Duramix Skylight Construction Ltd.

Fromheadpanto bag.

Taking the guesswork out of Ghana’s concrete.

Nana MansoFounder, Skylight Construction Ltd.

Presented by David Agbemabiase, Sales & Marketing

Swipe up

Ghana is building

1.8 million
homes short.

Every one of them will start with concrete. Most of that concrete is still mixed by hand, on site.

58%of Ghanaians now live in towns and cities
3.3%growth in the urban population every year
170,000homes needed every year for 10 years to close the gap

SourcesMinistry of Works and Housing; Daily Graphic. Aerial: Accra.

How it is done today

Most concrete
is still made
by hand.

  1. Measured by the headpanCement, sand and stone counted out by the pan, not weighed.
  2. Mixed on the groundTurned with shovels on bare earth, beside the heaps.
  3. Water added by eyeMore water until it looks workable. This is where strength is lost.

Visualisation

The hidden variable

More water,
weaker
concrete.

Water makes concrete easier to work, but every extra litre costs strength. On site, water usually goes in until the mix looks right.

Bottom scale: litres of water per 50 kg bag. 0.40 = 5 kg water ÷ 12.5 kg cement.

How to read the chartBottom scale: litres of water per 50 kg bag of Duramix. 0.40 = 5 kg of water ÷ 12.5 kg of cement in each bag (1 litre of water weighs 1 kg).

SourceStrength curve: ACI 211.1, Table 6.3.4(a), non-air-entrained concrete at 28 days. Litres per bag assume 12.5 kg of cement in each 50 kg bag. Typical 1:2:4 site mix: nominal design range.

The burden

All of it lands
on the builder.

  • 3 purchasesCement, sand and stone, each bought separately
  • 3 deliveriesThree trips and three heaps on site
  • LossesSand washed away, cement set hard, stock gone missing
  • Extra labourTo batch, carry and mix every load
  • No two alikeEvery batch comes out different
Duramix Concrete Mix 50 kg bag, front

The answer

Meet
Duramix.

Portland cement, sand and graded stone, dried, weighed and blended at our plant to one fixed recipe. Every bag mixes the same.

Cement, sand and stone, dried, weighed and blended to one recipe. Every bag mixes the same.

Strength
M40 · 5,800 psi
Bag
50 kg, multi-purpose
Use for
Foundations, slabs, stairs, columns
Water
5 litres per 50 kg bag
Back of the Duramix bag with mixing and storage instructions

On site

Just add
water. (5 L per bag)

  1. Empty the bag into a mixer or a clean wheelbarrow
  2. Add 5 litres of clean water per bag, a little at a time
  3. Mix until smooth and even
  4. Place it straight away

Mixing steps printed on every bag

Made in Ghana

Our plant
in Offinso.

Offinso-South, Ashanti Region, on the road north of Kumasi. Built to dry, weigh, blend and bag concrete under one roof.

Offinso-South, Ashanti Region. Drying, weighing, blending and bagging under one roof.

Built in Ghana, for Ghana

Kumasi Accra OffinsoDuramix plant

Beyond the bag

Concrete, on site
and on demand.

Volumetric mixer

Mixes fresh concrete on site, in the exact amount ordered. Already in Ghana.

Concrete mixer pump on a building site in Kumasi

Mixer pump

Mixes and pumps concrete straight to the pour, including upper floors.

Bulk cement trailer

Moves cement in bulk, sealed from the weather, to keep the plant supplied.

Visualisations

For engineers, architects and quantity surveyors

For engineers, architects & QS

What changes
for you.

Specify it, get itM40 in every bag, from the first pour to the last.
Fewer variablesBatching is done at the plant. On site, only the water is left to control.
Easier to costOne product, one bag count, less waste to allow for.
Cleaner sitesNo heaps of sand and stone, fewer deliveries, less to store and guard.

Let’s build
Ghana right.

Nana Manso
Founder, Skylight Construction Ltd.
WhatsApp
Email
sales@skylightgh.com
Web
skylightgh.com
Email sales@skylightgh.com
QR code that opens a WhatsApp chat with Duramix
Scan to chat
on WhatsApp

Duramix Concrete Mix
Skylight Construction Ltd. · Offinso-South, Ashanti Region, Ghana

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