Design Concrete Mixes. Compare Real Material Costs.
AstraMix AI is organized into two focused tools for civil engineers, batching plants, and concrete buyers: Mix Lab for validated strength prediction and multi-objective mix optimization, and Materials Market for comparing concrete ingredients and ready-mixed concrete across verified local branches, service-area suppliers, and national buying channels.
Strength Prediction & Multi-Objective Mix Optimization
Dedicated workspaces for predicting compressive strength from a known recipe or optimizing ingredient proportions under explicit constraints—with one-click transfer between both tools.
- Allowed Input Ranges: Displays exact supported bounds (`kg/m³` and integer curing age `1–365` days) with sliders, steppers, and preset curing chips.
- Three Understandable Result Cards: Predicted strength (MPa with RMSE uncertainty rules), Estimated ingredient cost (`/m³`), and Estimated embodied emissions (`kg CO₂e/m³`) with
Good/Normal/Poorrating badges. - Separate w/c and w/b Ratios: Distinguishes `water / cement` from `water / (cement + slag + fly ash)` and never labels an infeasible solve as an optimum.
Ingredients, Dry Mixes & Ready-Mixed Concrete Directory
Send your Mix Lab recipe directly to the Materials Market or search standalone orders across 100 countries and 62,964 GeoNames cities with strict category separation and honest pricing provenance.
- Country-Scoped GeoNames City Autocomplete: Search 62,964 cities across 100 countries (CC BY 4.0) with instant keyboard navigation and automatic reset on country change.
- Progressive Discovery & Quantity Tiers: Separates verified local branches and outlets, service-area suppliers, and national buying channels, with automatic bulk quantity tier pricing and whole-bag rounding.
- Strict Data Honesty: Separates branch-scoped stock from public price snapshots and quote-only suppliers. Customer reviews start empty (`0` fabricated ratings).
Supported Input Envelope vs. Engineering Qualification
The Mix Lab strength regressor (`XGBoost`, test RMSE `4.62 MPa`, MAE `3.03 MPa`, $R^2 = 0.917$) is bounded by the empirical 1,030-sample UCI Concrete Compressive Strength dataset.
Mix Lab Input Validation Contract (v1.0.0)
| Feature | Allowed Range | Unit | Validation Rule |
|---|---|---|---|
| Cement | 102.0 – 540.0 | kg/m³ | Required positive binder (`> 0` for `w/c`) |
| Blast Furnace Slag | 0.0 – 359.4 | kg/m³ | Included in total binder (`w/b`) |
| Fly Ash | 0.0 – 200.1 | kg/m³ | Included in total binder (`w/b`) |
| Mixing Water | 121.75 – 247.0 | kg/m³ | Full 1,030-row UCI minimum (`121.75 kg/m³`) |
| Superplasticizer | 0.0 – 32.2 | kg/m³ | High-range water reducer dosage |
| Coarse Aggregate | 801.0 – 1145.0 | kg/m³ | Crushed stone / gravel skeleton |
| Fine Aggregate | 594.0 – 992.6 | kg/m³ | Natural or manufactured concrete sand |
| Curing Age | 1 – 365 (integer) | days | Whole integer days (`1, 3, 7, 14, 28, 56, 90, 180, 365`) |