Beneficial Effect of Incorporation of Slag on the Hydration Heat, Mechanical Properties and Durability of Cement Containing Limestone Powder

EasyChair Preprint 1592

Abstract

This paper presents the experimental results of a wide research program, tending to determine the hydration mechanism, mechanical properties and durability performance in ternary cement containing limestone powder and blast furnace slag. The limestone powder increase the hydration at early ages inducing a high strength at early age, but it can reduce the later strength due to the dilution effect. On the other hands, Granulate Blast Furnace Slag (GBFS) contributes to increase the compressive strength at later ages. Hence, at medium blended cement (OPC-LP-GBFS) with better performance could be produced. Results show at an early age the limestone powder, increase the hydration degree and the compressive strength. At later age the Granulate Blast Furnace Slag is very effective in producing ternary blended cements with similar on higher compressive strength than the cement (CEM II/A 42.5) at 28 and 90 days. For durability, the incorporation of the blast furnace slag into the limestone cement improves remarkably resistance effect to attack by acids and sulfates and it has been found that the durability of the cements never depends on the mechanical strength.

Keyphrases: Mineral addition, Mortar, Sulfate attack, acid attack, compressive strength, hydration heat

@booklet{EasyChair:1592,
  author    = {Toufik Boubekeur and Bensaid Boulekbache and Mohamed Salhi and Karim Ezziane and El.Hadj Kadri},
  title     = {Beneficial Effect of Incorporation of Slag on the Hydration Heat, Mechanical Properties and Durability of Cement Containing Limestone Powder},
  howpublished = {EasyChair Preprint 1592},
  year      = {EasyChair, 2019}}