The Effect of Bio-Micro Piles on the Improvement of Sandy Soil

Recently, industrial development and high growth of constructions have increased the need to pay attention to the improvement of construction sites. Meanwhile, soil biological improvement as a new, low cost and environmentally friendly method has been considered by many researchers. On the other hand, the use of micro piles by cement or chemical grout injection as one of the methods of soil improvement has been proposed since almost the middle of the twentieth century. Of course, one of the disadvantages of micro piles is the use of cement or chemical grouts, which have both limited resources and environmental pollution. The use of biological micro piles is one of the new and economical solutions to solve these problems.