The Synergic Effects of Mineral Admixtures in Ternary Blended Cement: A Review

Shubbar Jawad Al-Obaidey

doi:10.31026/j.eng.2021.02.07

Abstract

In the last decades, using mineral admixture in concrete became very necessary to improve concrete properties and reduce CO2 emissions associated with the cement production process. Subsequently, more sustainable concrete can be obtained. Ternary blended cement containing two different types of mineral admixture can achieve ambitious steps in this trend. In this research, the synergic effects of mineral admixtures in ternary blended cement and its effects on concrete fresh properties, strength, durability, and efficiency factors of mineral admixture in ternary blended cement, were reviewed. The main conclusion reached after reviewing many literature pieces is that the concrete with ternary blended cement, depending on types of mineral admixtures used, replacement percentages by weight of cement, and age of concrete, exhibited superior properties than with no mineral admixtures and corresponding binary blended cement concrete.

Highlights

The ordinary Portland cement (OPC) production has increased at a faster rate in the last decades
The results showed that ternary blended cement of silica fume and type F fly ash increased concrete strength at all ages, and most of the increases can be obtained at an early age
The results showed that both compressive and splitting tensile strength for ternary blends had to be improved relative to the control mix (100% OPC) at 28 days, and optimum replacement percentages were 30 % (15% rice husk ash (RHA) + 15% MK)

Summary

INTRODUCTION

The ordinary Portland cement (OPC) production has increased at a faster rate in the last decades. Several SCMs due to cement production increases are blended with (OPC) clinker to produce binders with high sustainability. These blended types of cement can be defined as binary, ternary, and quaternary. Ternary blended cement allows replacing a high volume of (OPC) with two different mineral admixtures types. One of these has slow reactivity, such as furnace slag, type F fly ash, etc., while. By incorporating silica fume with high pozzolanic reactivity, this problem can be overcome due to the effect of these admixtures' synergy in ternary blended cement (Mullick, 2007a). This research reviewed the synergic effects of mineral admixtures and its effects on concrete fresh properties, strength and durability, and efficiency factors of mineral admixture in ternary blended cement

The Advantages of Ternary Blended Cement

Physical and Chemical Requirements for Ternary Blended Cement

Findings

CONCLUSIONS