Experimental Investigation on Strength Characteristics of Cement by Using Nano Synthesis Expanded Clay Aggregate and Silica Fume

The properties of cement's strength when expanded clay aggregate and silica fume were added. The goal of the research was to compare the compressive strength, flexural strength, and split tensile strength of cement mortar and concrete made with different ratios of expanded clay aggregate and silica fume. Cement mortar and concrete mixes were formulated utilizing expanded clay aggregate replacements of 5%, 10%, and 15%, as well as silica fume replacements of 5%, 10%, and 15%, as part of the experimental program. The specimens were cured for 28 days before undergoing compressive, flexural, and split tensile strength tests. Flexural strength and split tensile strength of cement mortar and concrete were enhanced with an increase in the proportion of expanded clay aggregate and silica fume replacement. The biggest increases in flexural strength and split tensile strength occurred at a 15% replacement rate for expanded clay aggregate and 15% for silica fume. The research concluded that the strength of cement mortar and concrete might be improved by using silica fume and expanded clay aggregate as cement additives. Based on the particular application and desired strength requirements, it is best to calculate the ideal ratio of expanded clay aggregate and silica fume replacement. In this experiment, when compression strength gives for nominal mix the concrete attains 20.8 N/mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>. Same when compression strength given for five percentage silica fume and the concrete attains 18.9 N/mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>, for 10 percentage silica fume the concrete attains 20.6 N/mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> and finally compression strength conducted for 15 percentage silica fume and it attains 22.6 N/mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>.