Specification for one part gun-grade polysulphide-based joints sealants, Part 1: General requirements

IS 11433 (Part 1) - 1985: Scope Summary

• Scope: Specifies general requirements for one-part gun-grade polysulphide-based joint sealants used in construction.
• Sealant Type: Polysulphide polymer with moisture-activated curing system, curing into a rubber-like solid.
• Standard Basis: Derived from BS 5215:1975 for similar sealants.
• Parts:
  • Part 1: General requirements (this part)
  • Part 2: Methods of tests
• Compliance: Test results must meet specified criteria; rounding off per IS 2:1960.

Key Points:

Note on Testing:

• Lot conformity requires all tests on composite samples to meet specs (Clause 3.2).

If you need specific test methods or property requirements, refer to IS 11433 Part 2 for detailed test procedures and acceptance criteria.

IS 11433 (Part 1) - Selection of Material for Polysulphide Sealants

Key Specifications (Clause 4.1)

• Material must comply with requirements in Clauses 4.1.1 to 4.1.7 (detailed in Part 2).
• Sealant must cure at ambient temperature & humidity.
• Use manufacturer's recommended base polymer, fillers, and primers.
• Primer application on specific surfaces is mandatory if recommended.

Sampling (Clause 1.3)

• Number of packages for testing depends on lot size.
• Refer to Table 1 (Sampling plan):

Notes:

• Sealant must be one-part, gun-grade, polysulphide-based.
• Tests for compliance are detailed in Part 2.
• Rounding off of numerical values follows revised rules.

flowchart TD
    A[Manufacturer's Specifications] --> B[Selection of Base Polymer & Fillers]
    B --> C[Curing at Ambient Conditions]
    C --> D[Primer Application if Recommended]
    D --> E[Testing per IS 11433 Part 2]
    E --> F[Compliance Confirmation]

For detailed test methods and performance criteria, refer to IS 11433 Part 2.

IS 11433 Part 1 - Test Conditions Summary

1. Curing Conditions (Clause 3.2)

• Temperature: 40 ± 2°C
• Relative Humidity: 95 + 5%
• Standard curing ensures consistent sealant performance.

2. Sealant Application (Clause 2.1)

• Use base polymers, fillers as per manufacturer.
• Cure at ambient temperature & humidity following manufacturer’s instructions.
• Apply primer if recommended; report its use in test results.

3. Storage Life (Clause 3.3)

• Sealant must meet standards up to declared expiry date.
• Store as per manufacturer’s packaging instructions.

4. Conformity Criteria (Clause A-3.2)

• All test results on composite samples must meet specifications for lot acceptance.

Quick Reference Table for Test Conditions

flowchart LR
    A[Sealant Selection] --> B[Apply Primer if Recommended]
    B --> C[Cure at Ambient Conditions]
    C --> D[Standard Cure: 40±2°C, 95+5% RH]
    D --> E[Testing]
    E --> F{Meets Specifications?}
    F -- Yes --> G[Lot Accepted]
    F -- No --> H[Lot Rejected]

Note: Always follow manufacturer’s detailed instructions for primers, storage, and curing to ensure compliance with IS 11433 Part 1.

IS 11433 Part 1: Test Requirements Summary

• Storage Life (Clause 3.3):
  Sealant must meet all specs up to the declared expiry date, stored as per manufacturer instructions (usually cool, dry conditions).

• Testing (Clause 3.1, 4.1):

  • All specified characteristics must be tested on a composite sample.
  • Material must satisfy criteria in Clauses 4.1.1 to 4.1.7 (detailed test methods in Part 2).
  • Tests include physical, chemical, and performance properties relevant to sealants.

• Referee Sample (Clause 2.3):

  • A referee sample sealed by purchaser and vendor must be stored in agreed conditions (cool, dry) for dispute resolution.

Key Points for Testing

Typical Test Categories (from Part 2)

• Viscosity
• Tack-free time
• Hardness
• Adhesion strength
• Elongation at break
• Chemical resistance

flowchart TD
    A[Sealant Sample] --> B[Composite Sample Preparation]
    B --> C{Test All Characteristics}
    C --> D[Physical Tests]
    C --> E[Chemical Tests]
    C --> F[Performance Tests]
    D --> G[Viscosity, Hardness]
    E --> H[Chemical Resistance]
    F --> I[Adhesion, Elongation]
    J[Referee Sample] --> K[Sealed & Stored]

Summary: Follow manufacturer storage, test all parameters on composite samples, keep referee samples sealed for disputes, and refer to Part 2 for detailed test methods.

