Studio 01 — Mix Design

A mix that holds up, drafted in conversation.

Describe the element, the exposure and the target strength in plain language. Miksir walks the code tables — ACI 211, EN 206, TS 500, BS 8500 — resolves the exposure class, and returns proportions with a full compliance checklist you can defend.

4 codes ACI 211 · EN 206 · TS 500 · BS 8500
18 classes XC · XD · XS · XF · XA exposure resolution
Per design compliance checklist + PDF export
TRIAL BATCH — C30/37 · XS2 · S2
SLUMP ≈ 90 MM · S2 SLUMP CONE — 300 MM MOULD · EN 12350-2 0.45 0.30 0.70 MAX 0.50 (XS2) WATER / CEMENT RATIO
CEM I 42,5 — 360 KG/M³ 20 MM AGG — 1,065 KG SAND — 705 KG WATER — 162 L ✓ MIN COVER 45 MM

How it works

A design conversation, not a form to fight.

STEP 01

Tell it what you're pouring

Type the element, environment and performance in your own words — "C30 for a coastal retaining wall, 28-day, pumpable." Miksir asks clarifying questions where they matter (cement type, aggregate size, admixtures) instead of making you fill twenty blank fields.

STEP 02

Exposure class, resolved

From the environment you describe, Miksir resolves the governing exposure classes — carbonation (XC), chlorides (XD/XS), freeze-thaw (XF), chemical attack (XA) — and pulls the deemed-to-satisfy limits: maximum w/c, minimum cement content, minimum strength class and cover.

STEP 03

Proportions from the code, not a guess

It walks the selected standard's method — ACI 211 absolute-volume, or EN 206 / BS 8500 / TS 500 tabulated limits — to a full mix: cementitious content, water demand, coarse and fine aggregate, and the resulting water/cement ratio, all in one batch table.

STEP 04

A compliance checklist you can sign under

Every design ships with a line-by-line checklist: each governing limit, the value achieved, and whether it passes. Where a target and an exposure limit disagree, Miksir flags the binding constraint rather than quietly picking one.

STEP 05

Batch it, export it, keep it

Scale from a lab trial batch to a full truck and export the proportions and checklist to PDF. Every design is saved to your history, so last month's coastal mix is one search away when the next job looks the same.

What's under the hood

Four codes, one conversation.

Specify to the standard your client audits against — Miksir keeps the tables straight.

STANDARDS

The books it reads

Switch the governing code per project; the exposure tables, limits and strength-class notation follow.

ACI 211.1 — absolute volume EN 206 + BS 8500-1/2 TS 500 durability limits C8/10 → C50/60 classes
EXPOSURE

Environment to limits

Each class carries its own deemed-to-satisfy ceiling on w/c and floor on binder content and cover.

XC1–4 carbonation XD1–3 · XS1–3 chlorides XF1–4 freeze-thaw + air XA1–3 chemical attack
OUTPUT

What lands on your desk

A defensible one-page design: proportions, w/c, slump class, the checklist, and the assumptions made explicit.

Batch table — trial → truck Pass/fail compliance list Slump class S1–S5 PDF export + design history

Free to start · no card required

Your first three mix designs are on the house.

Describe a pour, resolve its exposure, and export a compliant design in the next five minutes.