Parameter Study of Metakaolin/ Blast Furnace Slag-Based Alkali-Activated Materials

Veerle Boel; Leo Van Cauter

doi:10.4028/p-oJy0Jf

Paper Titles

Preface

Influence of Ferrochrome Slag Co-Binder on Mechanical Behaviour of Fly Ash Geopolymer Mortars
p.3

Experimental Determination of the Coefficient of Thermal Expansion of Hardened Alkali-Activated Slag Pastes
p.19

Parameter Study of Metakaolin/ Blast Furnace Slag-Based Alkali-Activated Materials
p.29

Effect of Calcium Nitrate on the Performance of Slag Blended Cement
p.45

Contribution to the Optimization of Quantitative and Qualitative Parameters of the Composition of Slag Aggregate Permeable Concrete
p.55

Improving Frost Resistance with Lightweight Aggregate in High-Performance Concrete
p.69

Effect of Tire Cords, Steel and Polypropylene Fiber Content on the Fatigue Response of Cement-Based Mortars
p.77

Empirical Model for Predicting Elastic Modulus of CRCA Concrete: An Approach towards Sustainable Concrete Design
p.87

HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 145Parameter Study of Metakaolin/ Blast Furnace...

Parameter Study of Metakaolin/ Blast Furnace Slag-Based Alkali-Activated Materials

Abstract:

In this paper, more than 20 mixtures of metakaolin/blast furnace slag alkali-activated mortar mixtures with a maximum grain size of 2.5 mm are investigated. Parameters varied include mixing procedure, curing conditions of which the most used procedure is sealed curing at 70°C for 7 days, granular skeleton, water-to-solid ratio (0.35 to 0.60), metakaolin content (30 to 100%), and type of alkaline activator (sodium silicate solution or potassium silicate solution). The mix design is based on chemical calculations based on the oxide composition of the precursors and activators. Fresh material properties i.e. initial and final setting time, and workability are measured for part of the mixtures. Mechanical tests have been performed on mortar size prisms in order to determine the compressive and flexural tensile strength of all mixtures. The range of compressive strength varies in between 50 and 142 MPa. Based on the results Feret’s law seems to be valid for alkali-activated materials as well.

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Periodical:

Advances in Science and Technology (Volume 145)

Pages:

29-44

DOI:

https://doi.org/10.4028/p-oJy0Jf

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Online since:

March 2024

Authors:

Veerle Boel*, Leo Van Cauter

Keywords:

Blast Furnace Slag Compressive Strength, Feret’s Law, Geopolymer Concrete, Metakaolin

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