Comparison of locally manufactured composite tile adhesive using waste material with imported tile adhesive

Abstract

One of the most important construction activities worldwide is the construction using autoclaved aerated concrete units at the global level is increasing significantly and the use of these units leads to the consumption of large amounts of resources and causes large residues waste, which leads to great damage to the environment and significant economic losses for companies and people. In recent periods, a noticeable increase has been observed in the manufacture of building units in Iraq. Iraqi factories have been affected by the waste resulting from manufacturing processes. The main objective of the study is to utilize tons of waste caused by the process of manufacturing AAC block in many Iraqi factories and turn it into a high-quality, environmentally friendly, and economical cement-based polymer-modified adhesive. The experimental part was carried out by preparing the product first and then studying properties according to international standards, SEM, EDS, mapping, and other techniques have been used to characterize the prepared samples. The adhesive properties were strongly affected by autoclaved aerated waste powder. Excellent bond strength exceeded the standard by 30%. Building units had 50% higher adhesion and 30% higher tensile strength than standard. Compared to market adhesive, the study adhesive has better properties. As for the economic factor, using waste in adhesive manufacturing reduced the price of 1 m3 by 15% compared to the reference mixture, but the study's adhesive was at least 40% cheaper than imported adhesives.

Keywords

• construction and demolition waste
• autoclaved aerated concrete waste
• recycling
• cement replacement, polymer-modified cement mortar