These technological breakthroughs have been made possible essentially through to the use of superplasticizers (high-range water reducers), which are powerful organic polymers that can be used to very efficiently disperse cement particles and silica fume, an ultrafine from of reactive silica. When cement particles are efficiently dispersed, it is possible to lower the water/cement or water/binder ratio below 0.40 and increase significantly compressive strength. In fact the water/cement or water /binder ratio controls concrete porosity, and therefore, concrete strength as well.