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Concra

Software for ready-mix

Your terms price the waiting.
Concra times it.

Published rates run from £1.25 to £4.50 a minute once the free time is gone. Concra timestamps arrival, waiting, discharge start and discharge end on every load and puts them on the docket. Built for our own plant, running in our own lorries.

The driver's screen in the cab, in Swedish: a map of the delivery point, the address Kv. Gjutaren etapp 2 in Helsingborg, the load 6 m³ of C35/45 XC2 for a pump and the planned delivery time 18:56. The order is marked På väg, on the way. Demo data.
The driver's screen on the road. Demo data.

01The minutes

The minutes are already in your terms

  • Mick George After 30 free minutes on site. £1.25 / min
  • Master Mix Beyond a 60-minute maximum. £2.50 / min
  • Rapid ReadyMix £2.50 a minute for mixers, £4.50 a minute for pumps. No free time at all. £2.50–4.50 / min
  • Brett, Gallagher Free time in writing, then “additional costs as it determines, acting reasonably”. —

Taken from producers’ own published delivery terms.

The first three are invoiceable the moment you can show the minutes. The last one is a conversation with the site, and it is held by whoever has the timestamps.

02The proof

Four times on every load

On site. Waiting. Discharge start. Discharge end. Each one timestamped as it happens and carried onto the docket.

The load panel on the driver's screen, in Swedish: 3 m³ of C30/37 for a pump, and under it the line Väntetid debiteras — waiting charged — with the clock at 48:08 running, left the plant 18:13, on site 18:43. Demo data.
Waiting time counting on the tablet while the lorry stands. Demo data.
The times and measured values on a finished docket, in Swedish, for 22 September 2026: planned 07:30, left the plant 07:04, on site 07:26, discharge start 07:41, discharge end 08:19, left site 08:25, and below that waiting time 15 minutes and discharge time 38 minutes. Demo data.
The docket, after the load. Demo data.

Weather at the delivery address is logged on arrival, then every hour for as long as the lorry is standing there. Concrete cures differently in sun and in rain, and nobody asks about the weather on the day.

The record stays with the load: times, address, weather.

03The chain

Order to invoice

Five steps. Four of them look after themselves.

  1. Step 1

    Order

    The order goes in at the office: customer, delivery address, mix, time.

  2. Step 2

    Tablet

    The driver sees the day’s loads on the tablet in the cab. Nothing to install.

  3. Step 3

    Position

    The lorry leaves the plant — the order goes live. It reaches the delivery address — on site.

  4. Step 4

    Docket

    Waiting, discharge start and discharge end are timestamped onto the docket.

  5. Step 5

    Invoice

    Every load ends as a billable line with its minutes attached.

The driver drives. The system writes.

Status comes from where the lorry is, not from what the driver has time to tap. Out through the plant gate, in at the address — the position handles it.

The tablet runs locked to one screen: today’s loads, nothing else.

A text when the lorry leaves the plant

The customer gets a text the moment the lorry pulls out: the arrival time in minutes, worked out on driving time in live traffic, and a tracking link that stays live for 24 hours.

The site can see the lorry coming, so they stop ringing to ask.

What sits in the cab

  • Standard Tablet An ordinary tablet, locked to the driver’s screen. No app to install.
  • Option PTO unit A unit in the lorry reads the power take-off over the vehicle’s CAN bus and marks discharge to the second.

04The lorry

Built in a working lorry

Concra was written for our own ready-mix plant. The tablet in the first lorry is still in it, and the loads go out on it every day. We batch and deliver concrete ourselves.

Tell us what your terms say

How many lorries you run, and what your delivery terms charge for time on site. We will go through what that looks like on your loads.

Contact Filip Olsson