Bitumen-based felts - Methods of the test, Part 5: Heat resistance test

IS 13826 Part 5: Scope Summary

Scope:

• Covers heat resistance test method for bitumen felts used in waterproofing and damp-proofing.
• Applies to various types of bitumen felts (hessian base, glass fibre base).
• Complements IS 1322:1993 and IS 7193:1994, which specify bitumen felt types.
• Related parts of IS 13826 cover other tests:
  • Part 1: Breaking strength
  • Part 2: Pliability
  • Part 3: Storage sticking
  • Part 4: Pressure head
  • Part 6: Water absorption
  • Part 7: Binder content determination

Key Specifications:

• Heat resistance is checked by exposing samples to a heated chamber.
• Samples are visually examined for melting signs after test duration.
• Reporting includes:
  • Date of testing
  • Sample details
  • Observations

Reference:

• Definitions per IS 4911:1986 apply.

Test Procedure (Clause 5.3 Summary)

Notes:

• The standard focuses on qualitative heat resistance rather than quantitative thermal properties.
• Ensures bitumen felts maintain integrity under heat exposure relevant to site conditions.

flowchart TD
    A[Start Test] --> B[Place sample in heated chamber]
    B --> C[Maintain temperature for specified duration]
    C --> D[Remove sample]
    D --> E[Visual examination for melting]
    E --> F{Melting observed?}
    F -->|Yes| G[Fail heat resistance]
    F -->|No| H[Pass heat resistance]
    G --> I[Report with observations]
    H --> I

For detailed test conditions (temperature, duration), refer to IS 13826 Part 5 full text.

IS 13826 Part 5 (1994) — Heat Resistance Test for Bitumen Felt

Key Specifications & Procedure (Clause 5.3):

• Test Objective: Determine heat resistance by visually examining samples after heating.
• Procedure:
  • Samples are heated in a chamber for a specified period.
  • At test end, samples are removed and visually inspected for melting signs of the bitumen compound.
• Reporting must include:
  • Date of testing
  • Sample details
  • Observations (presence/absence of melting)

Related Standards:

• IS 1322: Specification for bitumen felts (hessian base)
• IS 7193: Specification for glass fibre base bitumen felts
• IS 13826 (Parts 1-7): Other physical tests (breaking strength, pliability, water absorption, etc.)

Notes:

• Heat resistance is a qualitative test based on visual observation.
• No numerical formula; compliance is based on absence of melting.
• Results are rounded as per IS 2:1960.

Summary Table: Heat Resistance Test Reporting

flowchart TD
    A[Start: Sample Preparation] --> B[Heat in Chamber for Specified Duration]
    B --> C[Remove Sample]
    C --> D{Visual Inspection}
    D -->|Melting Observed| E[Fail: Report Melting]
    D -->|No Melting| F[Pass: Report No Melting]
    E --> G[Record Date, Sample Details, Observation]
    F --> G
    G --> H[End]

This test ensures bitumen felts maintain integrity under heat, critical for waterproofing durability.

IS 13826 Part 5: Definitions & Key Specifications

• Definitions:
  Refer to IS 4911:1986 for comprehensive definitions related to bituminous waterproofing and damp-proofing.

• Scope:
  Part 5 covers the Heat Resistance Test for bitumen felts, assessing their capacity to withstand heat without melting.

• Heat Resistance Test Procedure (Clause 5.3):

  • Samples are heated in a chamber for a specified period.
  • After heating, samples are visually inspected for signs of bitumen melting.
  • Reporting must include:
    • Date of testing
    • Sample details
    • Observations (presence/absence of melting)

• Related Parts in IS 13826:

  Part	Test Covered
  1	Breaking Strength Test
  2	Pliability Test
  3	Storage Sticking Test
  4	Pressure Head Test
  5	Heat Resistance Test (this part)
  6	Water Absorption Test
  7	Determination of Binder Content

• Rounding Off:
  Use IS 2:1960 rules for rounding numerical results to match the precision of specified values.

