What does this research mean for the field?

Incorporating 10% spent coffee grounds with a 0.5 M cementation solution significantly enhances microbially induced calcite precipitation in sandy soils, increasing calcium carbonate precipitation by approximately 40% and substantially improving mechanical properties. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the efficacy of spent coffee grounds as a waste-derived supplementary scaffold to enhance microbially induced calcite precipitation for sandy soil stabilization.

September 10, 2026Developments in the Built EnvironmentOpen Access

Experimental investigation of sandy soil stabilization via microbially induced calcite precipitation using spent coffee grounds

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Authors

MSMoein Khoshdel Sangdeh PRPayam Zanganeh Ranjbar MPMeghdad Payan

Discussion

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Overview

Experimental study demonstrates enhanced stabilization of sandy soil using microbial calcite precipitation and spent coffee grounds, indicating a sustainable pathway for organic waste reuse.

Key Points

To evaluate the efficacy of spent coffee grounds as a waste-derived supplementary scaffold to enhance microbially induced calcite precipitation for sandy soil stabilization.
Treated sandy soil specimens with microbially induced calcite precipitation augmented with spent coffee grounds across varying formulations, identifying an optimal mixture of 10% spent coffee grounds and 0.5 M cementation solution.
Evaluated mechanical behavior and durability through unconfined compressive strength, ultrasonic pulse velocity, California bearing ratio, and freeze–thaw resistance testing.
Characterized microstructure, mineralogy, and chemical bonding using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR).
Adding 10% spent coffee grounds with a 0.5 M cementation solution increased calcium carbonate precipitation by approximately 40% compared to microbially induced calcite precipitation alone.
Compared to untreated sand, the optimized bio-composite improved unconfined compressive strength by 139.3%, ultrasonic pulse velocity by 225%, and California bearing ratio by 226.8%.
Microstructural and spectroscopic analyses confirmed matrix densification, enhanced pore filling, and improved resistance to freeze–thaw degradation.

Cite This Study

Sangdeh et al. (2026) studied this question.

synapsesocial.com/papers/6aa27a7f58559d80afc7312d https://doi.org/10.1016/j.dibe.2026.101038

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September 10, 2026Developments in the Built EnvironmentOpen Access

Experimental investigation of sandy soil stabilization via microbially induced calcite precipitation using spent coffee grounds

View Full Paper

Ask AI

Bookmark

Authors

MSMoein Khoshdel Sangdeh PRPayam Zanganeh Ranjbar MPMeghdad Payan

Discussion

Member takes

Overview

Experimental study demonstrates enhanced stabilization of sandy soil using microbial calcite precipitation and spent coffee grounds, indicating a sustainable pathway for organic waste reuse.

Key Points

To evaluate the efficacy of spent coffee grounds as a waste-derived supplementary scaffold to enhance microbially induced calcite precipitation for sandy soil stabilization.
Treated sandy soil specimens with microbially induced calcite precipitation augmented with spent coffee grounds across varying formulations, identifying an optimal mixture of 10% spent coffee grounds and 0.5 M cementation solution.
Evaluated mechanical behavior and durability through unconfined compressive strength, ultrasonic pulse velocity, California bearing ratio, and freeze–thaw resistance testing.
Characterized microstructure, mineralogy, and chemical bonding using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR).
Adding 10% spent coffee grounds with a 0.5 M cementation solution increased calcium carbonate precipitation by approximately 40% compared to microbially induced calcite precipitation alone.
Compared to untreated sand, the optimized bio-composite improved unconfined compressive strength by 139.3%, ultrasonic pulse velocity by 225%, and California bearing ratio by 226.8%.
Microstructural and spectroscopic analyses confirmed matrix densification, enhanced pore filling, and improved resistance to freeze–thaw degradation.

Cite This Study

Sangdeh et al. (2026) studied this question.

synapsesocial.com/papers/6aa27a7f58559d80afc7312d https://doi.org/10.1016/j.dibe.2026.101038

View Full Paper

Ask AI

Bookmark