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ANSWERS: 16
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calcium i think
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It is relatively simple a molecule made of 12 atoms of carbon, 22 of hydrogen, and 11 of oxygen.
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You need a high strength admixture. http://cat.inist.fr/?aModele=afficheN&cpsidt=3568684
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Crazy Glue
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You could try giving it some steroids, but if your professor tests for performance enhancing drugs you may be up a creek.
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if you add long fibres (fibreglass, carbon fibre, any aramid fibres, etc.) into the matrix (concrete in this case). this will only strengthen the concrete if the loading force is parallel to to the orientation of the fibres. there are equations that will give you the minimum length needed to strengthen them, & the amount of increased toughness.
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steel reinforcement may be the thing rather than continuing to add chemicals
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Try rebar.
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I know that you can make it very strong by keeping it wet. Mix it as dry as possible, pour it immediately after mixing (it starts to set right away, and will be less hard if you disturb it once it's started to set), pour the stiff mix on wet ground or plastic, tamp it down quickly, and cover it with plastic so as to keep all the water in the cement. Lift the plastic as needed to sprinkle more water over the setting cement. Make sure the temperature stays above 40 degrees. If it's going to get colder at night cover the freshly poured cement with blankets or foam insulation -- the setting mix will generate some heat.
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try adding flubber.
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Extra portland cement, add fiberglass, rebar or screen. Or you can use a higher cement to sand mix.
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cruh up dimonds add preasurized carbon and melted steel if you want even strnger add zinc & sulfite
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Molasses was added to concretes/cements to make them stronger. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TWG-4F1J8HN-2&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_version=1&_urlVersion=0&_userid=10&md5=09c75c973776b95a55d3ecb5fdaac7f8 Egyptians were doing this back when they build the Pyramids... Your off the shelf bag of concrete mix is already well proportioned and balanced for optimal strength. Whilst concrete has great strength under compression, we use things like rebar to give it 'spanning' strength. We use steel, bad idea since in 25-50 years steel even embedded in concrete rusts, expands and causes the concrete to fault. Aluminum and other non-corroding (they corrode but stop as soon as they have a patina) are best for long, very long life. Mechanical additions, fibers for instance gives concrete greater strength over all. Romans used Volcanic ash in a similar fashion as we use fiberglass. And their structures are still standing.
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Aluminum Powder+ Volcanic Ashes Aluminum Powder + Granit
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cocrete is very strong already but u never use it directly in structure even if u made it 100% strong by adding any chemical in amorphous form. THE only way to strenghthen the concrete is to add steel rods or mesh of rods it is very old but successful method of strengthing concrete structure for making towers and buliding
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