Study on the Development of Early Strength in Mortar Using Early-Strength Type of PC Superplasticizer

Abstract

In many ways to improve early strength of concrete, there is a way to use early strength type agent. In terms of cost it is the best way to improve early strength. It is well known that PC(polycarboxylate) agent is superior than other agents in early strength of concrete. So this study investigates the development of the strength of mortar in early age using different type of agents. (This is a former study to adequate to concrete.) For the sake of proof this fact, we tested by the different factors. We measured compressive strength in age 12hour, 18hour, 24hour, 3day and gave a request test XRD, MIP, also took a picture of minuteness organization by SEM. According to the results, it is proved that mortar using early strength type PC agent is superior than other agents using water reducing AE agent, high performance type PC agent in strength of early age. Because early strength type PC agent makes more chemical binding in early age of mortar.