If CCMC (cleva crete modified concrete) is a pozzolanic rich admixture that has a blaine of approximately 20,000, how does this effect it’s set times?
CLEVA-Crete has a blaine of over 20,000, which gives it a mass of reactive surface area per kg. It is not a cement, it is a pozzolan so it creates additional purer amorphite types of C-S-H, however this does not make the CCMC go off that much faster than control. Silica fume also has a blaine of 20,000, yet would not go off a lot earlier. Silica fume just makes the concrete stickier and holds up well in rheology, whilst CLEVA-Crete replaces it, CCMC is not as sticky to work with or finish.
CCMC will have properties very similar to any other concrete you have batched. When it gets to site and is poured in place, screeded and being finished, it will set up the concrete a little bit earlier but it only means that the grano’s don’t need to wait around the normal typical 1-2 hours waiting for all the bleed water to come up, otherwise there is no real difference.
If cleva-crete sets earlier than a control mix, does that mean that it’s harder to clean out the agi’s?
CCMC cleans off easier than normal concrete because the gel that is created, delays the paste from going rock hard.
What cost is it per cube?
We offer the same wholesale price to all concrete suppliers, respective of whom they are, purchasing volumes or geographical location. CLEVA-Crete is sold by the litre, and you will typically use 2 litres per cube depending on the mix design, MPa, cement volume, SCM’s and w/c ratio.
CLEVA-Crete only supplies wholesale product to ready mix providers.
To get information on price, please call 1300 503 929 for your nearest representative.
What are the payment terms?
Payment terms are 30 days from the date of invoice.
Why are we required to give you our mix design?
CLEVA-Crete is normally dosed at about 2 litres per cube for a lot of mix designs, but our trained dosing officers require the mix design including information on what SCM’s are being used and at what percentages and most importantly, it is essential to find out the water/cement ratio of your mix design.
The technology only uses up the free water that is in the concrete matrix and does not require any additional hydration water during the dicalcium silicate hydrate and tricalcium silicate hydrate stages. Our lab will use the ‘powers model’ for getting the product balance exactly right so we do need cooperation with the full mix design. It is not uncommon for us to sign an NDA for certain projects, so that sensative information is protected and we are happy to discuss any such concerns.
Why do you require use of your special pump? Why can’t we use our normal pumps and a spare tank that we have at the batch plant?
CLEVA-Crete is an extremely high quality super fine material and when it dries in a normal rubber or steel impeller pump, there is the risk that it can cause damage to equipment and the impeller blade.
Our air driven twin-diaphragm pumps, have proven to be the most reliable option over the last 25 years. Our fluid controller talks directly to your batch plant computer. We install our pump free of charge and if you don’t have a tank available, we will install a type and size that will suit and fit into your plant. Many batch plants utilise normal IBC’s.
What are your delivery arrangements?
We bulk deliver to batch plants daily. To get a next day delivery, the office or your rep in your state, must have your PO by 12.00 noon, the day before.