Calibrated durability. Acoustic mass and circular precision.
Every Common Ground object and architectural panel is engineered from reclaimed spent coffee grounds, blended with bio-based binding matrices. Built to exceed commercial interior load, thermal, and hygiene benchmarks.
Upcycled Spent Grounds
Dehydrated & granulometry sorted
Non-Toxic Bio-Resin
Plant-derived cross-linking agent
Embodied Carbon Offset
Avoided landfill methane per kg
Designed for heavy-traffic contract furniture, wall claddings, retail counters, and acoustic object installations.
Require physical swatch binders?
We deliver curated tactile specimen kits to licensed architectural and interior practices worldwide.
Contact Materials Desk| Parameter | Measured Value | Standard Test | Benchmark Context |
|---|---|---|---|
| Compressive Strength | 68.4 MPa | ASTM C39 / EN 12390-3 | Surpasses standard high-density architectural terrazzo (55 MPa) |
| Shore D Hardness | 84 Shore D | ASTM D2240 / ISO 868 | Comparable to solid surface acrylic and engineered resin composites |
| Flexural Modulus | 4.2 GPa | ASTM D790 / ISO 178 | Exceptional resistance to cantilever deflection under load |
| Scratch & Abrasion Resistance | Class 4 (Heavy Commercial) | ASTM C501 / Taber H-22 | Tested for 10,000 continuous cycles with minimal surface haze |
| Impact Resistance | 14.8 kJ/m² | ISO 179 / Charpy Notched | High fracture resilience due to cross-linked lignin fiber matrix |
Coffee-Toned Natural Chromatics
100% natural hue formulation achieved solely through roast depth variation and bio-mineral blends. Zero synthetic dyes.
Light Roast Oat
65% Spent Grounds • 35% Mineral Composite
Finely milled grounds layered with crushed chalk and calcium minerals for a serene, tactile finish.
Medium Roast Earth
74% Spent Grounds • 26% Plant Binder
Balanced granulometry highlighting natural fleck textures with a warm roasted warmth.
Deep Espresso Monolith
82% Spent Grounds • 18% Bio-Resin
Maximum density formulation yielding deep acoustic mass, dark monolithic tones, and polished sheen.
Light Roast Oat Architectural Grade
Available in standard slab dimensions (2400 × 1200 mm) or cast directly to custom 3D molds.
From Spent Extraction to Monolithic Permanence
Every architectural surface produced at Common Ground follows a rigorous, zero-petrochemical 5-stage transformation sequence. We convert unstable organic food waste into calibrated, high-density composite stone engineered for hospitality and commercial interiors.
Café Batch Collection
Direct municipal collection partnerships with specialty hospitality venues and roasteries. Grounds are harvested within 24 hours of extraction, cataloged by roast density, and transported in sealed food-grade containers.
- Same-day harvest protocol
- Traceable single-origin roastery network
- Zero-waste transport totes
Dehydration & Granulometric Sifting
Low-energy solar-assisted thermal beds extract volatile residual moisture below strict laboratory thresholds. The dried mass undergoes triple-stage rotary sieving to separate fines from structured structural grains.
- Closed-circuit heat recovery
- Sub-micron dust containment
- Uniform granulometric sorting
Biopolymer Compounding & Mold Casting
Sifted coffee grounds are vacuum-blended with high-performance plant-derived binders. The homogenous composite paste is precision-poured into machined elastomeric and aluminum architectural master molds.
- VOC-free bio-epoxy binder
- Void-free vacuum degassing
- Custom architectural molds
High-Pressure Hydraulic Curing
Subjected to isostatic hydraulic pressure and calibrated thermal cycles. This molecular densification aligns the organic cell structures, resulting in granite-like compressive strength and superior acoustic damping.
- Dimensional stability under load
- High acoustic absorption NRC 0.65
- Thermal crack resistance
Architectural CNC & Surface Finishing
5-axis CNC machines mill joinery details, beveled edges, and tactile relief patterns with sub-millimeter accuracy. Finished slabs receive multiple micro-coats of natural carnauba and linseed sealants for stain and moisture defense.
- Food-safe matte botanical finish
- Commercial hospitality rating
- 100% circular end-of-life recyclable
Need tailored material density sheets for your architectural specification?
We supply commercial specifiers, procurement teams, and interior architects with full mechanical test reports, fire ratings, and material safety data.