IS 1580:1991 specifies requirements and test methods for bituminous compounds used for waterproofing and caulking in construction and industrial applications. It covers two grades of bituminous materials with different consistencies, suitable for cold application to seal leaks, joints, and crevices in roofs, pipes, steel plates, and precast concrete. This standard is essential for engineers and professionals involved in waterproofing, sealing, and protective coatings to ensure material quality and performance.
Overview
IS 1580:1991 specifies requirements and test methods for bituminous compounds used for waterproofing and caulking in construction and industrial applications. It covers two grades of bituminous materials with different consistencies, suitable for cold application to seal leaks, joints, and crevices in roofs, pipes, steel plates, and precast concrete. This standard is essential for engineers and professionals involved in waterproofing, sealing, and protective coatings to ensure material quality and performance.
Audience
Contents
Structure
IS 1580 - Scope & Key Specifications for Bituminous Compounds
Covers Grade 1 and Grade 2 bituminous compounds used for sealing and waterproofing with specific physical and chemical requirements.
| Characteristic | Grade 1 | Grade 2 | Test Method Reference |
|---|---|---|---|
| Water content (% mass, max) | 0.5 | 0.5 | IS 1211:1978 |
| Ash content (% mass, max) | 40 | 30 | IS 1217:1978 |
| Flow | Must satisfy flow test (Annex A) | Must satisfy flow test (Annex A) | Annex A |
| Flash point (°C, min) | 35 | 35 | IS 1209:1978 |
| Flexibility & adhesion | Must satisfy Annex B | Must satisfy Annex B | Annex B |
| Consistency (Penetration) | Annex C | ||
| - Before setting (1h) Min | 100 | 225 | Annex C |
| - After setting (24h) Min | 80 | 200 | Annex C |
Flow Test (Annex A):
Flexibility & Adhesion (Annex B):
Consistency (Penetration) (Annex C):
flowchart TD
A[Bituminous Compound]
IS 1580 - Key Specifications & Test Methods for Bituminous Compounds
| Characteristic | Grade 1 | Grade 2 | Test Reference |
|---|---|---|---|
| Water content (%) Max | 0.5 | 0.5 | IS 1211:1978 |
| Ash content (%) Max | 40 | 30 | IS 1217:1978 |
| Flow | Shall satisfy | Shall satisfy | Annex A |
| Flash point (°C) Min | 35 | 35 | IS 1209:1978 |
| Flexibility & adhesion | Shall satisfy | Shall satisfy | Annex B |
| Consistency (Penetration) Before setting (1h) Min | 100 | 225 | Annex C |
| Consistency After setting (24h) Min | 80 | 200 | Annex C |
flowchart TD
A[Prepare test film on steel panel] --> B{Test at 27±2°C for 5h}
B -->|No slip| C[Test at 60±
IS 1580: Definitions & Key Specifications Summary
| Characteristic | Grade 1 | Grade 2 | Test Method Ref. |
|---|---|---|---|
| Water content (% max) | 0.5 | 0.5 | IS 1211:1978 |
| Ash content (% max) | 40 | 30 | IS 1217:1978 |
| Flow | Shall satisfy | Shall satisfy | Annex A |
| Flash point (°C min) | 35 | 35 | IS 1209:1978 |
| Flexibility & adhesion | Shall satisfy | Shall satisfy | Annex B |
| Consistency (Penetration) | Before setting: 100 | 225 | Annex C |
| After setting: 80 | 200 |
flowchart TD
A[Bituminous Compound] --> B{Tests}
B --> C[Water & Ash Content]
B --> D[Flow Test]
B --> E[Flexibility & Adhesion]
B --> F[Consistency (Penetration)]
D --> D1[No slip at 27°C]
D --> D2[Max 6 mm slip at
IS 1580 - Material Grades & Composition for Bituminous Compounds
| Characteristic | Grade 1 (Max/Min) | Grade 2 (Max/Min) | Test Method Ref. |
|---|---|---|---|
| Water content (% by mass) | 0.5 (Max) | 0.5 (Max) | IS 1211:1978 |
| Ash content (% by mass) | 40 (Max) | 30 (Max) | IS 1217:1978 |
| Flash point (°C) | 35 (Min) | 35 (Min) | IS 1209:1978 |
| Consistency (Penetration) | Annex C | ||
| - Before setting (1 hr) | 100 (Min) | 225 (Min) | |
| - After setting (24 hr) | 80 (Min) | 200 (Min) | |
| Flow | Shall satisfy req. | Shall satisfy req. | Annex A |
| Flexibility & adhesion | Shall satisfy req. | Shall satisfy req. | Annex B |
Flow Test (Annex A):
Film (3 mm thick on steel panel) must not slip vertically at 27±2°C (5h) and slip ≤6 mm at 60±1°C (5h). Film remains plastic and adherent after 0°C for 1 hour.
