Mechanical properties and durability of mortar and concrete containing natural pozzolana and limestone blended cements

By M. Ghrici, S. Kenai, Mohamed Said-Mansour. 2007

450 citations recorded by the source corpus.

The benefits of limestone filler (LF) and natural pozzolana (NP) as partial replacement of Portland cement are well established. Economic and environmental advantages by reducing CO2 emission are well known. However, both supplementary materials have certain shortfalls. LF addition to Portland cement causes an increase of hydration at early ages inducing a high early strength, but it can reduce the later strength due to the dilution effect. On the other hand, NP contributes to hydration after 28 days improving the strength at medium and later ages. Hence, ternary blended cement (OPC–LF–NP) with better performance could be produced. In this paper, mortar prisms in which Portland cement was replaced by up to 20%LF and 30%NP were tested in flexure and compressive strength at 2, 7, 28 and 90 days. Some samples were tested under sulfate and acid solutions and for chloride ions permeability. Results show that the use of ternary blended cement improves the early age and the long-term compressive and flexural strengths. Durability was also enhanced as better sulfate, acid and chloride ions penetration resistances were proved. (A) “Reprinted with permission from Elsevier”.

Subfields: Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/304aa6edf32165c5670a3d405b48a4aadb17d23e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Civil and Structural Engineering

Citations in the corpus

Experimental investigation on flexural toughness of hybrid fiber reinforced concrete (HFRC) containing metakaolin and pumice (2014, background): “Therefore, substitution a portion of the cement by pozzolanic materials causes improvement in mechanical properties of concrete and hybrid fiber reinforced concretes and reduces porosity in transition zones [28–36].”
Influence of various amounts of limestone powder on performance of Portland limestone cement concretes (2009, unknown): “[20] showed that incorporation of 15% limestone into PC diminishes the sorptivity of concrete by 2% and 9% at 28 and 90 days of age, respectively, for the w/b ratio of 0.”
High-volume natural volcanic pozzolan and limestone powder as partial replacements for portland cement in self-compacting and sustainable concrete (2014, background): “All the binary and ternary blend mixes produced higher resistance to chloride penetration than the 100 OPC and 85 OPC–15 LS reference mixes, as has been shown for many blended pozzolanic concretes [51,12,67].”
Dispersion of CaCO3 nanoparticles by sonication and surfactant treatment for application in fly ash–cement systems (2014, background): “Studies have shown that CaCO3 can accelerate early-age hydration, provide nucleation sites for C–S–H (and perhaps CH), and react with calcium aluminates (C3A) and tricalcium silicate (C3S) to produce calcium carboaluminates and calcium carbosilicate hydrates, respectively [5, 7, 15, 22, 24, 29, 30, ”