Microstructural characterization of catalysis product of nanocement based materials: A review

Norsuzailina Mohamed Sutan,Khairul Anwar Mohamad Said,Habibur Rahman Sobuz,Alsidqi Hassan,Siti Noor Linda Taib,Nur Izaitul Akma Ideris,Siti Kudnie Sahari,Delsye Teo Ching Lee,N Mohamed Noor,A.W Azhari

doi:10.1051/e3sconf/20183401039

Norsuzailina Mohamed Sutan, Khairul Anwar Mohamad Said + Show 8 more

Open Access

https://doi.org/10.1051/e3sconf/20183401039

Copy DOI

Abstract

Cement as an essential element for cement-based products contributed to negative environmental issues due to its high energy consumption and carbon dioxide emission during its production. These issues create the need to find alternative materials as partial cement replacement where studies on the potential of utilizing silica based materials as partial cement replacement come into picture. This review highlights the effectiveness of microstructural characterization techniques that have been used in the studies that focus on characterization of calcium hydroxide (CH) and calcium silicate hydrate (C-S-H) formation during hydration process of cement-based product incorporating nano reactive silica based materials as partial cement replacement. Understanding the effect of these materials as cement replacement in cement based product focusing on the microstructural development will lead to a higher confidence in the use of industrial waste as a new non-conventional material in construction industry that can catalyse rapid and innovative advances in green technology.

Highlights

In facing the new era, issues of sustainability and durability of construction industry are often emphasized on the pursuit of finding materials as partial cement replacement to decrease the high energy consumption and carbon dioxide emission during cement production [1]
The scope of this review is on two materials namely spent fluid cracking catalyst (SFCC and nanosilica.The spent fluid cracking catalyst (SFCC) which is produced from the catalytic cracking in petroleum industry is an inorganic waste material [2-3] and its contribution in cement-based production can bring environmental and economic benefits, reducing the final cost of cement-based products and the environmental impacts related to cement production and can be used as partial cement or sand replacement[4-5]
The material can be classified as non- hazardous material [6]for cement replacement because it was found that low concentration of heavy metal that can leach out of the SFCC which gives higher confidence in its possible use as a construction material.Other researchers [7] stated that nano-materials have received wide attention for use in the constructions sector and the increasing in the performance has been discovered for these materials in terms of smart functions and sustainable characteristics [8]

Summary

Introduction

In facing the new era, issues of sustainability and durability of construction industry are often emphasized on the pursuit of finding materials as partial cement replacement to decrease the high energy consumption and carbon dioxide emission during cement production [1]. The candidates that can be used as cement replacement must have two characteristics: high reactive silica content and very fine particle size. Many studies have shown that the contribution of nano silica (NS) in cementitious systems especially in construction of cement-based products is by improving the characteristics of the plastic and hardened material[9]. Referring to the previous study conducted, [11] stated that silica nano-particles are environmental friendly material and has no impact on health issues. It can help to create something new and sustainable to reduce the use of cement and reduce the cost of final construction works

Objectives

Conclusion