The right sealant protects airport concrete and asphalt
The loading and unloading areas, runways, aprons and washing areas of airports are subject to high traffic, heavy loads and nearly uninterrupted use. Therefore it is paramount that the airport floors are treated accordingly. The floors of these areas are made of concrete and asphalt fields which are divided into sections with joints and trench drains. If not treated properly, the drains and joints make the fields vulnerable to corrosion caused by external factors such as climate, chemicals and abrasion. This is where sealants come into play bringing along impermeability.
Sealants make joints, drains and gaps impermeable to water and chemicals, which, among other benefits, prevents sacking of the ground and pollution of the environment.
Characteristics of sealants for airports
The most important property of an airport floor is impermeability to water, microorganisms and chemicals such as de-icing substance and fuels. Depending on the application area, the beneficial characteristics include: flexibility, resistance and sealing the joint, seam or trench drain making it impermeable.
Note that you will need a special product if you wish to seal a gap or joint between two different materials such as asphalt and concrete. Contact us for more infromation and product suggestions!
What to pay attention to when choosing a sealant
- Resistance: when choosing a sealant, it is necessary to consider the environment in terms of possible chemicals and microorganisms that may affect the area: make sure the sealant is resistant to anything that could affect it in the specific environment, and make the floor impermeable to these.
- Application and curing time: the less time the application and curing take, the sooner the area can be opened for use. In most cases minimum downtime is desired.
- Durability: the longer the sealant lasts without maintenance, the more beneficial it is financially.
- Flexibility: as the sealants are applied to joints and trench drains, flexibility is of high importance. the sealant is not to break when concrete fields experience movement as a result of temperature fluctuation or any other reason.
Types of sealants used to make airport floors impermeable
When it comes to sealants, possibilities are many. Below you can find some types of sealants and their properties that are beneficial for new floors as well as asphalt and concrete repairs and renovation.
- Polysulfide: among other benefits, polysulfides are known for their extreme chemical resistance and impermeability. The polysulfide based sealants can be modified to fit a purpose perfectly.
- MS Polymer: modified silane polymer sealants are used for joints in areas that require extreme abrasion and heavy mechanical stress resistance as well as needing to be repellent to water and microorganisms.
- Epoxy polysulfide: epoxies are hardwearing and used for concrete repairs and mechanical stress resilience. These industrial sealants usually consist of two components.
These sealant systems exist as combinations of different products including primers, sealers, crack fillers and tacky sealants. Some of these products are self leveling making the application even easier and less time consuming. Such sealants have been applied for example at the Schiphol Airport in Amsterdam, to guarantee the durability of of the concrete and asphalt floors.
Find a sealant for your project
In case you are looking for a suitable sealant to repair or improve the durability of a new or existing airport or area alike, do not hesitate to contact us. We will make sure your enquiry ends up with our specialists who can provide you with tailored information resulting in a suitable solution for your situation.