chemical resistant mortars, Part III: Sulphur type

IS 4832 Part 3 (1968) - Introduction & Key Specifications

1. Purpose

• Specifies sulphur type chemical resistant mortars used for acid-resistant brick/tile jointing, flooring, linings.
• Sulphur mortars resist most acids except concentrated oxidizing acids; poor resistance to alkalies.
• Refer IS:4442-1967 for usage guidelines.

2. Physical Requirements (Table 1)

3. Sieve Analysis for Silica Filler (Clause 3.2)

4. Additional Notes

• Sulphur mortar must not be overheated during heating.
• Chemical resistance guide: IS:4442-1980 Table 1.
• Testing methods refer IS:4456 (Part II)-1967.

Summary Diagram of Sieve Analysis:

graph LR
A[Silica Filler] --> B[425 micron sieve: ≤5% retained]
A --> C[150 micron sieve: ≥10% retained]
A --> D[75 micron sieve: ≥35% retained]

This concise summary covers key physical and chemical requirements and sieve analysis per IS 4832 Part 3.

Scope & Key Specifications from IS 4832 Part 3 (Sulphur Type Chemical Resistant Mortars)

1. Scope (Clause 2.0 & 3.3)

• Defines sulphur type chemical resistant mortars.
• A lot passes if all test requirements are met.

2. Physical Requirements (Table 1, Clause 3.2)

3. Sieve Analysis for Silica Filler (Clause 3.2, Table A-4)

4. Additional Notes

• Chemical resistance guide: IS 4442-1980 Table 1.
• Test sieves as per IS 460 (Part I) - 1978.
• Minimum batch quantity updated to 5000 kg.

flowchart TD
    A[Start: Raw Materials] --> B[Sieve Analysis of Silica Filler]
    B -->|Passes Sieve Criteria| C[Mixing with Sulphur]
    C --> D[Physical Tests (Strength, Absorption)]
    D --> E{All Tests Passed?}
    E -->|Yes| F[Lot Accepted]
    E -->|No| G[Re-test or Reject]

This summary covers scope, physical & sieve requirements, and test criteria essential for compliance with IS 4832 Part 3.

IS 4832 Part 3: Definitions & Key Specifications

Key Definitions (Clause 2.0)

• Defines terms specific to sulphur type chemical resistant mortars.
• Ensures uniform understanding for testing and quality control.

Physical Requirements (Clause 3.2, Table 1)

Sieve Analysis for Silica Filler (Clause 3.2, Table A-4)

Additional Notes

• Chemical resistance guide: IS 4442-1980 Table 1.
• Test sieves as per IS 460 (Part I) - Wire cloth test sieves.
• Lot acceptance requires all test results to meet specified criteria.

flowchart TD
    A[Raw Materials] --> B[Sieve Analysis]
    B --> C[Physical Tests]
    C --> D{Meets Requirements?}
    D -- Yes --> E[Lot Accepted]
    D -- No --> F[Retest or Reject]

This summarizes definitions, key physical & chemical requirements, and sieve analysis per IS 4832 Part 3.

IS 4832 Part 3: Chemical Composition & Specifications for Sulphur Type Chemical Resistant Mortars

1. Chemical Composition (Clause 3.1)

*Inert fillers include silica or other chemically resistant materials.

2. Filler Particle Size Distribution (Clause 3.2)

3. Physical Requirements (Clause 3.2, Table 1)

4. Notes

• Sulphur mortar is an inorganic compound of sulphur + inert filler.
• Small amounts of chemically resistant modifying agents may be added.
• Testing methods refer to IS:4456 Part II (1967).

flowchart TD
    A[Sulphur (55-70%)] --> C[Mixing]
    B[Inert Filler (30-45%)] --> C
    C --> D[Sulphur Type Chemical Resistant Mortar]
    D --> E[Physical Tests]
    E --> F[Compressive Strength ≥ 280 kg/cm²]
    E --> G[Tensile Strength ≥ 30 kg/cm²]
    E --> H[Flexural Strength ≥ 70 kg/cm

IS 4832 Part 3: Physical Requirements for Sulphur Type Chemical Resistant Mortars

Key Physical Properties (Table 1, Clause 3.2)

Silica Filler Grading (Clause 3.2)

Additional Notes:

• Manufacturer must certify filler grading if requested (Clause 3.2.1).
• Chemical resistance guide: IS 4442-1980 Table 1.
• Testing per IS: 4456 Part II (1967) methods.

This ensures mortar meets durability, strength, and chemical resistance for industrial use.

Chemical Resistance Requirements - IS 4832 Part 3

Key Physical Requirements of Sulphur Type Chemical Resistant Mortars (Clause 3.2, Table 1)

Silica Filler Sieve Analysis (Clause 3.2, Table A-4)

Chemical Resistance Testing

• Chemical resistance limits are mutually agreed between purchaser and supplier.
• Testing per Clause 10 of IS 4456 (Part II)-1967.
• Refer to Table 1 of IS 4442-1980 for general chemical resistance guidelines.

Summary Diagram of Key Properties

graph LR
A[Physical Properties] --> B[Compressive Strength ≥ 280 kg/cm²]
A --> C[Tensile Strength ≥ 30 kg/cm²]
A --> D[Flexural Strength ≥ 70 kg/cm²]
A --> E[Bond Strength ≥ 10 kg/cm²]
A --> F[Thermal Shock Retention ≥ 20%]
A --> G[Moisture Absorption ≤ 1%]
A --> H[Aggregate Settlement Variation ≤ 0.6]

Note: Always verify chemical resistance with actual tests as per IS 4456 Part II methods.

