Statistical analysis of high performance self-compacting mortar containing ternary sand mixtures

Abstract

High performance self-compacting mortar (HPSCM) has a number of special properties that are beneficial in masonry mortar applications. The most important property of this mortar type is dependent on the user and application, the flexibility of send-based HPSCM to meet a wide range of needs in both new masonry construction and restoration, rehabilitation of structure and masonry projects is demonstrated. The aim of this work is to find an optimal composition of HPSCM with three types of sand (quarry, river and dune). The optimization of the composition was carried out by implementing a mixed experimental design of the mixture design type. This paper is devoted to study the effect of the various factors (three sand) were used for three variable processes modeling (cement content in the range of 300 to 400 kg/m3, percentage of recycled coarse aggregate from 0 to 100% to obtain the rheological and mechanical properties that will yield to the most ternary sand mortar mixtures using the method of the experimental designs. Based on different principles parameters, mixture design approach can be categorized into loose and tight compactness of sand combinations, relative slump-flow and relative funnel speed of fresh mortar as well as the flexural and compressive strengths of hardened mortar. Results of the analysis have shown that the highest mechanicals and most rheological properties mixtures to be the one prepared with 100% QS.