Tech Park, LEED Gold Certified
Project overview
A 4-block tech park targeting LEED Gold required low-embodied-carbon concrete with verified EPDs. Alpha Green delivered 6,200 m³ across M30 and M40 with 50% GGBS replacement, achieving a 45% reduction in embodied CO₂ versus the regional baseline. Full EPD documentation supported the LEED MR Credit 5 submission.
Sustainability-led commercial campus; LEED v4 BD+C scorecard; client procurement required EPD evidence.
The challenge
Low-carbon spec with LEED-grade documentation.
- ›50% SCM replacement without compromising 28d strength
- ›EPD per ISO 14025 for every grade
- ›Strength gain still meeting fast slab cycle
- ›Documentation chain auditable by LEED reviewer
The solution
Alpha Green mix with 50% GGBS, third-party verified EPD per grade.
- ›50% GGBS replacement, M30 and M40
- ›ISO 14025 EPDs per grade, third-party verified
- ›Extended curing protocol (10 days)
- ›Audit-ready batch tickets and CO2 ledger per delivery
Execution detail
6,200 m³ delivered; full EPD chain submitted with LEED docs.
- ›Embodied CO2 reduction: 45% vs baseline
- ›M40 28-day mean: 45.6 MPa
- ›Slab cycle held at 8 days with extended curing
- ›100% deliveries with EPD-tagged batch tickets
The result
LEED Gold awarded; MR Credit 5 evidence accepted on first review.
"The EPDs landed without a single follow-up question from the LEED reviewer."
— Sustainability Lead (anonymized)
Technical specifications
| Grade | Cement (kg/m³) | SCM | w/c | Slump |
|---|---|---|---|---|
| M40 | 190 | GGBS 190 | 0.4 | 125±20 |
| M30 | 170 | GGBS 170 | 0.45 | 100±20 |
QC: EPD per grade, per-load CO2 ledger
Products used
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