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The aim is to assess the mechanical and carbonation properties of mortars combining GGBS and recycled construction spoil.

January 26, 2026BuildingsOpen Access

Mechanical and Carbonation Performance of Alkali-Activated Mortars Incorporating GGBS and Recycled Construction Spoil

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The aim is to assess the mechanical and carbonation properties of mortars combining GGBS and recycled construction spoil.
Evaluated different alkali contents and water-to-solid ratios.
Compared effects of NaOH and Na2SiO3 activators.
Analyzed flexural and compressive strength of the mortars.
Studied carbonation resistance under supercritical conditions.
CS incorporation reduced flowability of mortars.
NaOH-activated mortars showed better workability than Na2SiO3-activated ones.
30% CS replacement improved 7-day flexural strength significantly.
Higher alkali content generally increased compressive strength.
Under supercritical carbonation, NaOH-activated blends exhibited a ~20% strength increase.

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Evaluates the mechanical properties of alkali-activated mortars, indicating improved carbonation resistance with industrial byproducts.

Wang et al. (2026) studied this question.

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