The durability of fiberglass composite sheet piles in water was studied through the specimens cut from flanges and webs of pultruded sheet pile sections. The experiments were performed to evaluate the water absorption at ambient temperature in complete immersion, and its effect on the tensile properties and the freeze-thaw resistance of the saturated composites. The high temperature at 70°C70°C was used to accelerate the tests, and 100°C100°C (boiling water) to verify the state of saturation. The non-Fickian absorption behavior of the pultruded composites was modeled based on the Berens and Hopfenberg two-phase absorption theory to predict the long-term performance and the change in mechanical properties of saturated composites. The results indicated that the water absorption process of the pultruded sheet pile composites followed a combination of Fickian diffusion and polymeric relaxation. The percent absorption at saturation was about 1.72% for the flange and 3.11% for the web. The water absorption model predicted that saturation would be reached after 5.8 years for the flange and after 14.5 years for the web immersed in tap water at ambient temperature. The tensile strength was found to decrease initially with the increase in the percent water absorption, and finally stabilize at the state of saturation. On the other hand, there was no noticeable change in the tensile modulus of elasticity during the entire water-aging period. The saturated composites showed excellent resistance to freeze-thaw cycling from 4.44.4 to −17.8°C.
(This article comes from American Society of Civil Engineers editor released)
Composite sheet piling, a fiberglass reinforced plastic (FRP) sheet pile, have become an essential addition to the building of retaining walls and seawalls. The FRP retaining walls and seawalls are used under the harshest conditions such as extreme long lengths, high top load, specific or contaminated soils. Composite sheet piles are durable and increasingly being used instead of the traditional steel – and concrete sheet pile. The versality of this product provides civil and maritime industry a sustainable and environmentally friendly product in the construction of bridges, tunnels, embankments and for the protection of river – and canal banks and coasts.
(This article comes from JLD INTERNATIONAL edit released)
Our construction and optimum design guarantees high durability and makes possible diverse, very universal application.
Composite vinyl sheet piles can be used as aesthetic and solid sea walls, bulkheads, they secure river banks as well as are a great solution for road construction and in many other situations.
Amongst the advantages of the system the complexity of solutions and the durability of all of the elements are one of the most important. We are also proud of aesthetic look, light weight, incombustibility, as well as safety of our sea walls or bulkheads. Moreover, thanks to high resistance to rust or scratches, our system is superior to traditional solutions made e.g. out of steel.
The combination of modern material, well-thought design and high quality production process results in manufacturing piling which meets even the highest expectations.
Benefits of vinyl and composite piles
There are several reasons to choose vinyl, composite sheet pile. Amongst the most important, the following should be mentioned:
- low costs – in comparison with traditional solutions, both the initial as well as long-term costs (of e.g. repairs, replacement of damaged elements etc.) are much smaller,
- resistance – not only with respect to their durability, but also when it comes to UV resistance,
- simple installation – quick and easy, with the use of simple machinery, allows to limit the time of work as well as the initial costs,
- high aesthetics – their appearance does not change over time, the color remains the same, thus all of the sea wall, bulkheads etc. remain very aesthetic throughout the years.
The main difference, resulting in diverse application of vinyl sheet piling and its composite alternative, is the maximum height of protective construction created with their use. Since the latter can be installed to create much higher bulkheads, sea walls and other, similar constructions than the former one, it is much more often applied near coast line. Apart from that, with both solutions you get all of the benefits described above.
(This article comes from MINBUD editor released)
We can provide advice on the different methods of installing Synthetic sheet piling. Short lengths can be inserted into the ground by hand with a mallet and Pile Cap, since it is very light. Longer lengths, or insertion into difficult ground conditions, will require more complicated installations.
Driving: This is the most widely used method of installing synthetic sheet piles. With pre-installed templates and vibratory hammers, synthetic sheet piles are mechanically pressed into the ground. Light machines with small impact energy are preferred to avoid any damages to the PVC sheet pile. What types of machines used depends on type of soils, the PVC sheet pile durability and driving depth required. A special guide bar called mandrel shall be used in hard and dense grounds. Several mandrels can be used same time to guarantee a smooth installation.
Jetting: In some cases, the grounds might be too tough and there might be obstacles in the soils, Vibratory hammers cannot drive the composite sheet pile into required depth. Jetting can loosen or remove soils and obstacles. Air ejector or special water might be used
Digging: In stony ground, you cannot drive the composite sheet piling, nor the jetting can be used. Contractors need to dig first. Then the plastic piling is installed in a ditch, which will be filled on both sides. Chemical or Mechanical hardening of the ground shall be applied. When using digging, the installation depth is normally small. If long sheet pile wall need to installation, steel sheet piling is definitely better than uPVC sheet pile.