Flexibility & Adhesion (Annex B):
Film must not crack or flake when bent over 25 mm diameter rod at 27±2°C after flow test treatments.
Consistency (Penetration) Test (Annex C):
Penetration measured by standard penetrometer with 150 g cone applied for 5 seconds.
flowchart TD
A[Bituminous
IS 1580: Clause 4.2.2 — Key Requirements for Bituminous Compounds
| Characteristic | Grade 1 | Grade 2 | Test Method Reference |
|---|---|---|---|
| Water content (% by mass) | Max 0.5 | Max 0.5 | IS 1211 : 1978 |
| Ash content (% by mass) | Max 40 | Max 30 | IS 1217 : 1978 |
| Flow | Must satisfy Annex A (Flow Test) | Must satisfy Annex A | Annex A |
| Flash point (°C) | Min 35 | Min 35 | IS 1209 : 1978 |
| Flexibility & adhesion | Must satisfy Annex B | Must satisfy Annex B | Annex B |
| Consistency (Penetration in 0.1 mm units) | Annex C | ||
| - Before setting (1 h) Min | 100 | 225 | Annex C |
| - After setting (24 h) Min | 80 | 200 | Annex C |
Annex A (Flow Test):
Annex B (Flexibility & Adhesion):
Annex C (Consistency Test):
flowchart TD
A[Prepare Bitumen Film] --> B[Flow
| Characteristic | Requirement | Test Method Reference |
|---|---|---|
| Water content | Max 0.5% by mass | IS 1211:1978 |
| Ash content | Max 40% (Grade 1), 30% (Grade 2) | IS 1217:1978 |
| Flash point | Min 35°C | IS 1209:1978 |
| Flow test | No slip at 27±2°C (5h); slip ≤ 6 mm at 60±1°C (5h) | Annex A (IS 1580) |
| Flexibility & adhesion | No cracking/flaing on bending over 25 mm rod | Annex B (IS 1580) |
| Consistency (Penetration) | Penetration by cone under 150g load for 5s | Annex C (IS 1580) |
IS 1580 Test Methods Summary for Bituminous Compounds
| Characteristic | Grade 1 | Grade 2 | Test Method Reference |
|---|---|---|---|
| Water content (%) max | 0.5 | 0.5 | IS 1211 : 1978 |
| Ash content (%) max | 40 | 30 | IS 1217 : 1978 |
| Flow | Satisfy requirement | Satisfy requirement | Annex A (Flow Test) |
| Flash point (°C) min | 35 | 35 | IS 1209 : 1978 |
| Flexibility & adhesion | Satisfy requirement | Satisfy requirement | Annex B (Flexibility & Adhesion Test) |
| Consistency (Penetration) | Annex C (Consistency Test) | ||
| - Before setting (1 h) | 100 | 225 | |
| - After setting (24 h) | 80 | 200 |
graph LR
A[Penetrometer] --> B[Standard Cone (150 g)]
B --> C[Sample Surface]
A --> D[Adjustable Horizontal Table]
A --> E[Release & Clamp Mechanism]
**Note
IS 1580: Marking and Packaging Key Points
Containers shall be marked with:
Optionally, containers may carry the Standard Mark (Clause 8.2).
| Characteristic | Grade 1 | Grade 2 | Test Method Reference |
|---|---|---|---|
| Water content, % max | 0.5 | 0.5 | IS 1211 : 1978 |
| Ash content, % max | 40 | 30 | IS 1217 : 1978 |
| Flow | Shall satisfy requirement | Shall satisfy requirement | Annex A (Flow Test) |
| Flash point, °C min | 35 | 35 | IS 1209 : 1978 |
| Flexibility and adhesion | Shall satisfy requirement | Shall satisfy requirement | Annex B (Flexibility Test) |
| Consistency (Penetration) | a) Before setting (1h): 100 | 225 | Annex C (Consistency Test) |
| b) After setting (24h): 80 | 200 |
Annex A (Flow Test): Film on steel panel (150×100×0.3 mm, 3 mm thick) should not slip vertically at 27±2°C for 5h; max slip 6 mm at 60±1°C for 5h; remain plastic and adherent at 0°C for 1h.
Annex B (Flexibility & Adhesion): Film must not crack or flake when bent over 25 mm diameter rod at 27±2°C after flow test treatments.
Annex C (Consistency Test): Penetration measured by standard pen
IS 1580: Storage and Keeping Quality of Bituminous Compounds
| Grade | Before Setting (1h) Min | After Setting (24h) Min |
|---|---|---|
| 1 | 100 | 80 |
| 2 | 225 | 200 |
flowchart LR
A[Sample Preparation] --> B[Fill Penetration Cup]
B --> C[Remove Air Pockets]
C --> D[Immerse in Water Bath 27±2°C, 1h]
D --> E[Place on Penetrometer Table]
E --> F[Lower 150g Cone for 5s]
F --> G[Read Penetration (tenths of mm)]
Summary: Store sealed in dry, normal temp conditions; test consistency via penetration after 1h and 24h at 27±2°C; ensure flow, flexibility, adhesion per Annexes; shelf life minimum 6 months.
