quick setting lime pozzolana mixture

IS 10772 - Scope: Key Specifications & Tables

This standard covers quick setting lime pozzolana mixtures with types 1, 2, and 3 classified by lime reactivity (70, 50, 30 kgf/cm² respectively).

1. Physical Requirements (Clause 6.1, Table 2)

2. Chemical Requirements (Clause 5.1, Table 1)

IS 10772: Definitions & Key Specifications Summary

1. Definitions

• As per Clause 2.1, definitions follow IS 6508:1972 (Glossary of terms relating to building lime).

2. Physical Requirements (Clause 6.1, Table 2)

• Note: Types 1, 2, and 3 correspond to pozzolana with lime reactivity values of 70, 50, and 30 kgf/cm² respectively.

3. Chemical Requirements (Clause 5.1, Table 1)

| Characteristic | Requirement | Test Method Reference | |-----------------------------|-------------

IS 10772: Manufacture - Key Specifications & Tables

1. Chemical Requirements (Table 1, Clause 5.1)

2. Physical Requirements (Table 2, Clause 6.1)

IS 10772: Classification of Pozzolana Based on Physical & Chemical Requirements

1. Classification Types (Clause 4.1)

• Type 1, Type 2, Type 3 — classified by physical properties and lime reactivity:
  • Type 1: Lime reactivity ≥ 70 kgf/cm²
  • Type 2: Lime reactivity ≥ 50 kgf/cm²
  • Type 3: Lime reactivity ≥ 30 kgf/cm²

2. Physical Requirements (Table 2, Clause 6.1)

3. Chemical Requirements (Table 1, Clause 5.1)

IS 10772: Chemical Requirements Summary

Key Chemical Requirements (Clause 5.1, Table 1)

Notes:

• Available lime ensures sufficient hydraulic activity.
• Limits on CO₂ and MgO control durability and prevent excessive expansion.
• Sulphate content controls sulfate attack risk.
• Free moisture and loss on ignition affect material stability and quality.

References:

• IS 1514: Methods for quick and hydrated lime.
• IS 6932: Tests for building limes.
• IS 1727: Chemical analysis methods.
• IS 4098: Lime-pozzolana mixtures.

If needed, I can also provide physical requirements or testing procedures.

IS 10772: Physical Requirements for Pozzolanic Materials (Clause 6.1, Table 2)

Notes:

• Types 1, 2, and 3 correspond to lime reactivity values of 70, 50, and 30 kgf/cm² respectively.
• All physical tests refer to IS 4031-1968 methods.

Summary Diagram of Physical Requirement Checks

flowchart TD
    A[Start: Sample Pozzolana] --> B[Fineness Test (≤5% residue)]
    B --> C[Setting Time Test]
    C --> D{Initial ≥0.5 hr?}
    D -->|Yes| E{Final ≤24 hr?}
    D -->|No|

IS 10772: Storage & Specifications Summary

Storage (Clause 7.1)

• Store the mixture in a weather-tight building.
• Ensure easy access for inspection and identification.
• Protect from dampness to minimize deterioration.

Key Physical Requirements (Clause 6.1, Table 2)

Note: Types 1, 2, 3 correspond to lime reactivity values of 70, 50, and 30 kgf/cm² respectively.

Chemical Requirements (Clause 5.1, Table 1)

IS 10772: Packaging and Delivery - Key Specifications

Packaging (Clause 8.1 & 8.3)

• Bag Types: Jute, multi-ply paper, HDPE, or cloth bags.
• Marking: Manufacturer's name/trade-mark, type, and net mass.
• Bag Condition: Must be in good condition at delivery.
• Net Mass per Bag: 50 kg ± 2.5%.

Physical Requirements (Clause 6.1, Table 2)

Notes:

• Types 1, 2, and 3 correspond to lime reactivity values of 70, 50, and 30 kgf/cm² respectively.
• Sampling (Clause 9.2): Test individual samples for MgO, CO₂, and water retention; composite samples for other tests.

Summary Diagram: Packaging & Delivery Flow

flowchart TD
    A[Manufacture Lime Pozzolana Mixture]
    B[Pack

IS 10772: Sampling and Criteria for Conformity

Key Specifications:

• Bag net mass: 50 kg ± 2.5% (Clause 8.3)
• Sampling & Inspection: As per IS 3535-1966 (Clause 9.1), except 5.8.1.
• Sample Types (Clause 9.2):
  • Individual samples: Tested for MgO, CO₂, and water retention.
  • Composite samples: Tested for all other requirements.

Sampling & Testing Summary

Criteria for Conformity:

• Tests must conform to requirements in columns 3 to 5 of Table 2 (Clause 6.1).
• Process and lot inspection follow IS 3535 procedures.

Sampling Procedure (per IS 3535):

• Samples taken randomly from bags in the lot.
• Composite samples made by mixing individual samples.
• Testing ensures uniformity and compliance.

Tolerance Formula for Bag Weight:

[ \text{Permissible weight range} = 50 \text{ kg} \pm (2.5% \times 50) = 50 \pm 1.25 \text{ kg} ]

flowchart TD
    A[Lot of Bags] --> B{Sampling}
    B --> C[Individual Samples]
    B --> D[Composite Sample]
    C --> E[Test MgO, CO₂, Water Retention]
    D --> F[Test Other Properties]
    E & F --> G{Conformity Check}
    G -->|Pass| H[Accept Lot]
    G -->|Fail| I[Reject Lot]

Summary: IS 10772 mandates specific sampling methods aligned with IS 3535,

IS 10772: Inspection and Testing Key Points

1. Inspection Requirements (Clause 9.1)

• Process and lot inspection as per IS 3535-1966, except clause 5.8.1.
• Sampling and testing follow Methods of sampling hydraulic cements.

2. Physical Requirements (Clause 6.1, Table 2)

Note: Type 1, 2, 3 correspond to lime reactivity values of 70, 50, and 30 kgf/cm² respectively.

3. Chemical Requirements (Clause 5.1, Table 1)