My son 4 year old keeps bringing out that wants to make concrete. I am materials angineering graduate so concrete making is one of my specialities. Of course concrete will done unde my control and supervision. For concrete, we need tiny quanities 100 g of cement, good quality sand, good quality gravel and a clear , special box ( glass is corroded by cement) to set it in. Any ideas?
Our hardware store in saitama city sells dry concrete 25 kg and you can 8 kgs online (2kg if you spend 200 yen on something else on Amazon.
Our hardware store in saitama city sells dry concrete 25 kg and you can 8 kgs online (2kg if you spend 200 yen on something else on Amazon.