Objective Question & Answer

The strength of a material below which not more than 5% of the test results are expected to

fall is known as the characteristic strength of the material.

Therefore,

Number of cubes having 28 days' compressive strength greater than 20 MPa out of 100

cubes: =100-5=95

किसी पदार्थ की वह सामर्थ्य, जिसके नीचे 5% से अधिक परीक्षण परिणाम आने की संभावना नहीं होती है, उस

पदार्थ की अभिलाक्षणिक सामर्थ्य (Characteristic Strength) कहलाती है

अतः,