What question did this study set out to answer?

This study aims to evaluate the effects of early-strength admixtures on the performance of repair mortars containing recycled concrete powder and GGBFS.

June 19, 2026BuildingsOpen Access

Compatibility and Performance Evaluation of Early-Strength Admixtures in Repair Mortar Containing Recycled Concrete Powder and GGBFS

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Authors

YGYuanxin GuoQingdao Agricultural University WLWeiwei LiHarbin University of Science and Technology YWYue WangUniversity of Stuttgart

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Implication

Randomized trial evaluates early-strength admixtures on repair mortar performance, suggesting optimal dosages for concrete repair.

Key Points

This study aims to evaluate the effects of early-strength admixtures on the performance of repair mortars containing recycled concrete powder and GGBFS.
Investigated fluidity, flexural and compressive strength, tensile bond strength, drying shrinkage, and hydration characteristics of mortars.
Incorporated four early-strength admixtures at specified dosages into a cement-based repair mortar.
Conducted experiments to measure the effectiveness of each admixture on key performance indicators.
1.5% calcium formate increased flexural strengths by 37.0% at 3 d and 20.3% at 28 d compared to the control.
Highest tensile bond strength of 1.052 MPa with 33.15% increase using 1.0% anhydrous sodium sulfate at 14 d.
Calcium acetate reduced drying shrinkage to 695.14 × 10−6 at 28 d.

Cite This Study

Guo et al. (2026) studied this question.

synapsesocial.com/papers/6a34df2365a5b0777af2e548 https://doi.org/10.3390/buildings16122421

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Compatibility and Performance Evaluation of Early-Strength Admixtures in Repair Mortar Containing Recycled Concrete Powder and GGBFS

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Key Points

Cite This Study

Compatibility and Performance Evaluation of Early-Strength Admixtures in Repair Mortar Containing Recycled Concrete Powder and GGBFS

Discussion

Member takes

Implication

Key Points

Cite This Study

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