THE RESULT
What the data shows
The largest computed metric is 51.02 for (0.0, 0.2]; the smallest is 28.43 for (0.4, 0.6]. Metric: median_strength (MPa).
No emissions or costs are supplied; a replacement fraction cannot establish a sustainability benefit.
| fraction band | samples | median strength | p10 |
|---|---|---|---|
| (-0.001, 0.0] | 80 | 32.01 | 19.69 |
| (0.0, 0.2] | 13 | 51.02 | 37.82 |
| (0.2, 0.4] | 141 | 40.93 | 26.91 |
| (0.4, 0.6] | 120 | 28.43 | 13.28 |
| (0.6, 1.0] | 71 | 31.03 | 24.58 |
THE METHOD
From source to answer
Restrict to 28-day tests, then summarize strength by slag-plus-fly-ash share.
The Python source exposes this study’s transformations. The complete project download includes shared preparation and evaluation routines.
THE NEXT DECISION
What follows from the finding
Investigate comparable alternatives using additional durability, cost and embodied-carbon evidence.
Where the conclusion stops
Laboratory observations do not certify a construction mix. Composition and curing conditions are confounded. Models require independent engineering validation and cannot replace strength testing.
Related studies may reuse observations or holdouts. These are historical analyses; associations and backtests do not demonstrate commercial impact. Further model tuning needs new, untouched evaluation data.