Before you all start, last week I purchased a bag of cement and a bag of sand, they had no orange sand only grit sand and said it would be ok only its darker. I thought it would be better for my little cobbled area which I am doing in the garden and the darker mix would be more authentic. Yesterday I ran out of sand so back to the merchants and bought another bag of grit sand. I got home and done my 3 parts sand bit and 1 part cement with a dash of washing up liquid. I noticed the sand was really dark but thought ah well it supposed to be darker this must really be from the pits. I added my water and began to mix. This time I noticed a smell and it smelt like WET SOIL. I double checked the bag of sand (which are not marked just have the firms name on) and felt and felt and felt. I thought this is top soil. So in some of my bigger gaps I squashed in the mix, I thought if it dosnt take then can just take it up. But today I noticed it seems to have set. will this be ok. please dont mock. will look forward to your answers.