What does this research mean for the field?

In low-carbon concrete, adding 5% silica fume enhances compressive strength and interfacial transition zone properties through high pozzolanic reactivity and nano-filling, whereas incorporating 25% fly ash reduces early strength and carbonation resistance due to low early pozzolanic activity. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The aim is to explore the durability of low-carbon concrete containing industrial waste, focusing on carbonation resistance and mechanical properties.

June 7, 2026MaterialsOpen Access

Multi-Scale Investigation of Carbonation Evolution and Microstructural Changes in Concrete Containing Fly Ash and Silica Fume

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The aim is to explore the durability of low-carbon concrete containing industrial waste, focusing on carbonation resistance and mechanical properties.
Tested carbonation resistance, including carbonation depth and strength metrics.
Employed multi-scale characterization techniques like XRD, SEM-EDS, and nanoindentation.
Analyzed the effects of 25% fly ash and 5% silica fume on concrete mixes.
25% fly ash reduced compressive strength by 11.30% in CF-25 and 11.39% in BF-25 mixes.
Carbonation depth increased by 58.46% in CF-25 with fly ash.
5% silica fume improved compressive strength by 18.92% in CS-5 and 9.94% in BS-5 mixes.

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Implication

Investigates the durability of low-carbon concrete with fly ash and silica fume, revealing effects on mechanical properties.

Cite This Study

Zhan et al. (2026) studied this question.

synapsesocial.com/papers/6a250cd27def13d035e1d06e https://doi.org/10.3390/ma19112426

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Multi-Scale Investigation of Carbonation Evolution and Microstructural Changes in Concrete Containing Fly Ash and Silica Fume

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Implication

Cite This Study

Multi-Scale Investigation of Carbonation Evolution and Microstructural Changes in Concrete Containing Fly Ash and Silica Fume

Key Points

Discussion

Implication

Cite This Study

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