Case story

Polyfelt® PEC Reinforced Soil Wall with Gabion Surface

Philippines, South Luzon

Project Data

Project	Reinforced Soil Wall with Gabion Surface
Location	South Luzon, Philippines
Client	Filinvest Land Incorporated
Products used	Polyfelt® PEC

Overview

This lakeside resort project is nature oriented with emphasis to use enviromental friendly material.

Applications

Construction of a 9 m high vertical wall was carried out locally available stone filled gabion facing and reinforced with Polyfelt® PEC 50, 75 and 100.

Polyfelt® TS 50 non-woven geotextile was used to wrap around the aggregate as cut off drain and also prevent soil piping through the stone.

Polyfelt® PEC high strength geotextile is a composite geotextile consisting of high tenacity polyester yarns and continuous filament non-woven geotextile. The high tenacity yarns provide the tensile strength required for reinforcement while the non-woven geotextile facilitates in-plane drainage and optimum reinforcement / soil friction interface.

Due to the unavailability of granular soil backfill on-site the use of stone gabion, residual soil and Polyfelt® PEC reinforcement is the most cost effective option when compared with other alternative solution.

Installation

Prior to installation a well compacted platform was prepared using 10 ton roller. Gabion basket was position in their geometric alignment prior filling of stones; Polyfelt® TS 50 was wrapped behind the gabion basket for filter function.

Polyfelt® PEC high strength geotextile was then laid with reinforcing yarns facing the ground. Pre-tensioning of Polyfelt® PEC high strength geotextile was done by pacing across a 200 mm x 300 mm wide anchor trench and backfill with soil.

Compaction was done at every 300 mm thickness of soil and Field Density Test (FDT) was carried out on random basis to ensure 90% proctor compaction was achieved. The vertical spacing of each layer of Polyfelt® PEC high strength geotextile was 1.0 m.

The project was successfully completed on time, within budget and their concept.