Concrete has the property of shrinkage as it dries after hardening. That causes cracks and mars the appearance of the structure, and can also result in water leakage. Preventing rusting of steel reinforcement rods caused by cracking and improving durability is an important issue because building a sustainable society requires increasing the lifespan of concrete.
By optimizing the mix proportion of carefully selected component materials, Zero Shrink not only prevents shrinkage when drying to the extent possible, it makes up for the minimal unavoidable shrinkage in advance through the initial expansionary effect of an expansive additive. It is a type of concrete with an ultra-low degree of shrinkage that reduces net shrinkage to zero.
This technology was awarded by the Fuji Sankei Business i. in 2017.
Super Water-repellent Formwork
Super Water-repellent Formwork has biomimetic technology that uses a lotus leaf surface pattern to shed water. This substantially controls surface voids or color irregularities that mar the appearance of the concrete, enabling the creation of beautiful, high-quality concrete. Shimizu developed it jointly with Toyo Aluminum K.K.
This technology was awarded by The Nikkan Kogyo Shimbun, Ltd. (The Daily Industrial News) in 2017.
Water repellency of coated plywood
Water repellency of Super Water-repellent Formwork
Concrete surface formed with coated plywood
Concrete surface formed with Super Water-repellent Formwork