Synthesis of low cost artificial sand from fly ash and its application as a filter material

G. Venkateshwar Reddy; Pupalwad Arti Sudam

Abstract

The usage of natural river sand is increasing vastly. Geopolymers are materials with three-dimensional alumina silicate structures that have a high mechanical strength and can be used as an alternative to Portland cement. The probability of using Natural river sand can also be replaced with geopolymer synthetic sand. There are many properties which may lead the scarcity of natural river sand they are Because of landslides, tsunamis and erosion. The GPSS can be used as mixture in cement and mortar. Geopolymerization is a process that produces sustainable geopolymer synthetic sand that can be done by fly ash mixing with 10M and 12M of NaOH and Na2Sio3. The properties or values of GPSS shows similar to natural river sand for grain size distribution, friction angle, permeability and specific gravity. GPSS has a pH of 11.72 and a TDS of 768 mg/L, whereas natural river sand has a pH of 7.40 and a TDS of 452 mg/L. In comparison to NRS sand, GPSS has a higher pH value and lower TDS. However, it has very comparable qualities when used to make mortar or concrete, therefore GPSS can be used as a substitute for natural river sand. Embankment dam failures is becoming a worldwide occurrence, with a devastating impact on civilian lives. Moreover, Natural, and man-made dam failures formed, are susceptible to damage unless there is adequate stability. The bulk of the seepage failures are linked to intense water seepage. The seepage failures can be examined by using terzagi theory. Examination of dam stability due to massive rains is a critical issue to examine in the area with high seepage failures. This study is aimed towards exploring the effect of geotextile and artificial sand as seepage barrier through embankment dams. This paper aims to research on the impact of seepage failures through embankment dams by using Geo Studio 2012 application using NRS and GPSS. The major goal of this research is to raise awareness about the consequences of high seepage rates (discharge) through embankment dams.