Road Construction Above Wetlands With Geotextile Reinforcement

The use of reinforcement construction on wetlands was first reported by using stainless mseh under construction embankment in tidal areas in France. Comparison between the pile on top of peat soil in Africa with and without reinforcement reported. Stated that in addition to woven polypropylene fabric, geotextile tensile stress of all types that were sampled from a year earlier installation is reduced between 25 % to 36 % of the initial tensile stress, although it does not have much effect on its function.

The construction of roads over wetlands with geotextile reinforcement to avoid a collapse of the local on soft ground due to low soil bearing capacity. Advantages of geotextile installation on the implementation of the road above the ground is soft in execution speed and relatively cheaper cost compared with the conventional method of hoarding

Planning Method With Limit Equilibrium Analysis
Stockpiles of the road on soft soil will experience a large decline and possible collapse due to lack of load bearing capacity of the pile. One way to improve these conditions is by the use of geotextile is laid out on soft ground before the embankment that serves as reinforcement (reinforcement). Reinforcement in this case is only temporary until a strong bearing (bearing capacity) increased to soft ground enough to support the load on it.

Analysis by the method of limit equilibrium stability will review three modes of construction of embankment on soft soil, namely, internal stability, the stability of soft soil foundation and the stability of the entire construction (overall stability). For planning purposes, the soft soil shear strength profile needs to be modeled. Two models are used to idealize the soil shear strength beneath the pile is soft on soft soil layers thick and thin.

In a thick layer of soft soil, soft soil shear strength increases as a function idealized depths, whereas the thin layer of soft soil, soft soil shear kuatv considered fixed. Balance limit on internal stability suggests that to avoid damage to the embankment construction, geotextile tensile strength must be greater than the lateral force generated by pile on soft soil. Balance approach limits on foundation stability as presented in the foundation collapse mode on a thick layer of soft soil is due to the rotation (rotational sliding).

In the form of rotational and translational collapse in a thick layer of soft soil, the balance of moments to obtain the tensile strength geotextile needs to be delivered. Selection of geotextile for reinforcement is influenced by two factors: internal and external factors.

Internal factors consist of geotextile

• Tensile strength geotextile
• Properties extension (creep)
• structure geotextile
• And resistance to environmental factors

Geotextile external factors consist of pile material types that interact with geotextile. Geotextile structures, namely the type of wicker (woven) or niranyam (non - woven) also influence on the selection of geotextile for reinforcement. Environmental conditions also provide a reduction in the tensile strength of the geotextile due to a chemical reaction between the geotextile and the surrounding environment. Ultraviolet rays, sea water, acid or alkaline conditions as well as microorganisms like bacteria can reduce the strength of geotextile. Also affect the loading time because there will be degradation by fatigue factors and aging. To cover the shortfall, not all available geotextile tensile strength can be utilized in the planning of road construction reinforcement.