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IS 12330:1988 is the Indian Standard (BIS) for sulphate resisting portland cement - specification. This standard lays down the manufacturing and testing specifications for Sulphate Resisting Portland Cement (SRPC). It defines the chemical composition and physical properties required for cement intended for concrete structures subjected to sulphate attack, such as those in marine environments, foundations in aggressive soils, or wastewater facilities.
Specifies requirements for sulphate resisting portland cement suitable for use in structures exposed to sulphate attack.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! SRPC generally exhibits slower strength gain compared to Ordinary Portland Cement (OPC), especially at early ages (3 and 7 days). This must be accounted for in project timelines and formwork stripping schedules.
! Due to its low C3A content, SRPC has a lower heat of hydration, which is beneficial for mass concrete pours to control thermal cracking.
! Using SRPC does not eliminate the need for dense, impermeable, and well-cured concrete. Proper mix design and workmanship are still crucial for overall durability.
Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.
cementsulphate resisting portland cementconcrete
International Equivalents
Similar International Standards
ASTM C150/C150M-22ASTM International, USA
HighCurrent
Standard Specification for Portland Cement
Type V cement specified within this standard is for high sulphate resistance, directly aligning with IS 12330's purpose.
EN 197-1:2011European Committee for Standardization (CEN), Europe
HighCurrent
Cement - Part 1: Composition, specifications and conformity criteria for common cements
Defines sulphate-resisting Portland cements (e.g., CEM I-SR 3) based on low C3A compositional requirements.
AS 3972:2010Standards Australia, Australia
HighCurrent
General purpose and blended cements
Specifies Type SR (Sulphate Resisting) cement, which is formulated for high resistance to sulphate attack.
BS 4027:1996British Standards Institution (BSI), UK
HighWithdrawn
Specification for sulphate-resisting Portland cement
Was the dedicated British standard for SRPC before harmonization with European standards.
Key Differences
≠IS 12330 specifies a single grade with minimum 28-day compressive strength of 33 MPa. In contrast, EN 197-1 uses a strength class system (e.g., 32.5, 42.5, 52.5) with both minimum and maximum 28-day strength limits.
≠The sulphate expansion test method and limit differ. IS 12330 requires expansion to be ≤ 0.5% at 14 days per IS 4031 (Part 10), while ASTM C150 for Type V requires expansion ≤ 0.040% at 14 days per ASTM C452, a different test procedure.
≠IS 12330 requires the sum 2(C3A) + C4AF to be ≤ 25% for all SRPC. ASTM C150 only imposes a similar requirement (C4AF + 2(C3A) ≤ 25%) for Type V cement when the C3A content is between 4% and 5%.
≠While IS 12330 specifies a single C3A limit of ≤ 5%, EN 197-1 allows for different levels of sulphate resistance, with some national standards specifying stricter limits like C3A ≤ 3% for high resistance (SR 3) or C3A = 0% for very high resistance (SR 0).
Key Similarities
≈The fundamental principle for achieving sulphate resistance in IS 12330, ASTM C150 (Type V), and EN 197-1 (SR cements) is the same: strictly limiting the Tricalcium Aluminate (C3A) content.
≈Both IS 12330 and ASTM C150 (for all types) specify an identical maximum limit of 6.0% for Magnesium Oxide (MgO) content to ensure long-term volume stability and prevent unsoundness.
≈IS 12330 and EN 197-1 both utilize the Le Chatelier test for determining cement soundness and specify the exact same maximum expansion limit of 10 mm.
≈All equivalent standards place strict controls on the Sulphur Trioxide (SO3) content to control setting times and prevent internal sulphate expansion, with very similar maximum limits (typically 2.3% - 3.0%).
Parameter Comparison
Parameter
IS Value
International
Source
Tricalcium Aluminate (C3A), max
5.0%
5.0%
ASTM C150/C150M-22 (Type V)
Compressive Strength, 28 days, min
33 MPa
≥ 42.5 MPa & ≤ 62.5 MPa (for class 42.5 N)
EN 197-1:2011
Magnesium Oxide (MgO), max
6.0%
6.0%
ASTM C150/C150M-22
Soundness (Le Chatelier Expansion), max
10 mm
10 mm
EN 197-1:2011
Initial Setting Time, min
30 minutes
45 minutes
ASTM C150/C150M-22
Specific Surface (Fineness by Blaine), min
225 m²/kg
No limit, but must be reported
ASTM C150/C150M-22
Sulphur Trioxide (SO3), max
2.5%
2.3%
ASTM C150/C150M-22 (Type V)
⚠ Verify details from original standards before use
What is the key chemical requirement that makes this cement sulphate-resistant?+
The Tricalcium Aluminate (C3A) content is limited to a maximum of 5 percent by mass (Table 1).
Can SRPC be used for general purpose construction?+
While technically possible, it is not economical. SRPC is more expensive and has slower early strength gain than OPC, so its use should be limited to environments where sulphate resistance is specifically required.
What is the minimum 28-day compressive strength requirement for SRPC?+
The minimum average compressive strength of three mortar cubes is 33 MPa at 28 days (Table 2).
Is this cement suitable for structures exposed to both sulphates and chlorides?+
No, this standard is for resistance to sulphates only. For combined chloride and sulphate environments, Portland Slag Cement (IS 455) or Pozzolana Cements (IS 1489) with low C3A clinker are preferred as per IS 456.