What does this research mean for the field?

Alkali-activated bricks composed of 90% ground granulated blast furnace slag, 10% sodium metasilicate, and 100% overburden waste sand meet Class-I criteria and possess sufficient physio-mechanical properties for load-bearing construction applications. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To formulate sustainable Class-I load-bearing building bricks by utilizing coal mining overburden waste sand with alkali-activated binder materials.

August 24, 2026Discover Concrete and CementOpen Access

Development of class-I alkali-activated bricks using overburden waste sand

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Authors

SNSanchita NawaleVisvesvaraya National Institute of Technology RRRahul V. RalegaonkarVisvesvaraya National Institute of Technology

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Implication

Experimental study demonstrates high compressive strength in alkali-activated bricks using overburden waste sand, suggesting a sustainable alternative for load-bearing masonry.

Key Points

To formulate sustainable Class-I load-bearing building bricks by utilizing coal mining overburden waste sand with alkali-activated binder materials.
Manufactured 25 distinct mixture formulations incorporating ground granulated blast furnace slag (GGBS), fly ash (FA), overburden waste sand (OWS), and anhydrous sodium metasilicate (SMS).
Characterized raw materials using particle size distribution (PSD), X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy (SEM) under ambient curing.
Bricks satisfied Class-I specifications (IS 3495 (Part 1-3), 1992), exhibiting a water absorption rate of 5.25% and a bulk density of 2094.862 kg/m³.
The optimal mix design consisting of 90% GGBS, 10% SMS, and 100% OWS cured under ambient conditions achieved a peak compressive strength of 14.84 MPa.

Cite This Study

Nawale et al. (2026) studied this question.

synapsesocial.com/papers/6a8c005bbca056c88e6df1c7 https://doi.org/10.1007/s44416-026-00109-w

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Implication

Experimental study demonstrates high compressive strength in alkali-activated bricks using overburden waste sand, suggesting a sustainable alternative for load-bearing masonry.

Development of class-I alkali-activated bricks using overburden waste sand

Discussion

Member takes

Implication

Key Points

Cite This Study

Development of class-I alkali-activated bricks using overburden waste sand

Discussion

Member takes

Implication

Key Points

Cite This Study

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