IS 11433 Part 1: Marking and Packaging Key Points

Packaging Requirements (Clause 6.1)

• Sealant packaging must be suitable to protect the product.
• Each package must clearly indicate:
  • Manufacturer's name or trade-mark
  • Quantity of sealant
  • Instructions for use and storage

Sampling Plan (Clause A-1.3)

• Number of packages to be selected depends on lot size.
• Refer to Table 1 for sampling details (not provided here, typically based on lot size and sample size).

Storage Life (Clause 3.3)

• Sealant must meet standard requirements up to the declared expiry date.
• Must be stored as per manufacturer’s instructions on the package.

Marking (Clause 5.2)

• Sealant may carry the Standard Mark to indicate compliance.

Summary Table (Example format for marking on package):

flowchart LR
  A[Sealant Packaging] --> B[Manufacturer's Name]
  A --> C[Quantity]
  A --> D[Instructions for Use & Storage]
  A --> E[Expiry Date]
  A --> F[Optional Standard Mark]

Note: For exact sampling sizes, refer to Table 1 in IS 11433 Part 1.

IS 11433 Part 1: Packaging Requirements Summary

Key Specifications:

• Packaging & Labeling (Clause 6.1):
  Each package must clearly show:

  • Manufacturer's name or trademark
  • Quantity
  • Instructions for use and storage

• Storage Life (Clause 3.3):
  Sealant must meet standard requirements up to the expiry date declared by the manufacturer and be stored as per package instructions.

Sampling for Testing (Clause 1.3 & 2.1):

• From each selected package, equal quantities are sampled and mixed to form a composite sample for triplicate testing.

Summary Diagram:

flowchart TD
    A[Lot of Packages] --> B[Select Sample Size per Table 1]
    B --> C[Take equal quantity from each package]
    C --> D[Mix to form Composite Sample]
    D --> E[Conduct Triplicate Tests]

This ensures representative sampling and quality control per IS 11433 Part 1.

IS 11433 Part 1: Sampling and Conformity Key Points

Sampling Procedure

• Composite Sample: Take equal quantities from randomly selected packages using a suitable sampling instrument. Mix thoroughly to form a composite sample.
• Sample Quantity: Enough for triplicate tests covering all standard requirements.
• Referee Sample: Sealed by purchaser and vendor, stored in a cool, dry place for dispute resolution (Clause 2.3).

Sampling Scale (Table A-2)

Conformity Testing

• Samples from each lot tested separately (Clause 1.2).
• Follow procedures in Appendix A for conformity determination (Clause 7.1).

Summary Diagram: Sampling Process

flowchart TD
    A[Select Lot] --> B[Randomly Select Packages]
    B --> C[Take Equal Quantities from Each]
    C --> D[Mix to Form Composite Sample]
    D --> E[Test Triplicate Samples]
    E --> F{Conformity?}
    F -- Yes --> G[Accept Lot]
    F -- No --> H[Use Referee Sample]

This ensures representative sampling and reliable conformity assessment as per IS 11433 Part 1.

IS 11433 Part 1: Sampling of One-Part Gun-Grade Polysulphide-Based Joint Sealants

Key Points from Clause 7.1 & Appendix A:

• Sampling Procedure: Representative samples must be taken to verify conformity.
• Sampling follows the procedure in Appendix A (details typical of IS sampling standards):
  • Select samples randomly from different batches.
  • Ensure sample size is sufficient to represent the batch.
  • Use clean, uncontaminated containers.

Typical Sampling Scale (Appendix A):

Key Specifications for Sampling:

• Samples must be fresh and sealed immediately after collection.
• Avoid contamination or exposure to air/moisture.
• Label samples with batch number, date, and source.

Summary Diagram of Sampling Process:

flowchart TD
    A[Start: Identify Batch] --> B[Randomly Select Sample Points]
    B --> C[Collect Samples in Clean Containers]
    C --> D[Seal and Label Samples]
    D --> E[Send for Testing as per IS 11433]

Additional Notes:

• Follow rules for rounding off numerical values as per IS standards.
• Testing includes physical & chemical conformity checks (not detailed here).

