# GATE Questions & Answers of Concrete - Constituents, Mix design, Short-term and Long-term Properties

## What is the Weightage of Concrete - Constituents, Mix design, Short-term and Long-term Properties in GATE Exam?

Total 5 Questions have been asked from Concrete - Constituents, Mix design, Short-term and Long-term Properties topic of Construction Materials and Management subject in previous GATE papers. Average marks 1.00.

The Le Chatelier apparatus is used to determine

The frequency distribution of the compressive strength of 20 concrete cube specimens is given in the table.

If $\style{font-family:'Times New Roman'}\mu$ is the mean strength of the specimens and $\style{font-family:'Times New Roman'}\sigma$ is the standard deviation, the number of specimens (out of 20) with compressive strength less than $\style{font-family:'Times New Roman'}{\mu-3\sigma}$ is ______