A set of data on the effect of a nano-modified additive on cement-sand mortar for brickwork in a dry, hot climate
Description
This article contains data on the effect of a nano-modified additive on the rheological, physical and strength properties of cement-sand mortar for brickwork in a dry hot climate. The data were obtained under production conditions at five construction sites in Al Muthanna province in southern Iraq. Based on the analysis of observational data, defects have been identified that have a different effect on the quality of brick structures being erected. The decrease in the quality of structures is due to the fact that with low mobility of the mortar mixture, the brick is laid with uneven contact with the mortar over the contact area. To improve the quality of building structures by improving the adhesion between mortar and brick, additives have been used to obtain mortar mixtures with specified properties. The nano-modified additive consists of a superplasticizer, amorphous nanomodified silicon dioxide, an air-entrapping additive and a retarder for the setting and hardening time of Portland cement. A characteristic feature of the effect of the additive components on the cement-sand mortar is the presence of pronounced relevant dosage ranges of the components, which ensure an increase in water retention, mobility and workability of the mortar, as well as an adjustable setting time and strength.