The construction industry has developed at the pace as human race. With time many materials were developed to be used in construction. Among all the materials concrete has been tested, researched and used for almost every type of construction. Sand is a basic component of concrete. With increase in concrete production and usage the sand dredging also increased at an alarming rate. The excess dredging of sand causes a lot of adverse effects on rivers hence on environment. In order to mitigate this ill effect, many other materials such as foundry sand, rice husk ash are being tried and tested to partially or fully replace sand in concrete. This paper is an experimental investigation of crushed limestone dust to evaluate its feasibility in concrete mix to partially replace fine aggregate. In the paper various mechanical and physical properties were evaluated of concrete incorporating crushed limestone dust. Properties including compression strength, splitting tensile strength, workability, chloride ion permeability (RCPT), and ultrasonic pulse velocity (USPV) were tested. Most of the evaluation of the properties was done after 1 week, 4 weeks, and 8 weeks of water curing. Almost all the tests shows positive results if not better than traditional concrete.