Carbon Reporting On East Anglia Projects: What’s Changing
More tenders across Suffolk, Norfolk, and Essex now ask for declared carbon with your concrete. Public sector frameworks, major housebuilders, and commercial clients are aligning with BREEAM and PAS 2080. They want clear, comparable numbers for Scope 3 (purchased goods and services) reporting.
You will typically be asked for an EPD and a CO2 figure per m3 for the proposed mix. Provide: strength class, binder type (OPC, GGBS, PFA), source plant, and the declared kgCO2e/m3 (A1–A3). If you are unsure how to frame this in a bid, our technical advice pages cover what we can supply at quote and delivery.
EPDs Explained In Plain English
An Environmental Product Declaration (EPD) is a verified, standardised report to EN 15804+A2 and ISO 14025. It sets out impacts for A1–A3 (raw materials, transport to plant, manufacture). Some EPDs add A4 (delivery) and A5 (site), but many are cradle‑to‑gate only (A1–A3).
Plant‑specific EPDs reflect actual materials and the batching site, so reviewers prefer them over generic averages. To quote a number, use the declared unit for concrete: kgCO2e per 1m3 for A1–A3. Multiply this by your pour volume to estimate emissions.
Example: 180 kgCO2e/m3 × 120 m3 = 21,600 kgCO2e (21.6 tCO2e) for A1–A3. For how on‑site production supports evidence, read how our volumetric concrete mixers work.
Typical Embodied Carbon By Strength Class (Indicative Ranges)
Use these ranges for early estimates only. Final figures must come from the supplier’s plant‑specific EPD for the actual mix and plant.
- C8–C15 (blinding, kerbs, haunches): OPC 180–260 kgCO2e/m3; 30% GGBS/PFA 150–220; 50% GGBS 120–190.
- C20–C30 (slabs, footings): OPC 280–380; 30% SCM 220–320; 50% GGBS 170–260.
- C35–C50 (higher strength): OPC 330–500; 30% SCM 260–420; 50% GGBS 210–350.
Aggregate type, cement source, admixtures, and water reducers all affect results. For ordering guidance, see ordering low‑carbon concrete with GGBS/PFA and recycled aggregate.
This image was generated with AI and may not always represent the product or service exactly.
GGBS And PFA: Low‑Carbon Options That Still Meet Spec
GGBS (ground granulated blast‑furnace slag) and PFA (pulverised‑fuel ash) replace a portion of OPC. Typical levels are 20–30% for general work. Where programme allows, 40–60% GGBS gives larger carbon cuts. SCMs can slow early strength gain, especially in winter, so plan finishing and saw‑cuts accordingly.
On Suffolk clays, DC classes and sulphate resistance often matter. GGBS/PFA mixes can help, as can the right cement type and admixtures. In marine and coastal zones around Lowestoft and Great Yarmouth, SCMs support durability. For winter pours, consider accelerators or timing tweaks; our cold weather concreting checklist sets out practical steps.
Volumetric Mixing: Cut Waste, Cut Carbon, And Firm Up Your Tender
With volumetric supply you only pay for what you lay. No over‑order, no returns, and fewer wasted miles. We can adjust slump, fibres, and entrained air on site within the approved design window to avoid re‑mixing and delays.
Our metered tickets show exact m3 delivered, time on site, and batch details. That makes reconciliation against the EPD value straightforward and credible. For more ways this reduces waste and Scope 3, see volumetric concrete waste savings.
Building Tender‑Ready Carbon Evidence
- Pre‑tender: assume a strength class and SCM level (e.g. 30% or 50% GGBS) and use a credible A1–A3 figure for estimates.
- At delivery: attach the batch ticket and the relevant plant‑specific EPD reference (document ID, version, and date).
- Post‑pour: reconcile actual m3 poured × EPD kgCO2e/m3. Keep this for claims, KPIs, and audits.
This approach de‑risks allowances and supports value engineering by showing the programme and cost effects of higher SCM options.
Common East Anglia Use‑Cases And Low‑Carbon Mix Choices
House foundations on Suffolk clay: consider 25–40% GGBS with the right sulphate‑resistant cement where required. Watch early strength in colder months and plan strip times. Trench fill benefits from steady placing and a consistent slump to reduce rework.
Warehouse floors on the Ipswich–Colchester corridor: C30/37 with 30–50% GGBS can widen the finishing window and reduce heat of hydration. Fibres are an option alongside joints. Farm yards and tracks across Norfolk and Suffolk need abrasion resistance and drainage falls; see our guide to agricultural yard concrete for practical detailing.
This image was generated with AI and may not always represent the product or service exactly.
Ordering Low‑Carbon Concrete With Eco Concrete Ltd
When you book, tell us: site address and access, strength and exposure class, target GGBS/PFA %, slump, fibres, pour date/time, finishing plan, and any EPD or tender needs. We confirm plant‑specific EPD availability, allocate a volumetric slot, and issue batch tickets on the day.
Quantities are flexible. If you need more, we make more; if you need less, you do not pay for unused concrete. Our team also offers wheelbarrow support for tight access and domestic drives when booked in advance.
FAQs: EPDs, Mixes And Delivery
Can we adjust OPC/GGBS on the truck? We can alter cementitious proportions within approved windows and QA controls. Significant design changes should be agreed before the pour so the EPD reference and cube regime still apply.
Do SCMs delay finishing or saw‑cuts? They can extend set and early strength gain, more in winter. Plan joints and finishing windows accordingly and consider accelerators if the programme is tight.
What if the volume changes on the day? With volumetric supply we batch exactly what you use. If you need less, you save; if you need more, we keep producing until the pour is complete.
Get A Carbon‑Priced Quote Today
We’ll send a fixed quote with the proposed mix, target GGBS/PFA %, indicative kgCO2e/m3 from our plant‑specific EPD, delivery plan, and optional wheelbarrow support. Same‑day or next‑day is often possible across Suffolk, Ipswich, Woodbridge, Bury St Edmunds, Lowestoft, Norfolk, and Essex.
Ready to price with carbon included? Get in touch via our contact page and we’ll come back quickly with options that fit your programme and spec.
FAQs
Do you provide plant‑specific EPDs for all mixes?
We provide plant‑specific EPDs for our standard mix families. If a bespoke design is needed, we’ll confirm the nearest valid EPD or arrange a project‑specific declaration pathway.
Can you include A4 delivery emissions in our figures?
Yes. Our job data includes mileage and time on site, so we can estimate A4 where required. Most tenders still compare on A1–A3; we’ll state what is included.
How accurate are your volumetric meters for audits?
Our trucks are calibrated and tickets record the metered volume and constituents. This is accepted on local frameworks as reliable evidence for reconciliation.
What lead time do you need for higher GGBS in winter?
Ideally 24–48 hours to line up materials and any accelerators. Tell us your strip targets and we’ll advise on curing and joint timing.
Can you match a competitor’s stated CO2 for a mix?
We can propose equivalent strength, durability, and SCM levels with our plant‑specific EPD. Final numbers depend on local materials and the exact design.