I want to perform a bending test for mortar specimen (cement+sand+water). The dimensions are 20 X 20 X 100 mm. I followed ASTM D790. Is it wrong?

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Mohannad H. Al-Sherrawi

Dear Saurabh Khandelwal, you can use ASTM C348:

Standard Test Method for Flexural Strength of Hydraulic-Cement Mortars

Best wishes.

Doha M Al Saffar

(40×40×160) mm for flexural strength of cement mortar according to ASTM C348.

Ashraf Heniegal

I think that you should carry out the test on a standard specimens 40x40x160 mm

Tumadhir Merawi Borhan

ASTM C348 is the answer of your question

Sajjad Ali Mangi

Dear, as per ASTM C348, 40mm×40mm×160mm for flexural strength of cement mortar.