2018 Volume 72 Issue 1 Pages 204-210
Research on concrete using a C-S-H hardening accelerator, which is an effective material for accelerating the conversion of a framework, is underway. Forces on the progress of compressive strength, the strength development at the high water cement ratio were not so effective, however the durability performance was improved. Therefore, two experiment were investigated （1） examination of the method of adding the C-S-H hardening accelerator and （2） the cavity position contributed by the C-S-H hardening accelerator were experimentally investigated. As a result, the addition of C-S-H nanoparticles as the seed nuclei makes a precipitation site compared with the conventional addition to cement amount. The addition is effective for unit water amount, the effect is recognized in the transition zone region with low addition, It was found that the mortar part was modified by high addition.
