PROBLEM TO BE SOLVED: To provide a soil grain stabilized soil, which is less likely to be subject to overgrowth of weed and erosion by rain water and flowing water, on pavement of natural soil having water retention and penetration function.SOLUTION: In a soil grain stabilized soil, soil grain structure is stabilized by mixing short fibers in a soil for pavement construction. The short fiber is a fibrous material produced by forcibly fermenting a cortical layer of a tree selected from hiba cedar, sawara cypress, Japanese cedar and Japanese cypress and then crushing. The crushed fibrous material is integrally mixed with the soil containing silt, clay and sand.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】保水・浸透機能がある自然土による舗装おける、雑草の繁茂や雨水や流水による土壌の浸食が少ない土粒子安定土壌を提供する。【解決手段】短繊維を、舗装工事における土壌に混合して、土粒子構造を安定させる土粒子安定土壌において、前記短繊維は、ヒバ、サワラ、スギ及びヒノキの樹種から選ばれる皮層を強制発酵処理し、その後に破砕してなる繊維状物質であり、前記破砕した繊維状物質を、シルト、粘土、砂を含んだ土壌に混合して一体化する。【選択図】図2