IS 4832 Part 3: Storage & Physical Requirements for Sulphur Type Chemical Resistant Mortars

Key Physical Properties (Clause 3.2, Table 1)

Silica Filler Sieve Analysis (Clause 3.2, Table A-4)

Storage Requirements (Clause 8.2)

• Mark each package with:
  • Manufacturer’s name/trade-mark
  • Date of manufacture/batch number
  • Net weight
  • Storage instructions (keep dry, avoid direct sunlight, store in cool place)

Additional Notes:

• Use IS:4456 (Part II) for test methods.
• Refer IS:4442-1980 for chemical resistance guidance.
• Proper storage ensures mortar properties are maintained.

flowchart TD
    A[Manufacture] --> B[Packaging]
    B --> C[Marking: Manufacturer, Date, Weight, Storage]
    C --> D[Storage: Dry, Cool, Covered]
    D --> E[Use in Construction]

This ensures mortar quality and durability during storage and use.

Sampling Procedure for Acceptance Test (IS 4832 Part 3)

Key Points from Appendix A (Clause 7.1)

• Sampling:
  Samples are selected and tested separately for each lot to verify conformity (A-1.2).

• Tests:
  Samples must be tested for all requirements as per Table 1 of the standard (A-3.2).

• Sieve Analysis Limits for Silica Filler (Clause 3.2, Table A-4):

• For other fillers, refer to SI No. (vii) of Table 1.

• Lot Size:
  The lot size is updated to 5,000 kg (from 2,500 kg).

• Test Sieves:
  Use IS:460 (Part I) - 1978 wire cloth test sieves.

Summary Diagram: Sampling & Testing Flow

flowchart TD
    A[Start: Lot Received] --> B[Select Samples per Lot]
    B --> C[Test for All Requirements (Table 1)]
    C --> D{Sieve Analysis of Silica Filler}
    D -->|425 micron| E[Max 5% Retained]
    D -->|150 micron| F[Min 10% Retained]
    D -->|75 micron| G[Min 35% Retained]
    E & F & G --> H[Evaluate Conformity]
    H --> I{Pass?}
    I -->|Yes| J[Accept Lot]
    I -->|No| K[Reject or Re-test]

Note: For chemical resistance, refer to IS:4442-1980 Table 1 as a guide.

IS 4832 Part 3: Packing and Marking Key Points

Packing and Marking (Clause 8)

• Marking on each package must include:

  • Manufacturer's name or trademark
  • Date of manufacture or batch number
  • Net weight
  • Storage requirements

• Optional Marking:

  • Standard Mark (BIS certification) may be applied as per BIS Act 1986, indicating compliance with IS standards and ongoing quality control.

Sampling (Appendix A, Clause 7.1)

• Samples for acceptance tests must be:
  • Drawn as per Appendix A procedures
  • Stored in moisture-proof, air-tight containers
  • Clearly labeled with supplier name, lot number, sampling date, etc.

Summary Table for Marking Information

flowchart TD
    A[Package] --> B[Marking]
    B --> C[Manufacturer Name/Trademark]
    B --> D[Date/Batch No.]
    B --> E[Net Weight]
    B --> F[Storage Requirements]
    B --> G[Standard Mark (Optional)]

This ensures traceability, quality assurance, and safe handling of materials per IS 4832 Part 3.

IS 4832 Part 3: Sampling Procedure Details

Key Points from the Code

• Sampling for Acceptance Test (Appendix A, Clause 7.1):

  • Samples are drawn separately for each lot to verify conformity.
  • Samples must be tested for all requirements listed in Table 1 of the standard (Clause A-3.2).
  • Sampling method and conformity criteria are detailed in Appendix A.

• Marking (Clause 8.2.1):

  • Each package may bear the Standard Mark, indicating compliance with BIS quality control and inspection.
  • Use of the Standard Mark is regulated by the Bureau of Indian Standards Act, 1986.

Sampling Procedure Summary

Notes

• Sampling ensures quality control and product conformity.
• The Standard Mark guarantees ongoing surveillance by BIS.

flowchart TD
    A[Lot of Material] --> B[Draw Representative Samples]
    B --> C[Test Samples as per Table 1]
    C --> D{Do samples meet all requirements?}
    D -- Yes --> E[Accept Lot]
    D -- No --> F[Reject Lot]

For detailed sample sizes and test parameters, refer to Table 1 and Appendix A of IS 4832 Part 3.

IS 4832 Part 3 (1968) - Updates & Revisions Summary

Key Updated Specifications:

1. Sieve Analysis of Silica Filler (Clause 3.2)

Note: For other fillers, refer to Table 1, SI No. (vii).

2. Physical Requirements of Sulphur Type Mortars (Table 1, Clause 3.2)

3. Retesting Clause (4.1)

• If initial samples fail Table 1 requirements, retest a new random sample.
• If second test fails, reject entire batch.

4. Chemical Resistance Guide

• Refer IS:4442-1980 Table 1 for chemical resistance of sulphur mortars.

5. Other Amendments

• Test sieve specification updated: IS:460(Part I)-1978 (wire cloth test sieves).
• Batch size updated from 2,500 kg to 5,000 kg.

Important References:

• IS:4442-1980: Chemical resistance guide for sulphur mortars.
• IS:4456 (Part II)-1967: Test methods for sulphur type mortars.
• IS:460 (Part I)-1978: Test sieve specifications.

Summary Flowchart for Retesting Procedure: