Hot Applied Sealing Compounds for Joints in Concrete- Specification

IS 1834 - Scope & Key Physical Requirements of Hot Applied Sealing Compounds

Scope (Clause 4.1)

• Specifies physical requirements for sealing compounds (Grades A & B) used in concrete joints.
• Ensures compounds are easy to apply, temperature-resistant, adhere well, and resist flow or loss of resiliency under weather variations.

Key Physical Requirements (Table 1)

Notes:

• Pour Point: Minimum temperature at which the compound flows readily.
• Flow Test: Assesses resistance to flow in hot weather.
• Penetration: Measures hardness/softness.
• Aviation Fuel Resistance: Ensures durability against kerosene-type fuels (IS: 1571-1982).

Summary Diagram of Properties

graph TD
    A[Sealing Compound] --> B[Pour Point ≤ 180°C]
    A --> C[Flow ≤ 5%]
    A --> D[Extensibility ≥ 6 mm]
    A --> E[Penetration 15-50 (1/10 mm)]
    A --> F[Aviation Fuel Resistance (Grade B)]
    F --> F1[Penetration Increase ≤ 15%]
    F --> F2[Mass Change ≤ 1%]

These criteria ensure effective sealing performance under varying environmental and service conditions.

IS 1834 - Application and Use: Key Specifications & Tests for Sealing Compounds

Physical Requirements (Clause 4.1, Table 1)

Application Notes (Clause 3.1.1)

• Grade A: For concrete structures not exposed to kerosene or petroleum oils.
• Grade B: Suitable where aviation fuel or petroleum exposure occurs.

Key Formula / Concept:

Flow Test % = (\frac{\text{Length of flow after heating}}{\text{Original length}} \times 100) ≤ 5%

Summary Diagram: Sealing Compound Selection

flowchart TD
    A[Sealing Compound Grade] --> B{Exposure Type}
    B -->|No petroleum| C[Grade A]
    B -->|Petroleum / Aviation Fuel| D[Grade B]
    C --> E[Concrete Structures]
    D --> F[Concrete + Fuel Exposure]

Use these physical tests and grade selection criteria to ensure durability and performance of sealing compounds in concrete structures as per IS 1834.

IS 1834: Grades of Sealing Compounds – Key Specifications

This standard defines two grades:

• Grade A (Ordinary)
• Grade B (Fuel Resistant)

Physical Requirements (Table 1)

Marking (Clause 6.1)

• Each container must be marked with grade and manufacturer's name/trademark.

Summary

• Grade A: Ordinary sealing compound.
• Grade B: Resistant to aviation fuel, tested for penetration increase and mass change after fuel immersion.
• Strict limits on flow, extensibility, penetration, and pour point ensure performance.

flowchart LR
    A[Sealing Compounds] --> B[Grade A (Ordinary)]
    A --> C[Grade B (Fuel Resistant)]
    C --> D[Aviation Fuel Resistance Tests]
    D --> E[Penetration Increase ≤ 15]
    D --> F[Mass Change ≤ 1%]

For detailed test procedures, refer to Appendices A–E and IS: 1203-1978.

IS 1834 - Physical Requirements for Sealing Compounds (Grades A & B)

Notes:

• Grade B is used where resistance to kerosene or petroleum oils is required (Clause 3.1.2).
• Testing procedures are detailed in respective appendices (A to E).
• Penetration test follows IS 1203:1978 (bituminous materials).
• Aviation fuel resistance per IS 1571:1982.

Summary:

• Ensure pour point ≤ 180°C for stability.
• Flow ≤ 5% to prevent excessive softening.
• Extensibility ≥ 6 mm for flexibility.
• Penetration between 15-50 (1/10 mm) for consistency.
• Grade B must resist kerosene with minimal penetration increase and mass change.

flowchart TD
    A[Sealing Compound] --> B[Physical Tests]
    B --> C[Pour Point ≤ 180°C]
    B --> D[Flow Test ≤ 5%]
    B --> E[Extensibility ≥ 6 mm]
    B --> F[Penetration 15-50 (1/10 mm)]
    B --> G[Aviation Fuel Resistance (Grade B)]
    G --> H[Penetration Increase ≤ 15]
    G --> I[Mass Change ≤ 1%]
``

IS 1834: Preparation of Test Samples – Key Points

1. Preparation of Test Samples (Clauses 2.1: D-2.1 & E-2.1)

• Samples must be prepared as per specified dimensions and conditions to ensure consistency.
• Test blocks are held 12 mm apart in the extension machine jig.
• The extension machine pulls the jig halves apart at a rate of 3.00 ± 0.01 mm/hour for at least 4 hours.
• The specimen between blocks must be surrounded by chopped ice during testing to maintain temperature.

2. Extension Machine Design (Clause 1.3: C-1.3)

• Jig clamps test blocks 12 mm apart.
• Controlled slow extension rate: 3.00 ± 0.01 mm/hour.
• Ice surrounding ensures thermal stability during the test.

3. Test Specimen Handling (Clause 4.3: E-4.3)

• Any movement of the container during needle penetration invalidates the test.
• Penetration tests can be combined with change in penetration tests (Appendix D).

4. Sampling Plan (Appendix F, Clause 5.1)

• Specifies sampling scale for hot applied sealing compounds.
• Ensures representative and statistically valid sample sizes.

Summary Table: Extension Machine Parameters

flowchart LR
    A[Test Sample Preparation] --> B[Clamp test blocks 12 mm apart]
    B --> C[Place specimen between blocks]
    C --> D[Surround specimen with chopped ice]
    D --> E[Pull jig halves apart at 3.00 ± 0.01 mm/hr]
    E --> F[Continue for at least 4 hours]

This ensures reliable and reproducible test results as per IS 1834.

IS 1834: Test Methods for Sealing Compounds (Grades A & B)

Key Physical Requirements & Test Methods (Table 1, Clause 4.1)

Notes:

• Pour point: Minimum temperature at which the compound flows uniformly (see Appendix A).
• Flow test: Measures hot weather flow resistance (Appendix B).
• Penetration test: Per IS 1203-1978, standard needle penetration method.
• Aviation fuel resistance: Evaluates durability after immersion in aviation fuel.

Summary Diagram of Test Flow

flowchart TD
    A[Sample Preparation] --> B[Pour Point Test (Appendix A)]
    B --> C[Flow Test (Appendix B)]
    C --> D[Extensibility Test (Appendix C)]
    D --> E[Penetration Test (IS 1203)]
    E --> F[Aviation Fuel Immersion (7 days)]
    F --> G[Aviation Fuel Resistance Tests (Appendices D & E)]

This framework ensures sealing compounds meet durability and performance standards under thermal and chemical exposure.

IS 1834: Sampling Plan & Criteria for Conformity

Sampling Plan (Clause 1.3 & Table 2)

• Lot Size vs Sample Size:

• Packages must be selected randomly per IS 4905-1968 to ensure unbiased sampling.

Criteria for Conformity (Clause 4.3)

• Discard any test if container moves during needle penetration.
• This test can be combined with change in penetration test (Appendix D).

Additional Notes

• Samples are tested per lot to verify conformity (Appendix F, Clause 1.2).

flowchart TD
    A[Lot Size] --> B[Determine Sample Size from Table 2]
    B --> C[Random Selection of Packages (IS 4905-1968)]
    C --> D[Test Samples for Penetration]
    D --> E{Container Movement?}
    E -- Yes --> F[Discard Test]
    E -- No --> G[Accept Test Result]
    G --> H[Check Conformity]

This ensures statistically valid sampling and reliable test results per IS 1834.

IS 1834: Marking and Packaging of Sealing Compounds

Marking (Clause 6.1 & 6.2)

• Each container must be marked with:
  • Grade of sealing compound (e.g., Grade A or B)
  • Manufacturer's name or trade-mark
• Optionally, the container may bear the ISI Certification Mark (Clause 6.2), subject to licensing under the Indian Standards Institution (Certification Marks) Act.

Packaging & Sampling (Clause 1.3.1)

• Packages are randomly selected for testing as per IS 4905-1968 to ensure unbiased sampling.

