| 摘要 |
PURPOSE:To test collected soil on the spot with high accuracy, by a method wherein a mold of which the outer shape is almost conical is filled with collected soil to fabricate an 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, the leading end of the mold is inserted into the upper end of the object to be tested to evaluate the destruction state of said object to be tested. CONSTITUTION:At first, a container shaped mold 1 of which the outer and inner shapes are together formed into a conical shape is used and the conical recessed part 4 of this mold 1 is 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 4 to observe the hardness degree of demolding or self-support property and a surface moisture state while predetermined evaluation points are imparted to respective items. Thereafter, the above mentioned mold 1 is then used as an insert tool and slowly inserted into the apex of the object 2 to be tested from the leading end thereof to observe the destruction state such as the crack generation or the collapsing way of the object 2 to be tested to evaluate the same. By this means, collected soil is tested on the scene to enable the simple determination of the addition amount of a solidifying material in relatively good accuracy. |
