Glass Fiber Reinforced Cement Application for Ceiling Manholes

Cement has always been a staple part of the construction industry since it effectively binds concrete, which is also the most widely used material in building projects both in residential and commercial sectors. However, many builders nowadays prefer to use glass fiber reinforced concrete (GFRC) over precast concrete since the former can be used in various applications, from indoor decorations to exterior renovation projects, as it is highly adaptable and adjustable.

The use of GFRC on a commercial level started in the 1970s, and it has quickly grown to be one of the most predominantly used building materials today. Since GFRC contains glass fibers, it is more durable than traditional cement. Many contractors also prefer GFRC as it is highly versatile and can create decorative pieces such as wall panels, fireplace surrounds, and even vanity tops. 

What is GFRC?

GFRC is a high-performing concrete mixture composed of glass fibers, fine sand, and an acrylic polymer for elasticity. It essentially mimics traditional cement's appearance and texture but is lighter and more flexible. The glass fibers provide strength and malleability, similar to steel reinforcements found in concrete.

Aside from being lightweight and versatile, there are other advantages when using GFRC, such as:

• Lab-tested GFRC is more efficient in resisting moisture build-up. It generally performs better than cement since it does not have steel reinforcement which can be corrosive.

• Fast installation and incredibly lightweight than cement.

• GFRC is also incredibly malleable and easily molded into any shape or form.

• GFRC has thermal properties, making it resistant to burning. It is also more weather-resistant than regular cement.

• Since GFRC is 75% to 90% thinner and lightweight, it lessens transportation and worker expenses. Therefore, it is more cost-efficient.

• Not only is it as durable as cement, but the materials used to manufacture GFRC are ecologically friendlier. It also lasts long, effectively reducing the need for replacement or new installation.

• GFRC is superior in strength in withstanding hurricane-force winds and seismic loads. 

Whether performing an interior renovation project or restoring a building's exterior, GFRC is a material that can significantly ease installation and cost worries during a project. It is a versatile material that remains a go-to product among architects, engineers, contractors, and building owners alike, and for a good reason.

GRFC Applications

 GFRC has complex properties compared to traditional concrete because of its unique structure. As a result, it is ideal for molding despite being highly durable. It also has acoustic properties for applications in theaters, cinemas, and entertainment venues.

Here are the many uses of GFRC :

• MODULAR BUILDINGS - Single- or two-story, constructed with AR glass fiber reinforced cementitious sandwich panels integrated into a lightweight steel structural frame during erection.

• FACADE PANELS - GFRC is incredibly flexible in that it can be manufactured as wall and window units, spandrel, soffit and fascia panels, mansard roof elements as well as mullions, cornices, and column covers.

• DECORATION ELEMENT - GFRC architectural elements are relatively lightweight and require low maintenance. These attributes make GFRC architectural elements sensible for new and refurbished buildings. Thin complex shapes with excellent surface finish and surface details can be easily formed using AR glass fiber reinforced cementitious materials.

• DRAINAGE CHANNELS - GFRC e channels are designed for optimum flow capacity and are available in different cross-sectional sizes with lengths ranging from 2 meters (6.6 feet). Further, these channels are lightweight, easy to install in long sections with reduced excavation, maintenance-free, and require fewer silt traps or utility holes due to their superior hydraulic performance.

• SEWER LININGS - GFRC sections are versatile and cost-effective, offering several significant advantages over FRP in sewer applications. They are stiffer and bond well with the grout lining, essentially becoming part of the sewer structure. Consequently, they are more resistant to the damaging influences of water pressure or ground movement.

• CEMENT FOR CEILING MANHOLES - A ceiling manhole is essentially a means of gaining access to the space between the roof and the ceiling. It is essential when the wirings and insulation in the roof void need to be maintained. Installing a glass fiber reinforced cement access door significantly provides access to the technicians, and what better way to seal the panel aesthetically but with GFRC.

Since GFRC essentially works as cement, it can be treated and manufactured into precast concrete and natural stone. However, it is not as durable as precast and stone in supporting structural loads. 

THE BOTTOMLINE

Due to its versatile nature, GFRC is widely recognized as superior to traditional cement in the construction industry. It is so reliable that the material is also used in architecture and engineering. Designers can transform GFRC into a complex decorative material and even support the creation of pre-fabricated buildings.

It is a vital resource that includes self–cleaning environmentally friendly panels, quickly dyeable surfaces, and high-performance concrete applications. With additional further research in improving its properties, builders will soon prefer GFRC to precast cement.