Summary Diagram: Heat Resistance Test Flow

flowchart TD
    A[Prepare Sample] --> B[Heat in Chamber for Specified Time]
    B --> C[Remove Sample]
    C --> D[Visual Inspection for Melting]
    D --> E{Melting Observed?}
    E -->|Yes| F[Report Sample Details & Melting]
    E -->|No| G[Report Sample Details & No Melting]

Note: For detailed definitions and terms, always consult IS 4911:1986 alongside IS 13826 Part 5.

IS 13826 Part 5: Apparatus & Heat Resistance Test Key Points

Apparatus & Procedure (Clause 5.2 & 5.3):

• Test Chamber: A heated chamber capable of maintaining the required temperature uniformly for 3 hours.
• Sample Suspension: Test pieces are suspended vertically by clips inside the chamber.
• Test Duration: 3 hours at specified temperature.
• Post-Test Examination: Visual check for any melting or deformation of the bitumen compound.

Reporting Requirements:

• Date of testing
• Sample details (type, size)
• Observations (signs of melting or damage)

Summary Table: Heat Resistance Test Procedure

Notes:

• The test evaluates thermal stability of bitumen felts.
• No melting or deformation should be observed to pass.
• Temperature specifics are per product or project requirements (not specified in excerpt).

flowchart TD
    A[Prepare Samples] --> B[Suspend Vertically by Clips]
    B --> C[Place in Heated Chamber]
    C --> D[Maintain Temp for 3 Hours]
    D --> E[Remove Samples]
    E --> F[Visual Inspection for Melting]
    F --> G[Record Observations & Report]

For detailed temperature and sample size, refer to IS 13826 Part 5 full text or related product standards IS 1322 and IS 7193.

IS 13826 Part 5 — Test Specimen Key Details

• Specimen Size:

  • Each test piece: 100 mm × 100 mm (Clause 5.1)
  • Minimum number of test pieces: 5 per sample

• Test Procedure (Clause 5.3):

  • Samples heated in a chamber for specified duration.
  • After heating, visually inspect for melting or deformation of bitumen.
  • Report to include:
    • Date of testing
    • Sample details
    • Observations (melting signs)

• Rounding Off:

  • Final test values rounded as per IS 2:1960 rules.

Summary Table of Test Specimen Requirements

Visual Test Flow (Mermaid Diagram)

flowchart TD
    A[Cut 5 specimens of 100x100 mm] --> B[Place in heating chamber]
    B --> C[Heat for specified duration]
    C --> D[Remove specimens]
    D --> E[Visual inspection for melting]
    E --> F{Melting observed?}
    F -- Yes --> G[Record failure]
    F -- No --> H[Record pass]
    G --> I[Report results]
    H --> I

This ensures consistent evaluation of heat resistance of bitumen felts per IS 13826 Part 5.

IS 13826 Part 5 (1994) — Heat Resistance Test Procedure Summary

Clause 5.3 Procedure:

• Samples of bitumen felt are placed in a heated chamber for a specified period.
• At the end of this period, samples are removed and visually examined for melting signs of the bitumen compound.

Reporting Requirements:

• Date of testing
• Details of the sample
• Observations on melting or deformation

Key Points:

Notes:

• This test assesses the heat resistance capacity of bitumen felts.
• Visual examination is the primary criterion—no numerical formulae are involved.
• Refer IS 4911:1986 for related terminology.

flowchart TD
    A[Prepare Sample] --> B[Place in Heated Chamber]
    B --> C[Heat for Specified Duration]
    C --> D[Remove Sample]
    D --> E[Visual Examination for Melting]
    E --> F[Record Date, Sample Details, Observations]

This simple procedure ensures bitumen felts meet heat resistance standards for waterproofing applications.