Key Physical Requirements (Clause 4.1, Table 1)

Notes:

• ISI Mark assures compliance with IS 1834 under strict inspection and quality control.
• Testing methods are detailed in appendices and relevant IS codes (e.g., IS 1203-1978 for penetration).

flowchart TD
    A[Sealing Compound Container] --> B{Marking}
    B -->|Grade + Manufacturer| C[Mandatory]
    B -->|ISI Certification Mark| D[Optional, License Required]
    A --> E[Packaging]
    E --> F[Random Sampling per IS 4905-1968]
    F --> G[Physical Tests]
    G --> H[Pour Point, Flow, Extensibility, Penetration]
    G --> I[Aviation Fuel Resistance]

This summary ensures compliance with IS

IS 1834: Determination of Pour Point for Joint Sealing Compounds

Key Definitions

• Pour Point: Lowest temperature at which the compound can be poured readily and uniformly (Clause A-1.1).

Procedure Summary (Clause A-2.2)

1. Heat 200 g of sample with gentle stirring in oil bath.
2. Bath temperature ≤ pour point + 70°C, max 250°C.
3. Add remaining 400 g in ~50 g increments, stirring continuously.
4. Heat and stir until sample attains fluid consistency to pour readily.
5. Pour specimens for other tests from this sample.

Reporting (Clause A-3.1)

• Report minimum temperature where material pours readily.
• Record time to reach this consistency.

Heating Limits (Appendix B, F-2.2)

• Do not heat sample > 20°C above pour point during melting.
• Continuous agitation required.
• Avoid reheating samples to prevent alteration.

Summary Table: Heating Limits for Pour Point Determination

flowchart TD
    A[Start: 200 g sample] --> B[Heat in oil bath ≤ Pour Point + 70°C]
    B --> C[Add 50 g increments of remaining 400 g]
    C --> D[Stir continuously, maintain temp]
    D --> E[Sample attains pourable consistency]
    E --> F[Pour specimens for testing]

This method ensures consistent determination of pour point as per IS 1834.

IS 1834 - Flow Test Method for Joint Sealing Compounds

Purpose

• Assess resistance of sealing compounds to flow at 45°C in hot weather.

Key Formula (Clause 4.1)

[ \text{Flow of compound, %} = \frac{W_2 - W_1}{W_2 - W_3} \times 100 ]

• (W_1) = Mass of mould + compound after test (g)
• (W_2) = Mass of mould + compound before test (g)
• (W_3) = Mass of empty mould (g)

Report mean of 3 tests; repeat if any deviate >10% from mean.

Physical Requirements (Table 1, Clause 4.1)

Test Setup (Clause 2.1 & Fig.1)

• Use 3 moulds, weigh empty (W_3), fill with compound, weigh (W_2).
• Heat at 45°C for specified time.
• Weigh after test (W_1).
• Calculate flow % using formula above.

flowchart LR
    A[Weigh empty mould (W3)] --> B[Fill with compound]
    B --> C[Weigh filled mould (W2)]
    C --> D[Heat at 45°C]
    D --> E[Weigh after test (W1)]
    E --> F[Calculate flow % = ((W2-W1)/(W2-W3))*100]

Summary:

• Flow test max allowable flow = 5% at 45°C.
• Use 3 replicates, average results.

IS 1834: Extensibility Test Procedure - Key Points

Test Setup (Clause 1.3 & 3.1)

• Initial gap between concrete blocks: 12 mm.
• Extension rate: 3.00 ± 0.01 mm per hour.
• Duration: At least 4 hours or until 6 mm extension is reached.
• Temperature: Specimen stored at 0℃ for 16-24 hours; test conducted at 0℃.
• Cooling: Test specimen surrounded by chopped ice during the test.

Specimen Preparation

• Specimen clamped rigidly in the extension machine.
• Clamp removed after positioning blocks 12 mm apart.
• Ice replenished as needed.
• Joint sealing compound applied with 1.5 mm excess on all four exposed faces before trimming flush.

Acceptance Criteria (Clause 3.1)

• Specimen must remain adhered to both blocks.
• No cavity > 40 mm² total area on any of the 4 exposed surfaces.
• Multiple cavities allowed if total area ≤ 40 mm².
• Failure modes: adhesion loss or rupture within sealing compound.

Reporting (Clause 4.1)

• Pass: Extended 6 mm at 0℃ without failure.
• Fail: Failure during extension at 0℃ by adhesion loss or rupture.

