Development of Calcium Silicate Hydrate (CSH) Minerals from Wasted Polyisoccyanucrate (PIR) and Rockwool – the Effect of Mixing Ratio Between PIR and Rockwool

Abstract

Calcium Silicate Hydrate (CSH) mineral has long been highlighted as a material with many potential applications, especially in the fields of construction and environmental protection, thanks to its special physical and mechanical properties such as durability, high surface area, low cost. In this study, synthesizing CSH by taking advantage of available waste from Industrial products and Rockwool household appliances, acting as the main raw material to form CSH minerals in the hydrothermal environment. Polyisocyanurate (PIR) has a construction application as a stable layer of fireproof insulation. PIR and Rockwool affect the environment when out of service, this study takes advantage of PIR to make the filler in CSH material synthesized from Rockwool to solve the environmental problems. In this research, the effect of mixing ratio (wt.%) of PIR to Rockwool with different ratio such as 100/0; 66/34; 34/66 and 0/100 on the forming of CSH were investigated. The microstructure of obtained CSH were studied to understand the chemical forming of CSH. Conduct an analysis of FT-IR to determine the chemical bonds in CSH and XRD menthods to determine the phase and crystal components. In addition, the SEM and EDX methods are conducted to determine the surface microstructure as well as the elemental composition of CSH material. This research also summarizes the ability to synthesize industrial and civil waste sources containing silicon and calcium and suggest the aggregate potential from various waste sources.