This ensures reliable quality control of polysulphide sealants used in construction joints.

IS 11433 Part 1: Scale of Sampling for One-Part Gun-Grade Polysulphide-Based Joint Sealants

Key Specifications:

• Sampling Method:
  From each randomly selected package, take approximately equal quantities using a suitable sampling instrument. Mix thoroughly to form a composite sample sufficient for triplicate testing.

• Number of Packages to Sample (Table 1):

• Random Selection:
  Follow IS 4905-1968 for random sampling procedure to ensure unbiased package selection.

• Testing:
  Composite samples must be adequate for triplicate determinations as per the standard requirements.

Summary Flow:

flowchart TD
    A[Start: Lot of Packages] --> B[Determine Lot Size]
    B --> C{Lot Size}
    C -->|Up to 25| D[Select 2 Packages]
    C -->|26 to 50| E[Select 3 Packages]
    C -->|51 to 150| F[Select 5 Packages]
    C -->|151 and above| G[Select 8 Packages]
    D --> H[Random Selection per IS 4905-1968]
    E --> H
    F --> H
    G --> H
    H --> I[Take equal quantity from each package]
    I --> J[Mix thoroughly to form composite sample]
    J --> K[Perform triplicate tests]

This ensures representative sampling and reliable conformity testing as per IS 11433 Part 1.

IS 11433 Part 1: Test Samples and Referee Samples

Key Specifications:

• Sampling Method (Clause A-1.3.1):
  Packages selected randomly as per IS 4905-1968 to ensure unbiased sampling.

• Sample Size (Table A-2.1):
  Number of packages to sample depends on lot size:

• Composite Sample (Clause A-2.1):
  Equal quantities taken from selected packages, mixed thoroughly to form a composite sample sufficient for triplicate tests.

• Division of Composite Sample (Clause A-2.2):
  Composite sample divided into three equal parts:

  • Purchaser's sample
  • Supplier's sample
  • Referee sample

• Referee Sample Handling (Clause A-2.3):
  Sealed by purchaser and vendor, kept in a cool, dry place, used only in case of disputes.

Summary Flow:

flowchart TD
    A[Select Packages Randomly] --> B[Take Equal Quantities from Each]
    B --> C[Mix to form Composite Sample]
    C --> D[Divide into 3 Equal Parts]
    D --> E[Purchaser's Sample]
    D --> F[Supplier's Sample]
    D --> G[Referee Sample]
    G --> H[Seal & Store Cool/Dry]

This ensures fair testing and dispute resolution per IS 11433 Part 1.

IS 11433 Part 1: Number of Tests & Criteria for Conformity

Key Points:

• Sampling:
  Samples are taken from each lot separately to ascertain conformity (Clause 1.2).

• Composite Sample:
  Equal quantities from selected packages are mixed to form a composite sample for testing (Clause 2.1).

• Scale of Sampling (No. of Packages vs Sample Size):

• Criteria for Conformity:
  The lot is declared conforming only if all test results on the composite sample meet the specification requirements (Clause 3.2).

• Referee Sample:
  A sealed referee sample is kept for dispute resolution, stored in a cool, dry place (Clause 2.3).

Summary Formula for Sampling Size:

[ \text{Sample Size} = \begin{cases} 2 & \text{if } \leq 25 \text{ packages} \ 3 & 26 - 50 \ 5 & 51 - 150 \ 8 & > 150 \ \end{cases} ]

flowchart TD
    A[Lot of Packages] --> B{No. of Packages}
    B -->|Up to 25| C[Sample 2 Packages]
    B -->|26 to 50| D[Sample 3 Packages]
    B -->|51 to 150| E[Sample 5 Packages]
    B -->|151 and above| F[Sample 8 Packages]
    C & D & E & F --> G[Composite Sample]
    G --> H[Test for Specification]
    H --> I{All Tests Pass?}
    I -->|Yes| J[Lot Conforms]
    I -->|No| K[Lot Rejected]

Use this sampling and testing procedure to ensure compliance with IS 11433 Part 1 standards.