Glassfiber Reinforced Concrete

Glassfiber Reinforced Concrete (GRC) was introduced by GEL in 1979 on license from Pilkinton Brothers Ltd. of England. Since then GRC has been one of GEL's most successful products, adorning many of Bangkok's most recognized building including the Wall Street Tower, Peninsular Plaza, Amarin Plaza and the New Grand Hyatt Erawan Hotel. GRC is a unique mixture of cement and sand reinforced with a special glassfiber, creating a thin but strong material which may be easily formed into a wide variety of ornamental shapes. The light weight GRC are easily transported and put in place.

It is the concrete consisting of to serve the pushing force and fiber glass to serve the pulling force. Compared to the properties of other materials, the fiber glass has the advantages in the toughness. The fiber is long and small resulting in the thinner works of 5 millimeters such as tiles, reinforced paper. In case of comparing to the reinforced concrete which requires the concrete in covering the reinforced iron for not less than 2.5 cm, the reinforced concrete cannot be considered as the light materials compared to GRC designed to serve the equal force.

GRC Production Method

GRC will be produced with 2 main procedures which are:

  1. Spraying: this will be done by spraying the cement, sand, and fiber glass in the liquid condition onto the Mould. Wait until GRC is in the condition which is so dry and strong that can serve the force without deforming when taking the works out of the Mould. After that, cure until the strength is maximized.
    This procedure is for producing the large works, for example, ready-made wall, sun-protecting sheets, roof sheets, parts of ready-made building.
  2. Premixing: this is the mixture of cement, sand, and fiber glass with water in the required proportion before pouring into the mould.
    This procedure is suitable for small works, for example, drains, gutters, sewage ponds, plant pots, and decorative works.
GRC is one of the most versatile building materials available to architects and engineers.

Glassfiber Reinforced Concrete

GRC presents architects and engineers with a material from which the most ambitious designs or to replicate traditional historic features. It can be painted, faced with fine aggregates, coloured or simply left with a natural white or gray, smooth or textured finish.

  • GRC products are lightweight, easy to handle and fast to erect
  • GRC excellent for reproduction and renovation
  • GRC products reduce loadings on buildings leading to significant savings in superstructure and foundations.
  • GRC environmentally friendly
  • GRC provides the designer with a complete technology that few other materials can match for versatility