Design, Build and Preservation : An innovative bamboo treatment for industrial building useGrow your future with bamboo

Dr Jean-Luc Kouyoumji, Dr Eric Heisel, Luis Lopez
Building with bio-sourced material is an emerging industry that can make a high contribution to the reduction of GHG emissions and help to unlock the low-carbon, circular economy. Bamboo is a very interesting bio-sourced material for construction. Since years, bamboo is demonstrating a very nice alternative to mineral materials. By maximising the use of bio-sourced in new built and renovation through optimal hybrid solutions with other materials, the environment can be transformed into a large-scale carbon sink. However, unlocking the potential of bio-sourced as both a sustainable building material and climate solution (the ‘natural-carbon-pump’) requires a stronger focus on the bio-sourced construction chains and the whole innovation ecosystem.
First, we will talk about the building value chain for different products and building systems. Comparison will be made with wood industry using engineered wood products (EWP) for the latest developments of high-rise wooden buildings. Authors will show that building with innovative material such as bamboo and engineered bamboo products (EBP) is only a matter of regulations, engineering capacities and implementation methods.
Second, we will focus on bamboo treatment showing some relevant results coming from the Philippines. We will show case of an innovative bamboo treatment implemented at a country scale in the Philippines that is turning today international, with the Base Bahay Foundation of the Hilti Foundation. The project concerns building with bamboo quality socialized homes. Homes that are comfortable, affordable, disaster resilient, ecologically friendly, and with social impact.
Bamboo is known to be difficult to treat due to its high resistance to impregnation. Soaking – diffusion gives some efficiency for needed bamboo preservation rate, as well as for the intensive productivity rate. Alternative solution to the use of traditional treatment products for bamboo poles treatment was investigated and an innovative methodology was successfully implemented in 5 sites in the Philippines, supplying bamboo for housing projects. We will show how a treatment facility has to be designed for workers safety, for environment safety, for bamboo material efficiency, and for product quality control. The treatment procedure is composed of 15 necessary steps to be followed. BSInnovations is the body responsible of the invention, the installation and the technical validation of the treatment facility.
For building material, companies must guarantee the durability of implemented products. The use of bamboo as a building material must fulfil this requirement. Bamboo is known to be very vulnerable to insects including termites and fungi. Guaranteed durability of bamboo is one of the technical brakes that forbids the use of bamboo as a building material. To overcome that brake BSInnovations team mostly composed of well-known international researchers and experts of the wood industry operated a technology transfer from the wood industry to the bamboo sector.
The aim of the treatment of bamboo poles used in construction is to provide a suitable durability for its uses in the respect of safety and environmental concerns, during the treatment process and when Bamboo is in service. The most popular products like Boric acid and its derivatives are known to be effective against fungi, beetles, and termites, biocides registered as very dangerous for Health in Europe, under replacement by alternatives for their uses. To achieve a that goal for bamboo, the treatment solution must be saturated in boron and warmed up to a temperature above 80 °C.

(To be contd)