bitumen felts for waterproofing and damp-proofing

IS 1322: Scope - Key Formulas, Tables, and Specifications

Scope Summary

IS 1322 covers specifications for bitumen felts used in waterproofing and damp-proofing applications, including marking, composition, testing, and quality control.

Key Specifications

• Marking (Clause 10.2): Each package must be marked with:

  • Manufacturer's name
  • Type & grade of bitumen felt
  • Roll dimensions (length, width) & weight
  • Batch number & manufacture date

• Composition & Weight (Clause 5.4, Table 1):

Testing Requirements (Table 2)

IS 1322 Key References, Formulas, and Tables Summary

1. Marking Requirements (Clause 10.2)

Each bitumen felt package must be marked with:

• Manufacturer's name/source
• Type and grade of bitumen felt
• Length, width, weight of roll
• Batch number (coded) and manufacture date

2. Minimum Weight of Bitumen Felt (Table 1, Clause 5.4)

Notes:

• Untreated base weight is in dry condition.
• Includes mica dusting powder (1.2 kg min) except Type 1.

3. Bitumen Felt Test Requirements (Table 2, Clauses 6 & 8)

IS 1322: Classification of Bitumen Felts for Waterproofing & Damp-proofing

1. Types of Bitumen Felt (Clause 3):

• Type 1: Fibre Base Underlay
• Type 2: Fibre Base Self-finished Felt
• Type 3: Hessian Base Self-finished Felt (Grades 1 & 2)

2. Composition & Minimum Weights (Table 1, Clause 5.4):

Notes:

• Untreated base weight for fibre base felts is dry weight; for hessian base, per IS 2818 (Part 2):1971.
• Total weight includes mica dusting powder (min 1.2 kg except Type 1).

3. Mechanical & Performance Requirements (Table 2):

IS 1322: Key Specifications for Base Fabrics

1. Base Fabric Types (Clause 4.1)

• Fibre-Base Felt (4.1.1):

  • Blend of vegetable and/or animal fibres.
  • Ash content on incineration ≤ 10% of original weight.

• Hessian Base Fibre (4.1.2):

  • Must conform to Type II Hessian as per IS 2818 (Part 2): 1971.

2. Minimum Weight of Bitumen Felt (Table 1, Clause 5.4)

Notes:

• Untreated base weight is dry weight for fibre base; for hessian base, as per IS 2818 (Part 2): 1971.
• Total weight includes mica dusting powder (~1.2 kg minimum) except for Type 1 underlay.
• Adjust weights if other mineral powders are used (refer Clause 4.4.2).

This table and clauses ensure proper composition and minimum weights for durability and performance of bitumen felts with specified base fabrics.

IS 1322: Manufacture of Bitumen Felt - Key Specifications & Table

Clause 5.4 & Table 1: Minimum Weight of Bitumen Felt Ingredients (per 10 m²)

Notes:

• Untreated base weight is dry weight (fibre base) or per IS 2818 (Part 2) for hessian.
• Total weight includes minimum 1.2 kg mica dusting powder (except Type 1).
• Adjust weights if other mineral powders used (per Clause 4.4.2).

Testing (Clause 9.1.3.2)

• Number of rolls tested for strength, pliability, heat resistance, etc., per Table 3.
• Test samples cut as per Fig. 1 layout.

Marking (Clause 10.2)

Each roll/package must be marked with:

• Manufacturer's name
• Type & grade of felt
• Length, width, weight
• Batch number & manufacture date

This ensures quality control and traceability in manufacturing bitumen felts as per IS 1322.

IS 1322: Bituminous Saturant and Coatant Specifications

1. Bituminous Saturant (Clause 4.2)

• Typically consists of bitumen meeting IS 702:1988.
• May include admixture of bitumen per IS 73:1992.
• Used to impregnate felts for waterproofing.

2. Bituminous Coatant Composition (Clause 4.3.1)

• Bitumen conforming to IS 702:1988 ± IS 73:1992.
• Inert, water-insoluble fine mineral filler:
  • 100% passing 150 micron sieve.
  • 95% passing 75 micron sieve (per IS 460 Part 1:1978).
• Alternatively, inert, water-insoluble fibrous mineral filler.
• Filler content ≤ 42% by weight of coatant.
• Minimum coatant weight as per Table 1 (not provided here).

3. Bituminous Coatant Properties (Clause 4.3.2)

• Coatant must pass:
  • High-temperature storage test.
  • Low-temperature pliability test.

Summary Diagram: Coatant Composition

graph LR
A[Bituminous Coatant] --> B[Bitumen (IS 702 ± IS 73)]
A --> C[Inert Mineral Filler]
C --> D[Fine mineral filler (100% <150μm, 95% <75μm)]
C --> E[Fibrous mineral filler]
A --> F[Filler ≤ 42% wt]

Note: Refer to IS 1322 Table 1 for minimum coatant weights.

IS 1322: Other Requirements of Bitumen Felts

Key Specifications & Tables

1. Total Bitumen Content (Clause 7.2 & Table 1)

Minimum bitumen content (kg) per 10 m² of finished felt:

• Untreated base weight is in dry condition.
• Mica dusting powder allowance: 1.2 kg minimum (except Type 1).
• For other mineral powders, adjust weights based on Clause 4.4.2.

