Mar 2019 DIY CREATING COLOURFUL CONCRETE BOWLS
With a simple mix of coloured sand, cement and water, Sephaku Cement shows you how easy it is to make contemporary concrete bowls to beautify your home. Concrete creations, whether being used in construction, garden landscaping or home décor and other concrete ideas, is prepared using Portland cement, sand or gravel aggregates and conservatively mixed with water. The recipe stays largely unchanged regardless of its use but where most variations come in is with the type of aggregates that are incorporated into the mix. As already explored in previous Sephaku Cement article inserts, for the purpose of decor, the best mix to make use of when making concrete crafts is with a selection of the finest granular aggregate available. The finer the sand used, the smoother the mix that ultimately results in an even textured finish to your craft, and as if the aggregate was the secret ingredient to creating the perfect concrete craft, add a splash of colour to the aggregate sand to breathe unique life into your design.
Versatile, consistent and cost effective, Sephaku 32 is a general purpose, normal strength blended cement perfect for home and DIY projects that offers lasting durability. Best put to task by Wheel Barrow Builders and Home DIY Enthusiasts, to follow Sephaku Cement lays out, in easy to follow steps, the process to making your own coloured contemporary crafts using Sephaku 32.
What you will need:
- Disposable and preferably plastic bowls resembling the ideal shape to mould your coloured craft in
- A measuring cup and 1 tablespoon for measuring.
- Dust mask and protective gloves
- A disposable mixing bowl
- 1 Bag of Sephaku 32 or Sephaku 42N
- Coloured craft sand
- “Spray and Cook” / aerosol oil
- Water to mix
An important safety tip to adhere to when mixing cement is to always use a dust mask and protective gloves (and clothing). Not only is it harmful to inhale the powdery cement particles, keep in mind that cement is alkali and reactive and gives off heat during hydration which can burn your skin.
Depending on the desired colour intensity when blending your cement craft mix you can use either use;
- Half a part of coloured aggregate to 1 part of Cement
- Equal parts of coloured aggregate to part Cement
- Two parts of coloured aggregate to 1 part Cement
- Three parts of coloured aggregate to 1 part Cement
Blend one of the above options with 1 Tablespoon (15ml) of water for approximately every 60ml sand and cement (combined volume).
Mixing Made Easy
Protected by your dust mask, blend the dry ingredients, namely the coloured aggregate sand and Portland cement measurements together. Slowly add accurate water amount, blending the mix slowly, taking your time during this process prevents the mix from resulting in a too wet and runny consistency. For the ideal texture, your coloured concrete/mortar mix should resemble a slightly dry but soggy ball similar to that of thick porridge.
Ready, Mould, Set
Spray the inside of one and the outside of the other of your disposable cement moulds using “Spray and Cook” or any spray on oil product. This will assist in the separation of the disposable bowls once the concrete has cured. Once prepared, fill the concrete mould (sprayed on the inside with the aerosol oil) with your “stiff peak” cement mix. Now press the second bowl (oiled on the outside) into the centre of the cement and secure in place with a weight being careful not to press this too far down. Allow to cure for 24 hours following which carefully separate the inside mould and then the outer concrete mould to reveal your coloured concrete creation! Complete your craft’s finish with sand paper on rough edges and by sealing the concrete which will improve its overall appearance and prevent efflorescence, a powdery masonry salt seepage should your creation come into contact with moisture.