Acquisition of Minister Approval for the Individual Project
The task of bringing “SHIRASU” to the manufacturing process and to start using it as a building material was not an easy one. We needed to undergo verification of all aspects of “SHIRASU” concrete. Form different physical properties of “SHIRASU” , such as neutralization examination, test of durability and examination of the different mixtures of proportions of ingredients in order to find the optimum solution.
Along with laboratory tests of material samples we constructed full-scale mock up in order to have real size concrete pouring experiment, durability check and to study material performance throughout the four seasons of the year. From the project team launch in 2012 through nearly two years of development experiments, finally in March 2014, we were able to acquire the “individual ministerial approval» to build one house using “SHIRASU” concrete.