Test Specimen:
Test Conditions & Requirements:
| Condition | Temperature | Duration | Requirement |
|---|---|---|---|
| Indoor vertical | 27 ± 2°C | 5 hours | No slip of film |
| Air-dry oven vertical | 60 ± 1°C | 5 hours | Slip ≤ 6 mm |
| Cold treatment | 0°C | 1 hour | Film remains plastic and firmly adherent |
flowchart TD
A[Prepare bitumen film on steel panel] --> B[Keep vertical at 27±2°C for 5h]
B -->|No slip| C[Keep vertical at 60±1°C for 5h]
C -->|Slip ≤ 6 mm| D[Cool at 0°C for 1h]
D -->|Film plastic & adherent| E[Test Passed]
For detailed flexibility, adhesion, and consistency tests, refer to Annex B and Annex C of IS 1580.
IS 1580: Flexibility and Adhesion Test Summary
| Characteristic | Grade 1 | Grade 2 | Method Reference |
|---|---|---|---|
| Flexibility and Adhesion | Shall satisfy requirement | Shall satisfy requirement¹ | Annex B |
¹ Test temperature: 10°C (stringent)
flowchart TD
A[Prepare Film on Steel Panel] --> B[Flow Test at 27°C & 60°C]
B --> C[Cold Treatment at 0°C for 1h]
C --> D[Bend Film over 25mm Rod at 27°C]
D --> E{Film Cracks or Flakes?}
E -- No --> F[Pass Flexibility & Adhesion Test]
E -- Yes --> G[Fail Test]
This test ensures the bituminous compound's durability and adhesion under thermal and mechanical stresses per IS 1580.
Test Principle:
| Parameter | Grade 1 (Min) | Grade 2 (Min) | Notes |
|---|---|---|---|
| Consistency before setting (1h) | 100 | 225 | Penetration in tenths of mm |
| Consistency after setting (24h) | 80 | 200 | |
| Cone weight | 150 ± 0.1 g | Brass cone with hardened tip | |
| Test temperature | 27 ± 2°C | ||
| Penetration time | 5 seconds |
flowchart TD
A[Prepare Specimen] --> B[Fill Penetration Cup]
B --> C[Remove Air Pockets]
C --> D[Immerse in Water Bath (27±2°C)]
D --> E[Wait 1 hour or 24 hours]
E --> F[Place Cone on Specimen Surface]
F --> G[Release Cone for 5 seconds]
G --> H[Read Penetration Depth]
H --> I{Consistency < 200?}
I -- Yes --> J[Take 3 readings at 120° apart and average]
I
Frequently Asked
Differences between Grade 1 and Grade 2 Bituminous Compounds (IS 1580):
| Aspect | Grade 1 | Grade 2 |
|---|---|---|
| Consistency & Application | Semistiff, smooth, homogeneous paste; applied by hand, trowel, spatula, or gun | Light consistency, homogeneous paste; applied by putty knife |
| Water Content (max % by mass) | 0.5 | 0.5 |
| Ash Content (max % by mass) | 40 | 30 |
| Flash Point (min °C) | 35 | 35 |
| Consistency (Penetration in dmm) | Before setting (1 h): ≥ 100; After setting (24 h): ≥ 80 | Before setting (1 h): ≥ 225; After setting (24 h): ≥ 200 |
| Flow, Flexibility & Adhesion | Must satisfy standard tests (Annex A & B) | Must satisfy standard tests (Annex A & B) |
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This helps select the proper grade based on application method and consistency needed.
According to IS 1580, the consistency of the bituminous compound is determined by the Penetration Test as described in Annex C:
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This test ensures the bituminous compound meets the required consistency for its intended waterproofing and sealing applications.
According to IS 1580, Clause 4.2.2, Table 1 for Bituminous Compounds:
| Characteristic | Grade 1 (Max %) | Grade 2 (Max %) | Test Method |
|---|---|---|---|
| Water content | 0.5% | 0.5% | IS 1211 : 1978 |
| Ash content | 40% | 30% | IS 1217 : 1978 |
These limits ensure the compound's quality and performance in various applications such as roofing and sealing.
This is critical for maintaining adhesion, flexibility, and durability of bituminous compounds.
According to IS 1580 Clause 4.3, to maintain the bituminous compound's properties:
Storage Conditions:
Shelf Life:
Sampling & Testing:
Store bituminous compounds dry, sealed, at ambient temperature to ensure quality for 6+ months.
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IS 1580 Bituminous Compound Applications
This bituminous compound, suitable for cold application, is used extensively for:
Key features:
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This compound is versatile for sealing and waterproofing in construction and industrial applications.
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