| 摘要 |
PROBLEM TO BE SOLVED: To reinforce weak ground to prevent sinking of a heavy machine into the weak ground by spreading a civil engineering sheet on the surface of the weak ground beforehand, to guarantee safety for a living body, to prevent generation of toxic gases such as dioxin, hydrogen chloride and NOeven when the sheet is recovered and incinerated after use, to improve weatherability against sunlight, to keep tensile strength over years since fabric texture is pseudo plain gauze, to use the sheet also as a slope face greening sheet for a banking slope face, to reduce outflow of sand of a sand mat layer while keeping an appropriate water permeable environment, and to excellently perform reclamation work, banking work and the like.SOLUTION: The civil engineering sheet comprises a fabric C woven by crossing many warps T and many wefts Y, polylactic acid fibers are used as a kind of the warp and weft, the pseudo plain gauze is used as the fabric texture, and further, a void ratio which is an area ratio of mesh voids R occupying the unit area of the fabric is 2% to 10%. |
