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FAQ ON C-MAX(1) What is the C-Max and why it is called so? (Ans) C-Max is a newly developed polymeric additive for cement and it is called C-Max, because, it maximises the cement surface area and it makes use of each and every particle of cement for the purpose of its use. Cement is not only a binder, but also one of the best water proofing agents. Due to this binding capability, after manufacturing and during storage, the finer grains mingles with each other and give the cement a dense structure. Once the polymer, i.e. C.-Max is added, each and every grain is loosened and the same cement occupies more area and this can be shown very easily in an experiment, taking two glass of water, wherein, same quantity of cement is added. In one glass, add C-max as recommended, stir it and see the results for yourself. (2) Does C-Max reduce cement & water ratio? (Ans) Yes, C-Max helps in reducing the cement & water ratio & decreases the quantity of water by 30-40%. (3) If the cement surface area is expanding, will it swell the concrete mass or the plaster? (Ans) No, the addition of C-Max releases the fine grains of cement, which are cogulate and this action does not create any force. So, the question of surface area expansion or swelling does not arise. Through the sliding action of particles, increased surface area is absorbed in a mass, (4) Where does the expanded or maximized cement go in the mass? (Ans) If you see the structure of concrete or a cement & sand block or if you test the porosity of cement as per IS approved method, then you will find that, porosity level are as high as 35% in a concrete mass. This porosity only absorbs and retains moisture to give raise to problem of water seepage in due course of time. If you add C-max, then the cement surface area increases & penetrates in to all these pores and reduces the porosity, to a level of 3%. (5) What is meant by 3% porosity and what is the most ideal addition rate of C-Max and what happens, if more and less quantity is added? (Ans) The best examples can be given by telling about the materials like, Marbles and Granites. Best of Marbles have porosity between 5-8% and Granites have porosity between 2-3% and that is the reason, the water can not seep through Granites. But, some times, it goes through the marbles. So, now, you can know that, 3% porosity achieved in a concrete mass, will affect the water proofing properties is what manner. Most ideal rate of C-Max is 1.0-1.2% of cement. If more quantity is added, then it looses its effect and you may not get the desired results, because the polymer will once again acts as adhesive and will have a negative effect by reducing area, instead of increasing. Less than 1% addition rate, is also not good for the purpose of water proofing, because, the porosity level will be higher as expansion of surface area is up to 30-40% instead of 80-100% at 1% addition rate. (6) Does the addition of C-Max affect the strength in any manner? (Ans) Strength of cement is directly proportional to the sand and metals used in the concrete. However, by adding C-Max, comparative strength will increase by about 10-15%. It will reduce the porosity drastically at 1% addition level as explained above. (7) Can you touch C-Max with hand without any precautions? (Ans) Yes, C-Max is water soluble and water dispersible and it can be touched with naked hand. it is also chloride free. (8) Does C-Max helps in faster setting of cement? (Ans) Yes, it will helps in faster setting of cement. Curing will be faster, as compared to normal cement used without addition of C-Max. (9) Does the expansion in surface area increase the volume of water? (Ans) No, increase in volume of water is directly proportional to the weight of cement put inside the water and later on, after addition of C-Max, the weight of cement is not increased. Only the surface area increased. So, there is no questions of water level rising.
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