To allow the perforated block to have higher strength and high performance, laminate alkaline resistance glass fibre, both mat and scrim, with a high percentage of fibre content is used for the edges while casting of the product uses 3.5% of AR fibre. To improve earthquake resistance, fitting allowing an RB to go through every block and secured to the steel U-channels on all sides. This design will assist in holding the blocks in position during vibration and reduce the chances of falling off the structure. The perforated blocks design fitted within a hot-dip galvanized mild steel u-channel frame of 100x50x5mm thick was attached to the surrounding wall, beam and floor with dia. 20mm GMS steel rod.
50mm thick panels were later selected to reduce weight and cost. And to speed up production, a double- panels block of 523×1057 and single panel blocks are produced. Once the design confirmation, silicon moulds are fabricated to make the products.
With the sunshade perforated blocks in front of the glass panel, we added a door to allow for general cleaning and maintenance. One block by four blocks section on one side bonded together with inside steel support and hinged to one side to work as a swing opening. The design blended in very well, and the doors were satisfactory concealed. GRC (Thailand) produce the door unit using the steel frame as the outer mould and cast the four-unit of perforated blocks inside the fame at the same time. With the reinforced steel using dia.6 round bar galvanized with the frame and embedded into the GRC, the product showed no sign of delamination in the mock-up unit or any doors sent by sea, and then 100km by truck to site.
The result of careful installation and coating by the client produced an elegant, upmarket and yet durable and easy to maintain sunscreen to shelter from the hot Mandalay sun.
Be Creative with Concrete.
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