bitumen primer for use in waterproofing and damp-proofing
1986 Edition

Overview of Bitumen Primer Specifications

Scope:
This document defines the testing methods and quality benchmarks for tar and bituminous primers utilized in waterproofing and damp-proofing of concrete and masonry.

Conformity Formula for Testing (Clause 3.2):

For viscosity or penetration results:

• Calculate the average ( \bar{X} ) and range ( R ).
• Compliance requires: [ (\bar{X} - 0.6R) \geq \text{Minimum Limit} ] [ (\bar{X} + 0.6R) \leq \text{Maximum Limit} ]

Primer Quality Criteria (Table 1, Clause 3.1):

Notes:

• Definitions per IS 4911-1968 apply.
• Composite samples must meet all parameter requirements (Clause 3.3).
• Testing ensures primer quality for waterproofing applications.

flowchart TD
    A[Sample Test Data] --> B[Compute Mean & Range]
    B --> C{Verify Limits}
    C -->|Within Limits| D[Conforms]
    C -->|Out of Limits| E[Reject]

Terminology & Definitions in Bitumen Primer Standard

1. Terminology

• Refer to IS 4911-1968 for standard definitions relevant to bituminous waterproofing and damp-proofing products.

2. Compliance Calculations (Clause 3.2)
For measured parameters such as viscosity or penetration, calculate:

[ \begin{cases} \bar{X} - 0.6R \geq \text{Minimum Specified Value} \ \bar{X} + 0.6R \leq \text{Maximum Specified Value} \end{cases} ]

3. Primer Property Requirements (Table 1, Clause 3.1)

flowchart TD
    A[Test Data] --> B[Calculate Average & Range]
    B --> C{Check Compliance}
    C -->|Pass| D[Accept Sample]
    C -->|Fail| E[Reject Sample]

Summary of Bitumen Primer Specifications

Compliance Formula (Clause 3.2)

For test values (viscosity or penetration):

• Define ( \bar{X} ) as the mean
• Define ( R ) as the range

The product is compliant if:

• ( \bar{X} - 0.6R \geq ) Minimum specification
• ( \bar{X} + 0.6R \leq ) Maximum specification

Primer Property Requirements (Table 1, Clause 3.1)

Notes:

• Testing must follow indicated IS standards.
• All criteria must be met for acceptance.
• The conformity formula aids quality assurance.

flowchart LR
    A[Test Results] --> B[Calculate Mean & Range]
    B --> C{Meets Limits?}
    C -->|Yes| D[Accept]
    C -->|No| E[Reject]

Marking Standards for Bitumen Primer Packaging

Mandatory Marking Details (Clause 4.1)

Each container must be clearly and permanently labeled with:

• Manufacturer’s name and trademark (if applicable)
• Date of production
• Batch identification number
• Bitumen grade used in primer formulation

Optional Labeling (Clause 4.1.1)

• ISI certification mark may be displayed to indicate compliance with IS standards and quality control protocols.

Compliance Verification (Clause 3.2)

For key properties like viscosity or penetration, calculate:

• Mean (( \bar{X} ))
• Range (( R ))

Acceptance if:

[ \begin{cases} \bar{X} - 0.6R \geq \text{Minimum Limit} \ \bar{X} + 0.6R \leq \text{Maximum Limit} \end{cases} ]

Marking Summary Table

This labeling scheme ensures product traceability and adherence to IS 3384 standards.

Sampling and Conformity Assessment per IS 3384

Sampling Details (Appendix A, Clause 1.2)

• Number of containers to sample depends on the total lot size:

Sample Preparation (Clause A-2.2)

• For tests such as flash point, residue up to 360°C, water content, and residue properties (excluding ductility at 27°C), prepare a composite sample by blending equal parts from each individual sample.

Compliance Requirements (Clause A-3.3)

• The composite sample must meet all specified quality parameters.

Process Flow

flowchart TD
    A[Select Lot] --> B[Determine Number of Samples from Table]
    B --> C[Collect Individual Samples]
    C --> D[Create Composite Sample (Equal Mix)]
    D --> E[Conduct Tests (Flash Point, Residue, Water Content)]
    E --> F{Complies with Specs?}
    F -- Yes --> G[Approve Lot]
    F -- No --> H[Reject Lot]

Highlights:

• Sampling size scales with lot volume.
• Composite samples ensure representativeness.
• Lot acceptance depends on composite test results.

Sampling Methodology as per IS 3384

Sample Size Determination (Clause 1.2, Table 2)

Sampling Technique (Clause 1.3)

• From each selected container, obtain a representative average sample conforming to IS 1201-1978.
• Samples must be kept separately.
• Follow all recommended precautions to ensure sample representativeness.

Compliance Verification (Clause 5.1 & Appendix A)

• Composite samples formed by combining equal quantities from individual samples must meet all specification requirements.

Sampling Workflow

flowchart TD
    A[Determine Lot Size] --> B[Select Sample Containers]
    B --> C[Draw Representative Samples (IS 1201-1978)]
    C --> D[Store Individually]
    D --> E[Combine for Composite Sample]
    E --> F[Test Composite Sample]
    F --> G{Pass Criteria?}
    G -->|Yes| H[Accept Lot]
    G -->|No| I[Reject Lot]

This protocol guarantees statistically valid sampling for quality evaluation.

Sample Testing Guidelines per IS 3384

Sampling Requirements (Clause 5.1 & Appendix A)

• Representative samples must be taken from each selected container using IS 1201-1978 methods.
• Samples remain separate until composite preparation.
• Number of samples drawn varies with lot size (see Table 2).

Compliance Testing (Clause 3.3)

• Composite samples are tested for all specified characteristics (see Appendix A-2.2).

Summary

• Follow IS 1201-1978 for sampling technique.
• Sample size determined by lot quantity.
• Composite testing validates conformity.

flowchart TD
    A[Lot Containers] --> B[Select Containers]
    B --> C[Draw Representative Samples]
    C --> D[Store Samples]
    D --> E[Prepare Composite Sample]
    E --> F[Test Composite]
    F --> G{Conforms?}
    G -- Yes --> H[Accept]
    G -- No --> I[Reject]

This ensures reliable evaluation of bituminous primer quality.

Criteria for Product Conformity under IS 3384

• A lot is deemed conforming when it satisfies the conditions outlined in Clauses 3.1, A-3.1, A-3.2, and A-3.3.

• Sampling and testing involve representative samples combined into a composite sample as per Appendix A.

• The composite sample undergoes tests including flash point, residue after distillation to 360°C, water content, and residue tests excluding ductility at 27°C.

• Composite results must meet all specified standards for acceptance.

Summary Table of Conformity Requirements

Process Summary

flowchart TD
    A[Individual Samples] --> B[Mix Equal Volumes]
    B --> C[Composite Sample]
    C --> D[Conduct Tests]
    D --> E{Pass All Tests?}
    E -->|Yes| F[Lot Accepted]
    E -->|No| G[Lot Rejected]

This ensures the entire batch meets IS 3384 standards for bitumen primers.

IS 3384: Sampling Quantities and Acceptance Criteria

1. Sampling Size Table (Table 2)

2. Compliance Formula for Viscosity/Penetration (Clause 3.2)

Calculate:

• Mean (( \bar{X} ))
• Range (( R ))

Acceptance condition:

[ \begin{cases} \bar{X} - 0.6R \geq \text{Min Specified Limit} \ \bar{X} + 0.6R \leq \text{Max Specified Limit} \end{cases} ]

3. Sampling Approach

• Draw representative samples as per Appendix A.
• Composite samples must meet all specified characteristics.

These tables and formulas ensure statistically valid sampling and product conformity.