Acid Resistance of Ternary Blended Nanosilica Concrete Incorporating Fly Ash and Alccofine

Avuthu Narender Reddy,T Meena

doi:10.13189/cea.2021.090222

Abstract

The use of industrial waste or byproducts as a replacement of cement leads to cost reduction, energy-saving, and is also eco-friendly. Studies reveal that the quaternary and ternary blended concrete may be superior in durability properties when compared with conventional concrete. With the expansion of the use of concrete structures in the sewage system, the corrosion effects of aggressive acid attacks on cement-based construction have gained more significance. The present study aims to investigate the acid resistance of M30 and M60 grades of concrete and the influence of the combination of fly ash, alccofine, and nanosilica in it. The combination of 25% fly ash, 10% alccofine and various percentages of nanosilica (0.5%, 1%, 2%, 3%) have been tested for 28, 56, 90,180 days for acid resistance. From the result, it is seen that the concrete with a combination of fly ash, alccofine, and nanosilica showed better performance in resisting the acid attack on M30 and M60 grades of concrete based on percentage weight loss of specimens over different curing periods.

Highlights

The beneficial properties of concrete, strength and durability improve its role in the construction industry
Some of the industrial by-products which are rich in silica and alumina content such as fly ash (FA), rice husk ash (RHA), ground granulated blast furnace slag (GGBS), silica fume (SF), alccofine (AL), red mud, etc which are creating treat to the environment are being used as partial replacement of Ordinary Portland Cement (OPC) in concrete [10,11,12,13,14,15]
The present study aims to investigate the influence of a combination of FA, AL, NS forming a Ternary Blended the effect of NS on durability properties of Concrete (TBC) on acid resistance of concrete mixtures of self-compacting concrete and concluded that the concrete M30 and M60 grade

Summary

Introduction

The beneficial properties of concrete, strength and durability improve its role in the construction industry. Alccofine having a specific test on M80 grade of cement by supplanting cement with a gravity of 2.9, the particle size of 1.5 microns to 9 microns, mix of FA and NS From the results, he concluded that acquired from Counto Microfine Products Pvt. Ltd cement replacement with a combination of 3% NS and 20% confining to ASTM C989-1999 [28] was used in the FA showed maximum strength and maximum acid attack entire study. M-Hong Zhang (2011) [6] had done an experimental Notations in Table: GC: Grade of Concrete, MN: Mix investigation into mortars containing various percentages Number, OPC: Ordinary Portland Cement Content, FA: of nanosilica, from the result he concluded that the Fly ash Content, AL: Alccofine Content, NS: Nanosilica incorporation of 2% nanosilica reduced initial and final Content

Methodology

Results and Discussion

Conclusions