A geomembrane is a barrier or liner made of a synthetic membrane that lets minimum or hardly any water through. Using it in geotechnical engineering material helps to control the movement of fluids or gasses in a human-made project, structure, or system. Are you curious to know how? Well, you need to check out this blog post on Geomembrane and its waterproofing mechanism. Let’s dive in.
What is HDPE Geomembrane In The Construction Industry?
Made from thin or continuous sheets of polymer, Geomembrane HDPE (High-Density Polyethylene) is an excellent material for lining projects. All thanks to its strength, resilience, and affordability in comparison to other construction materials.
What more? Geomembrane waterproofing ensures excellent chemical and UV resistance. This makes it a good choice for large-area applications that require high-quality installation. For instance, they are a preferred option in places like the tops of landfills, reservoirs, ponds, and canal liners.
HDPE is also safe for food, which means you can use it to store potable water. Now, let’s learn a few more properties about them in detail.
Understanding the Properties of Geomembrane
There is a plethora of physical and chemical properties of Geomembrane sheets that make them a preferred choice for waterproofing building walls. Let’s have a quick glance at all the good things about them.
1-Physical properties of these Geomembrane sheets
- Thickness (smooth sheet, textured, asperity height)
- Melt flow index
- Mass per unit area (weight)
2- HDPE’s Mechanical Properties
- Tear resistance
- Impact resistance
- Puncture resistance
- interface shear strength
- Anchorage strength
- Stress cracking (constant load and single point).
All in all, these properties of geomembrane make it the best material for waterproofing buildings to increase their life.
What Is The Installation Process Involved In Geomembrane Waterproofing?
The installation process of the Geomembrane liner is extremely technical. To begin with, it needs welding equipment and a skilled welder for installing them properly on-site. However, there are a few steps they usually follow while installing geomembranes. Let’s see how:
- Firstly, they strive to meet all the required surface conditions before laying the linings.
- Afterward, they deploy the geomembrane rolls and identify them correctly.
- Moving ahead, they ensure that they correctly installed the anchor system
- In the next step, they verify if the anchor trench and lining placement has been correctly done.
- Lastly, they make sure that they are using the correct welding equipment
Reasons Why Geomembrane Plays An Essential Role In Waterproofing
Did you know? Buildings require deformable waterproofing barriers, can withstand displacements and are durable. Geomembrane waterproofing sheets make it possible. Here is why.
- Acts as an Efficient Barrier by protecting structures from water infiltration, preventing water leakage into slopes
- Resists ground settlement and differential movements between adjacent blocks of the building or structure
- The process of geomembrane installation requires lighter logistics and less construction duration than conventional waterproofing solutions
- Allows the usage of local materials, avoiding treatment and minimizing the fill volume, considerably reducing the environmental impact
- Doesn’t need any routine maintenance as there is no downtime cost involved for repairing the accidental damage underwater
Undeniably, this polyethylene geomembrane stops water from getting in through cracks. Consequently, this lets the PE geomembrane stop a building from falling, saving lives.
Wrapping it up
Indeed, Construction work is safe with products like geomembranes. However, it can take effort to figure out which type of geomembrane is best for your project. Several things come into play, such as cost, availability, and how well it works.
HDPE geomembrane is the best type because it works better than the others. It meets the requirements for environmental sustainability, is cheaper than other types of geomembrane, and can be used for many different things.
It’s a cost-effective way to stop seepage and leaks in reservoirs, dams, and buildings. You can do it by reaching the best manufacturers and suppliers of geomembrane sheets worldwide.
Ques 1) How Do Geotextiles And Geomembranes Differ From Each Other?
Geotextiles, as their name speaks louder, are composed of nonwoven fabrics and are usually perfect for the consolidated subsoil. On the other hand, Geomembrane, an excellent construction material made of high-density polyethylene, plays an essential role in the seepage-proofing application.
Ques 2) Which methods should I use to test Geomembrane HDPE sheets?
Due to their long history in this field, most of the generic geomembrane test methods used worldwide come from the American Society for Testing and Materials (ASTM). The International Organization for Standardization has recently developed ways to test things (ISO).
Lastly, the Geosynthetic Research Institute (GRI) has made test methods for tests that neither ASTM nor ISO cover. Of course, each country and manufacturer usually has its own (and sometimes secret) way of testing.
Ques 3) Is HDPE long-lasting?
You can always stay assured about the durability of these HDPE waterproofing sheets.
Ques 4) How much does an HDPE Geomembrane cost?
The price of the HDPE waterproofing sheet completely depends on certain factors, such as the thickness, quantity, brand, etc. Make sure you are seeking advice from experts before purchasing this construction material.
Ques 5) Are geomembrane placement processes in new and renovation projects similar?
Not at all, there is a fundamental difference between new building projects and renovation projects. For new buildings, geomembranes must be put on top of a gravel layer with a specific thickness, depending on the soil conditions. This thick plastic sheet ensures that water from below doesn’t get into the gravel and that the base doesn’t get wet later.