| 摘要 |
PURPOSE:To make it possible to perform the testing of collected soil on the spot, by a method wherein a mold is filled with collected soil to fabricate an almost conical shape object to be tested which is, in turn, demolded on a flat surface and, after the state thereof or the hardness degree of demolding and the state after demolding are evaluated, an insert tool having an almost conical shape leading end is inserted into the apex of the object to be tested to evaluate the destruction state thereof. CONSTITUTION:An first, a container shaped mold 1 wherein inner and outer shapes are together formed into conical shapes and the apieces thereof are cut off to form an air hole 5 is used and filled with collected soil to fabricate an object 2 to be tested and, subsequently, the formed object 2 to be tested is demolded on a flat plate 3 while the hardness of demolding or self-support property and a surface moisture state are observed to impart evaluation points to respective items. In this case, the detachment of the object 2 to be tested from the mold 1 becomes easy by the presence of the above mentioned air hole 5. Thereafter, a conical shape insert tool is then used to be slowly inserted into the apex of the object 2 to be tested from the leading end thereof and the destruction state of the object 2 to be tested such as crack generation or a collapsing state is observed to evaluate the same. By this method, collected soil is tested on the spot to enable the simple determination of the addition amount of a solidifying material in relatively good accuracy. |
