For M25 grade concrete, the split tensile strength in terms of percentage of its compressive strength is ………..

📊 Split Tensile Strength as a Percentage of Compressive Strength (M25)

The split tensile strength of concrete is always much lower than its compressive strength due to the brittle nature of the cement matrix. For normal concrete (including M25), the split tensile strength is typically 7–11% of the compressive strength.

For M25 (f_ck = 25 N/mm²), this gives an expected split tensile strength of roughly 1.75–2.75 N/mm², which is consistent with IS 456 flexural tensile values.

Key takeaway

Tensile strength of concrete ≈ 7–11% of compressive strength. This is why concrete cannot be used without reinforcement in tension zones.