What does this research mean for the field?

Recycled sand derived from excavation waste can fully replace natural sand in cement mortar, achieving optimal strength and workability at a sand-to-cement ratio of 0.7 while reducing material costs. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This study aims to evaluate the use of recycled sand from excavation waste as a sustainable alternative to natural sand in mortar production.

August 5, 2026SustainabilityOpen Access

Technical Properties and Sustainable Reuse of Recycled Excavation Materials as Natural Sand Replacement in Cement Mortar

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Authors

HKHashem Y. KailaniQatar University MIMohammad R. IrshidatQatar University

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Implication

Randomized trial investigates recycled sand's performance in mortar, highlighting its sustainability benefits.

Key Points

This study aims to evaluate the use of recycled sand from excavation waste as a sustainable alternative to natural sand in mortar production.
Prepared six mortar mixes with sand-to-cement ratios ranging from 0.50 to 2.75.
Assessed fresh and hardened properties including flow, density, water absorption, and compressive strength.
Performed microstructural and economic analyses comparing recycled sand with natural sand.
An optimal mix with an S/C ratio of 0.7 achieved a 28-day compressive strength of 48.8 MPa and a density of 2.147 g/cm3.
Higher S/C ratios resulted in reduced strength and increased water absorption, indicating performance trends.
Recycled sand mortar reduced material costs by approximately USD 2.4 per ton compared to conventional natural sand mortar.

Cite This Study

Kailani et al. (2026) studied this question.

synapsesocial.com/papers/6a72e7f4226790f3706574aa https://doi.org/10.3390/su18157873

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Technical Properties and Sustainable Reuse of Recycled Excavation Materials as Natural Sand Replacement in Cement Mortar

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Implication

Key Points

Cite This Study

Technical Properties and Sustainable Reuse of Recycled Excavation Materials as Natural Sand Replacement in Cement Mortar

Discussion

Member takes

Implication

Key Points

Cite This Study

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