Sustainable Alternative for the Production of Soil Cement Bricks
Bibliographic record
Abstract
The construction industry plays a fundamental role in the economy of a developing country, representing, in most of them, approximately 3.7% to 10.5% of its Gross Domestic Product. However, it is extremely important to search for sustainable alternatives in this sector, aiming to reduce the environmental impacts generated by the production of inputs, waste generation, in addition to the inappropriate disposal of this activity in the environment. Therefore, the work aimed to evaluate the technical and economic feasibility of the incorporation of residues (Marble and Granite Cutting Waste—MW and Construction and Demolition Waste—CDW) in the production of soil cement bricks (SCB). For the development of the present work, physical and mechanical characterization of the soil, residues (CDW and MW), composites (Control, MW15%, MW25%, MW50%, MW100%, MW30%CDW70%) were performed. After manufacturing the bricks, the characterizations mentioned were carried out at 7, 28 and 60 days, in addition to the evaluation of the geometric characteristics, water absorption and strength of the bricks and microscopic analysis of the post-rupture fragments. Additionally, a cost analysis of the use of SCB was performed compared to two different construction systems (ceramic brick and concrete block). From the results of physical characterization, soil was classified as clayey-silty sand (SC-SM), while the CDW was well-graded sand and MW as sandy clay. Soil and composite plasticity characteristics ranged from weakly plastic (MW15% and MW30%CDW70%) to highly plastic (MW100%). In the compaction tests, composites with the addition of MW presented increasing values in terms of optimal moisture. The compressive strength test performed showed satisfactory results for all composites, especially for MW25%, which obtained the most significant result with 13.777 kPa at 28 days. Thus, it is concluded that the incorporation of CDW and MW for the production of SCB represents a sustainable application for civil construction.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".