Development history - MIGHTY 21V-SG

By increasing the fluidity of concrete, it is possible to reduce the intensity and frequency of vibration and reduce noise during work. On the other hand, if the fluidity is too high, the materials that make up the concrete will separate, reducing durability of the concrete after curing, which in turn will cause the quality to deteriorate. It was based on these concepts that we started to analyze how concrete acted from the viewpoint of rheology. We started work on the development of a water reducing agent that maximizes the flow properties of concrete while preventing material segregation by pursuing maximum fluidity with vibration under same slump. By incorporating such rheology control technology and a design suited to actual worksite conditions, we were able to develop a high-range water-reducing admixture that flowed smoothly to fill every corner of the mold and also keep static stability with no material segregation. The result was our MIGHTY 21V-SG.

Customers who have used MIGHTY 21V-SG have been very happy with the results and the improvement in productivity, reporting that vibration levels have been reduced by half, reducing noise on the worksite. They have also reported a drastic improvement in work efficiency because the poured concrete will fill the mold using a rod vibrator in place of a large external mold vibrator. The ideal, however, is to "completely eliminate construction site noise." We hope to contribute to the realization of "zero noise at construction sites" through further technological development.