Ceramic Tiles - Methods of the test, Sampling and Basis of Acceptance, Part 8: Determination of chemical resistance - Glazed tiles (see IS 13630: Parts 1 to 15)

IS 13630 Part 8: Scope Summary

• Scope Definition: This part of IS 13630 deals with specific requirements and guidelines for testing, analysis, and compliance related to structural elements (typically steel structures or components, depending on the full standard context).

• Rounding Off Rule:
  As per IS 2:1960, all final values (test or calculated) must be rounded off to the same number of significant digits as specified in the standard.

• Key Specification:

  • Final results must comply with the rounding rules to ensure consistency.
  • The standard builds upon and references related IS codes for comprehensive guidance.

Important Notes:

• Since the Scope clause itself does not provide formulas or tables, refer to subsequent clauses in IS 13630 Part 8 for detailed formulas or testing procedures.
• For rounding off values:
  Example: If specified value = 12.345 (5 significant digits), then the result should be rounded to 5 significant digits.

Rounding Off Example (IS 2:1960):

If you need formulas or tables related to structural strength, load combinations, or material properties, please specify the exact clause or topic.

IS 13630 Part 8 primarily references other standards and general rules for rounding numerical values, without specific formulas or tables.

Key Points from IS 13630 Part 8:

• References Used: The standard draws extensively from other IS codes for formulation.
• Rounding Off Rules:
  • Follow IS 2:1960 for rounding numerical values.
  • The number of significant digits in the rounded value must match that of the specified value.

IS 2:1960 Rounding Summary:

Practical Implication:

• When reporting test or analysis results per IS 13630 Part 8, round results as per IS 2:1960 to maintain consistency and accuracy.

flowchart TD
    A[Test/Analysis Result] --> B{Compare with Specified Value}
    B --> C[Round off per IS 2:1960]
    C --> D[Final Reported Value]

No direct formulas or tables are provided in this part; it serves as a procedural and referencing guideline.

IS 13630 Part 8: Terminology and Definitions

This part primarily aligns with ISO 13006:1998 for ceramic tiles terminology, ensuring consistency in classification and characteristics.

Key Points:

• Terminology follows ISO 13006:1998, defining tile types, sizes, and surface finishes.
• Rounding off test results must comply with IS 2:1960:
  • Round to the same number of significant digits as specified values.
  • Ensures uniformity in reporting test results.

Typical Definitions Covered:

• Ceramic Tiles: Sintered products made from clay or other inorganic materials.
• Porcelain Tiles: Tiles with water absorption ≤ 0.5%.
• Glazed Tiles: Tiles with a glassy coating fused to the surface.
• Rectified Tiles: Tiles with mechanically finished edges for tight joints.

No specific formulas or tables are given in this clause, but adherence to ISO 13006 ensures standardized classification and marking.

flowchart TD
    A[IS 13630 Part 8] --> B[Terminology & Definitions]
    B --> C[Based on ISO 13006:1998]
    B --> D[Rounding per IS 2:1960]
    C --> E[Tile Types]
    C --> F[Classification]
    C --> G[Characteristics]

For detailed definitions, refer directly to ISO 13006:1998 and rounding rules in IS 2:1960.

IS 13630 Part 8: Test Solutions Key Points

1. Test Solution Composition (Clause 1.33)

• Standard cleaning agent: 100 g contains 70 g dry substance.
• Use 10 g dry substance per litre in solution.
• Prepare test solution immediately before use.

2. Number of Test Specimens (Clause 6.2)

• Use 5 specimens per test solution.

3. Test Duration (Clause 3.3)

• For hydrochloric acid and potassium hydroxide resistance, test period is 7 days.

Summary Formula for Test Solution Preparation:

[ \text{Test Solution} = 7% \text{ Sodium silicate} + 30% \text{ Sodium oleate soap} + 23% \text{ Water} ]

Use immediately at 10 g dry substance/L concentration.

flowchart LR
    A[Prepare Test Solution] --> B[Sodium silicate 7%]
    A --> C[Sodium oleate soap 30%]
    A --> D[Water 23%]
    B & C & D --> E[Mix Immediately]
    E --> F[Use 10 g dry substance/L]
    F --> G[Test 5 Specimens]
    G --> H[Test Duration: 7 days (acid/alkali)]

This ensures consistent and standardized testing of material resistance per IS 13630 Part 8.

IS 13630 Part 8: Test Specimen Preparation Summary

Key Specifications (Clauses 6.1 - 6.3)

• Size of Test Specimens (6.1):

  • Use whole tiles or parts of tiles.
  • Specimens must be undamaged.

• Number of Specimens (6.2):

  • Use 5 specimens per test solution.

• Surface Preparation (6.3):

  • Clean specimen surfaces thoroughly with a suitable solvent (e.g., methanol).
  • Exclude specimens with surface defects from testing.

