Abstract: “This study deals with the effect of addition of nano-Colin on some properties of the soil compared Properties obtained from tests carried out on samples. characteristics were obtained from tests conducted on normal sandy soil samples with those obtained from tests performed on the same samples after the addition of nano Colin them. Was a standard proctor test record on the sandy soil used samples (replacement) and we got the laboratory maximum dry density value, After that we have implemented a sand cone method for in situ density and compaction of which we got a coefficient before the addition of nano-Cullen and show us that compaction factor ratios ranging from 95.3 to 96.8% of the value of the laboratory maximum dry density. After mixing the material nano Colin sandy soil in a certain way and at rates ranging from 3- 4 g / m3 of sand were carried sand Cone method experience of on them for compaction factor become clear to us increase the value of density in situ at a rate ranging fr”

Keywords: Nano technology, Synthesis, Nano kaolin, Soil, compaction factor , sand bottle.