Development of a new rapid, relevant and reliable (R3) test method to evaluate the pozzolanic reactivity of calcined kaolinitic clays

By F. Avet, R. Snellings, A. Díaz, Mohsen Ben Haha, Karen L. Scrivener. 2016

645 citations recorded by the source corpus.

Abstract The present paper introduces a new rapid, relevant and reliable (R 3 ) test to predict the pozzolanic activity of calcined clays with kaolinite contents ranging from 0 to 95%. The test is based on the correlation between the chemical reactivity of calcined clays in a simplified system and the compressive strength of blends in standard mortar. The simplified system consists of calcined clay portlandite and limestone pastes with sulfate and alkali levels adjusted to reproduce the reaction environment of hydrating blended cements. The pastes were hydrated for 6 days at 20 °C or for 1 day at 40 °C. The chemical reactivity of the calcined clay can be obtained first by measurement of the heat release during reaction using isothermal calorimetry and second by bound water determination in a heating step between 110 °C and 400 °C. Very good correlations were found between the mortar compressive strength and both measures of chemical reactivity.

Subfields: Building and Construction, Civil and Structural Engineering, Earth-Surface Processes

View Paper: https://www.semanticscholar.org/paper/8203af987ae6931baee8a588ae7d34e2ec9c5754

How researchers see this paper

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

In Building and Construction

1. F. Avet
2. H. Wong
3. Karen L. Scrivener
4. R. Snellings

In Civil and Structural Engineering

1. F. Avet
2. Hamed Maraghechi
3. H. Wong
4. Karen L. Scrivener
5. Hadi Kamyab
6. R. Snellings
7. B. Lothenbach
8. F. Zunino

In Earth-Surface Processes

1. F. Avet
2. Karen L. Scrivener
3. R. Snellings
4. B. Lothenbach

Citations in the corpus

• Performance of Limestone Calcined Clay Cement (LC3) with various kaolinite contents with respect to chloride transport (2018, methodology): “However, due to the presence of calcined clay with significant amount of aluminates, 2 wt% gypsum ([ 98% purity) was added to the PPC-30 and LC(3)-50 blends to give properly sulfated systems, as detailed in [28].”