Additional Equipment (Clause 5.5)

• Use a 40 W inside white electric lamp (e.g., siliconized) for illumination during tests.

Summary Table

This ensures repeatability and accuracy in the test results by standardizing specimen quality and preparation.

IS 13630 Part 8: Number of Test Specimens

• Clause 6.2:

  • Use five (5) test specimens for each test solution to ensure reliable and consistent results.

• Clause 6.1 (Specimen Size):

  • Specimens should be undamaged whole tiles or parts of tiles as per test method 3.2.

• Additional Notes:

  • The test results must be rounded off according to IS 2:1960 rules, maintaining the same number of significant figures as specified in the standard.

Summary Table

This ensures statistical validity and uniformity in tile testing under IS 13630 Part 8.

IS 13630 Part 8: Test Methods - Key Points

• Test Specimens: No specific clause details specimen preparation; however, test results must comply with IS 2:1960 for rounding off numerical values, maintaining the same significant figures as specified.

• Electric Lamp Specification: Clause 5.5 requires a 40 W inside white siliconized electric lamp for testing illumination or related tests.

• Testing Procedure Reference: Clause 7.1.2 mandates testing according to Clause 3.2 (not detailed here), implying adherence to prescribed test conditions and methods.

Important Notes on Test Methods:

General Rounding Rule (IS 2:1960):

If the specified value has n significant digits, the test result must be rounded to n digits:

Example:  
Specified value = 12.3 (3 significant digits)  
Test result = 12.345 → Rounded to 12.3

If you need detailed formulas or tables for specific tests (e.g., mechanical, electrical), please specify the test type.

IS 13630 Part 8: Classification of Results

1. Classification by Reflection (Clause 7.2.4.5)

• Class C: Reflection is blurred but visible.
• Class D: Reflection disappears completely.

2. Classification by Staining Test (Clause 8.1.1, Table 1)

3. Classes of Resistance (Clause 8.2.1.1)

• AA: Resistant (highest resistance)
• A: Less resistant than AA but more than B
• B: Less resistant than A but more than C
• C: Less resistant than B
• D: Not resistant (lowest resistance)

Summary Diagram

flowchart LR
    A[AA - Most Resistant]
    B[A - Less than AA]
    C[B - Less than A]
    D[C - Less than B]
    E[D - Not Resistant]

    A --> B --> C --> D --> E

Use these classifications to record test results for chemical resistance, staining, and reflection properties of glazes.

IS 13630 Part 8: Test Report - Key Points

• Test Specimens & Conditions:
  Clause 5.5 specifies use of a 40 W inside white electric lamp (siliconized) as a standard light source during testing.

• Rounding Off Results:
  Per Clause 6, test results must be rounded according to IS 2:1960 rules, maintaining the same number of significant figures as the specified standard value.

• Application of Test Solution:
  Clause 7.1 and 7.1.2 reference applying test solutions per Clause 3.2, ensuring consistent test conditions.

Important Notes for Test Reports:

Rounding Rule Summary (IS 2:1960):

• If the digit to be dropped is <5, leave the last retained digit unchanged.
• If digit = 5 followed by zeroes or no digits, round last retained digit to nearest even number.
• If digit >5, increase last retained digit by 1.

flowchart TD
    A[Test Specimen Preparation] --> B[Apply Test Solution (Clause 3.2)]
    B --> C[Illuminate with 40 W Siliconized Lamp]
    C --> D[Perform Test & Record Data]
    D --> E[Round Off Results (IS 2:1960)]
    E --> F[Prepare Test Report]

This ensures uniformity and reliability in test reporting per IS 13630 Part 8.

IS 13630 (Part 8): 2006 focuses on assessment procedures for structural elements, with key references to Fig. 2 for evaluation criteria.

Key Points from Clauses 8.2.1 & 8.2.2:

• Clause 8.2.1:
  Assessment in accordance with Fig. 2 implies using a predefined graphical or tabular method to evaluate structural capacity or damage levels.
  Typically involves:

  • Load vs. deformation curves
  • Damage indices
  • Safety margins

• Clause 8.2.2:
  Assessment not in accordance with Fig. 2 requires alternative methods, often more detailed or case-specific, such as:

  • Nonlinear analysis
  • Advanced material behavior models
  • Customized damage evaluation

Typical Formulas & Tables (Generalized from IS 13630 series):

Typical Figures (Fig. 2):

• Graph showing damage states vs. displacement or load
• Zones indicating safe, repairable, or unsafe conditions

graph LR
A[Load Applied] --> B[Displacement Response]
B --> C{Compare with Fig. 2}
C -->|Within Limits| D[Safe/Repairable]
C -->|Exceeds Limits| E[Unsafe - Detailed Assessment]

For exact tables and figures, refer directly to IS 13630 (Part 8) Annexes which provide detailed graphical criteria and numerical thresholds.