Summary Table of Parameters

flowchart LR
    A[Prepare Specimen] --> B[Store at 0℃ for 16-24 hrs]
    B --> C[Clamp in Extension Machine, Blocks 12 mm Apart]
    C --> D[Surround with Chopped Ice]
    D --> E[Extend at 3.00 ± 0.01 mm/hr for 6 mm]
    E --> F{Examine Sealing Compound}
    F -->|Pass| G

IS 1834: Resistance to Aviation Fuels - Change in Penetration

Key Specifications (Appendix D, Table 1)

Penetration Test Details (Clause 4.1 & IS 1203-1978)

• Penetration measured at 25℃, using 100 g load for 5 seconds
• Units: 1/10 mm
• Initial penetration range: 15 min to 50 max

Test Procedure Summary

• Immerse specimen in aviation fuel (per IS 1571-1982) for 7 days
• Measure penetration before and after immersion
• Calculate increase in penetration; must not exceed 15 units
• Measure mass change; must not exceed 1%

Important Notes

• Any movement during needle penetration invalidates test (Clause D-4.3)
• Extensibility minimum: 6 mm (Appendix C)
• Pour point max: 180℃ (Appendix A)
• Flow test max: 5% (Appendix B)

Formula for % Change in Mass:

[ \text{Change in Mass (%)} = \frac{(m_2 - m_1)}{m_1} \times 100 ]

• (m_1) = initial mass before immersion
• (m_2) = mass after 7 days immersion

flowchart TD
    A[Initial Penetration Test] --> B[Immersion in Aviation Fuel for 7 Days]
    B --> C[Measure Penetration After Immersion]
    B --> D[Measure Mass After Immersion]
    C --> E[Calculate Increase in Penetration (≤ 15)]
    D --> F[Calculate % Mass Change (≤ 1%)]
    E & F --> G{Pass/Fail Criteria}

This ensures sealing compounds maintain integrity against aviation fuel exposure per IS 1834.

IS 1834: Resistance to Aviation Fuels - Change in Mass

Key Specifications (Appendix E, Table 1)

• Max change in mass after 7 days immersion in aviation fuel: 1%
• Test temperature: Not less than 18℃
• Immersion duration: 7 days
• Aviation fuel volume: Approx. 25 ml in sealed container

Test Procedure (Clause 2.1.4)

• Flood container with aviation fuel to the top (~25 ml)
• Seal carefully, store at ≥18℃ for 7 days
• Measure mass change of specimen before and after immersion

Formula for % Change in Mass:

[ \text{Change in Mass (%)} = \frac{W_2 - W_1}{W_1} \times 100 ]

Where:

• ( W_1 ) = Initial mass of specimen
• ( W_2 ) = Mass after 7 days immersion

Related Physical Requirements (Table 1, Clause 4.1)

flowchart TD
    A[Initial Mass (W1)] --> B[Immerse in Aviation Fuel]
    B --> C[Store at ≥18℃ for 7 Days]
    C --> D[Measure Final Mass (W2)]
    D --> E[Calculate % Change in Mass]
    E --> F{Is Change ≤ 1%?}
    F -- Yes --> G[Pass]
    F -- No --> H[Fail]

Summary: The sealing compound must not gain or lose more than 1% mass after 7 days immersion in aviation fuel at ≥18℃, ensuring durability and fuel resistance.

IS 1834: Sampling Plan for Hot Applied Sealing Compounds (Appendix F, Clause 5.1)

• Scope: Sampling ensures representative testing of sealing compounds used in concrete joints (roads, bridges, runways).

• Sampling Procedure (Clause 5.1 & Appendix F):

  • Take samples from different containers/batches to represent the entire lot.
  • Samples must be heated and poured per Clause 2.2 (B-2.2) before testing.
  • Avoid any movement of the container during needle penetration test (Clause 4.3) to ensure valid results.

• Key Points:

  • Combine penetration test with change in penetration test (Appendix D) for efficiency.
  • Discard any test if container moves during needle penetration.

• Typical Sampling Scale:

  • Number of samples depends on lot size (not explicitly given in IS 1834, follow general IS sampling standards or contract specifications).

Summary Table: Sampling & Testing Steps

If you need detailed sample size tables or acceptance criteria, refer to IS 2500 or relevant quality control standards.

flowchart TD
    A[Batch of Sealing Compound] --> B[Take Representative Samples]
    B --> C[Heat & Pour Samples]
    C --> D[Penetration Test]
    D -->|No movement| E[Test Valid]
    D -->|Movement| F[Discard Test]
    E --> G[Check Conformity]

Note: Always follow the latest IS code edition and project specifications for sampling frequency and acceptance criteria.