Amirali Ziarati - School of Civil Engineering, College of Engineering University of Tehran, Tehran, Iran.
Rambod Jandaghi - School of Civil Engineering, College of Engineering University of Tehran, Tehran, Iran
Nima Zafarmomen - School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran.
Mohammad Reza Daneshpasand - Department of Civil Engineering, Sharif University of Technology, Tehran, Iran
Shahram Vahdani - School of Civil Engineering, College of Engineering University of Tehran, Tehran, Iran.

In this article, the characteristics of masonry mortar made with recycled sand and zeolite are investigatedin the context of sustainable development. For this purpose, ۸ masonry mortar mix designs were considered,in which, in addition to the base design, recycled sand replaced natural sand by ۵۰% and ۱۰۰%, and zeolitereplaced cement by ۱۰%, ۱۵%, and ۲۵%. Additionally, the water-to-cement weight ratio was set at ۰.۵۵, andthe cement-to-sand weight ratio was set at ۱:۳. Experiments were designed to measure various physical andmechanical properties of the masonry mortar made with recycled sand and zeolite. Tests for water absorptionand density were conducted to evaluate physical properties, as well as tests for compressive strength andflexural strength to assess mechanical properties, and a flow table test to evaluate workability and efficiency.The tests performed on the masonry mortars made with recycled sand and zeolite have yielded acceptableresults that meet the requirements of the national standard for masonry mortar. They demonstrate that replacing۵۰% of natural sand with recycled sand and ۱۵% of cement with zeolite can be a good strategy for reducingthe use of natural materials, promoting sustainable development, and achieving green mortar

Recycled Sand, Zeolite, Sustainable Development, Green Mortar, Masonry Mortar