2. Composition of Coatant (Clause 4.3.1)

• Bitumen must conform to IS 702:1988 or IS 73:1992.
• Mineral filler must be inert, water-insoluble, passing:
  • 100% through 150 micron sieve
  • 95% through 75 micron sieve (IS 460 Part 1:1978)
• Inert filler ≤ 42% by weight of coatant.

Summary

• Ensure bitumen content meets minimum weights from Table 1.
• Use specified bitumen and filler quality.
• Include mica dusting powder weight where applicable.

flowchart LR

IS 1322 - Testing Methods: Key Formulas, Tables & Specifications

1. Number of Rolls for Testing (Clause 9.1.3.2 & Table 3 col 4)

• Rolls tested for:
  • A, B: Breaking Strength
  • C, D: Pliability
  • E: Storage Sticking
  • F: Heat Resistance
  • G: Pressure Head
  • H: Water Absorption
  • K: Binder Content

2. Test Specimen Cutting (Clause 9.1.3.3 & Fig.1)

• Specimens cut as per Fig.1 layout from each sample roll.

3. Requirements for Bitumen Felts (Table 2)

4. Test Descriptions (Referenced IS 13826 Parts 1-7)

• Breaking Strength: IS 13826 (Part 1)
• Pliability & Storage Sticking: IS 13826 (Parts 2 & 3)
• Pressure Head: IS 13826 (Part 4)
• Heat Resistance & Water Absorption: IS 13826 (Parts 5 & 6)
• Binder Content: IS 13826 (Part 7)

5. Marking on Packages (Clause 10.2)

• Manufacturer source
• Type

IS 1322: Sampling and Criteria of Conformity

Sampling (Clause 9.1.3.2 & Table 3)

• Sample size depends on lot size.
• Permissible defective rolls indicate acceptance criteria.
• Sub-sample size is for detailed tests.

Criteria for Conformity (Clause 9.1.4)

• A lot is accepted if the number of defective rolls ≤ permissible defective rolls.
• Inspection and tests are performed on selected samples (Clause 9.1.1.1).

Summary:

• Select sample size based on lot size (see table).
• Test sub-samples as specified.
• Accept lot if defective rolls ≤ permissible limit.

This ensures quality compliance per IS 1322 standards.

IS 1322: Packing and Marking - Key Points

Packing (Clause 10)

• Rolls of bitumen felt must be packed to prevent damage during transport and storage.
• Test specimens are cut as per Fig. 1 layout for quality checks (breaking strength, pliability, etc.).
• Number of rolls tested per Table 3, Col 4 (Clause 9.1.3.2).

Marking (Clause 10.2)

Each package must be legibly and indelibly marked with:

• Manufacturer's name or source
• Type and grade of bitumen felt
• Length, width, and weight of the roll
• Batch number (code) and date of manufacture

Relevant Test Parameters (from Table 2 & Clause 9.1.3.2)

Typical Test Piece Layout (Fig. 1)

graph TD
  A[Roll] --> B[Test Pieces A, B (Breaking Strength)]
  A --> C[Test Pieces C, D (Pliability)]
  A --> D[Test Piece E (Storage Sticking)]
  A --> E[Test Piece F (Heat Resistance)]
  A --> F[Test Piece G (Pressure Head)]
  A --> G[Test Piece H (Water Absorption)]
  A --> H[Test Piece K (Binder Content)]

Summary

• Packing ensures protection; marking ensures traceability.
• Tests verify mechanical and durability properties.
• Compliance with IS 1322 ensures quality bitumen felt rolls for waterproofing.

For detailed test methods, refer to IS 13826 parts 1-7.

IS 1322 - Committee Composition: Key Specifications & Tables

1. Committee Composition (Clause 5.4)

• The committee oversees bitumen felt quality and testing adherence.
• Composition details are implicitly linked to quality control and sampling (Clauses 9.1.2, 9.1.3, 9.1.4).

2. Minimum Weight of Bitumen Felt (Clause 5.4, Table 1)

• Notes:
  • Untreated base weight is dry condition (IS 2818 Part 2 for hessian).
  • Mica dusting powder (min 1.2 kg) included except for Type 1.
  • Adjust weights if other mineral powders are used.

3. Sampling & Quality Control (Clause 9.1.3.2, Table 3)

IS 1322: List of Referred Indian Standards (Annex B)

IS 1322 references key Indian Standards essential for bitumen felts specification and testing:

Key Points:

• These standards cover material specifications, test methods, and fabric requirements for bitumen felts.
• Testing includes penetration, softening point, strength, water absorption, and binder content.
• IS 13826 is critical for detailed test methods on bitumen felts (7 parts).

Summary Diagram of Reference Flow

graph TD
    A[IS 1322 Bitumen Felts] --> B[IS 73 Paving Bitumen]
    A --> C[IS 702 Industrial Bitumen]
    A --> D[IS 460 Test Sieves]
    A --> E[IS 1203 Penetration Test]
    A --> F[IS 1205 Softening Point]
    A --> G[IS 13826 Bitumen Felt Tests]
    G --> G1[Breaking Strength]
    G --> G2[Pliability]
    G --> G3[Heat