IS 13826 Part 5 - Observation and Reporting (Clause 5.3)

Procedure Summary:

• After the specified heating period, samples are removed from the heated chamber.
• Visual examination is conducted to detect melting signs of the bitumen compound.

Reporting Requirements:

Reports must include:

• Date of Testing
• Sample Details (type, batch, identification)
• Observations (presence or absence of melting, any deformation)

Key Points:

• No numerical formula is specified for observation; it is a qualitative visual check.
• The test assesses heat resistance by checking physical integrity post-heating.
• This ensures the bitumen felt meets durability under elevated temperature conditions.

Reporting Template Example:

flowchart TD
    A[Start Heating Period] --> B[Remove Sample from Heated Chamber]
    B --> C[Visual Examination]
    C --> D{Melting Observed?}
    D -->|No| E[Report: No Melting]
    D -->|Yes| F[Report: Melting Observed]
    E --> G[End]
    F --> G[End]

This simple visual check is critical for verifying the heat resistance of bitumen felts as per IS 13826 Part 5.

Rounding Off of Results — IS 13826 Part 5 (Clause 5.3 & related)

For reporting test results in IS 13826 (Part 5) — Heat Resistance Test of Bitumen Felt:

• Rounding off must follow IS 2:1960 "Rules for rounding off numerical values (revised)".
• The number of significant digits in the rounded result must match the number of significant digits in the specified value of the standard.
• Results should be reported with:
  • Date of testing
  • Sample details
  • Visual observations (e.g., signs of melting)

IS 2:1960 Rounding Rules (Summary)

Example

If specified value = 12.3 (3 significant digits), result 12.345 → round to 12.3

Reporting Format (Table)

flowchart TD
    A[Start Test] --> B[Heat Resistance Test]
    B --> C[Remove Sample]
    C --> D[Visual Examination]
    D --> E{Signs of Melting?}
    E -->|Yes| F[Record Observation]
    E -->|No| F
    F --> G[Round off results as per IS 2:1960]
    G --> H[Report Date, Sample Details, Observation]
    H --> I[End]

Summary: Use IS 2:1960 for rounding, maintain significant digits as per standard, and report test date, sample, and melting observations clearly.

IS 13826 Part 5: Committee Composition & Key Specifications

Committee Composition (Annex A)

• Chairman: Prof. M. S. Shetty (Personal Capacity, Pune)
• Members: Representatives from diverse organizations including:
  • Osnar Chemical Pvt Ltd, Bombay
  • National Test House, Calcutta
  • National Building Organization, New Delhi
  • Central Road Research Institute, New Delhi
  • Engineers India Ltd, New Delhi
  • Metro Railway, Calcutta
  • Polyseal India Engineering Centre, Bombay
  • Central Public Works Department
  • Army Headquarters, New Delhi
  • Overseas Water-Proofing Corporation Ltd, Bombay
  • Fosroc India Ltd, Bangalore
  • Building Materials & Technology Promotion Council, New Delhi
  • Bharat Petroleum Corporation Ltd, Bombay
  • B. G. Shirke & Co, Pune
  • Lloyd Bitumen Products Pvt Ltd, Calcutta
  • MES Builders Association of India, New Delhi
  • STP Ltd, Calcutta
  • MC-Bauchemic (India) Ltd, Bombay
  • Integrated Water-Proofing Ltd, Madras
  • Public Works Department, Govt of Tamil Nadu
  • Central Building Research Institute (CSIR), Roorkee
  • Projects and Development India Ltd, Dhanbad
  • BIS Director General (Ex-officio)

Testing Procedure (Clause 5.3)

• Sample Size: 100 × 100 mm test pieces, minimum 5 per sample (Clause 5.1)
• Testing: After heating, visually inspect for bitumen melting.
• Reporting:
  • Date of testing
  • Sample details
  • Observations

Summary Table: Committee Composition Snapshot

This committee ensures standardization and quality control in waterproofing materials per IS 13826 Part 5.