2386 Part 2 (1963) |
| Finer than 75 µm (%) | 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter (%) | 1% | Appendix B, IS 3068 (1986) |
These tests ensure the aggregate meets particle size distribution, impurity limits, density, and chemical stability standards required for lime mortar.
Relevant IS codes include IS 2386 Parts 1, 2, and 3, and IS 3068 Appendix B.
Per IS 3182 Clause 3.2 (Table 2), burnt clay fine aggregates (broken brick fine aggregates) must have a specific gravity within the range of 2.4 to 2.7.
Key points:
This range ensures proper density and material quality suitable for structural lime mortar applications.
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Using aggregates within this specific gravity range supports strength and durability.
Yes, IS 3182 enforces a restriction on water soluble matter in broken brick fine aggregates:
Additional physical requirements include:
| Property | Maximum Limit | Test Standard |
|---|---|---|
| Clay and Silt Content | 5% | IS 2386 Part 2 (1963) |
| Material finer than 75 µm | 15% | IS 2386 Part 1 (1963) |
| Water Soluble Matter | 1% | Appendix B, IS 3068 (1986) |
| Specific Gravity | 2.4 - 2.7 | IS 2386 Part 3 (1963) |
Limiting the water soluble matter is critical to prevent chemical degradation and ensure long-lasting lime mortar.
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Hence, water soluble matter content should not exceed 1% to comply with IS 3182.
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