Observations Depicting Autogenous Healing and Destructive Cracking in Polymer Modified Calcium Sulfoaluminate Cement Systems
The purpose of this work is to present potential mechanisms for au togenous healing and destructive cracking in polymer modified calcium sulfoalu minate (CSA) cement materials, both of which are theorized to be related to secondary ettringite formation.This work comprises a collection of information from various studies on polymer modified CSA cement systems to form potential explanations for interesting observations.This work utilizes two CSA ce ments——a CSA cement containing tri-calcium aluminate (C3 A) and a CSA ce ment containing belite (C2 S).Polymeric materials incorporated into sample for mulations include hydroxyethyl methyl cellulose (HEMC), vinyl acetate / eth ylene dispersible polymer powder (VAE DPP) and a hydrophobic latex polymer powder.Scanning electron microscope (SEM) images were utilized as a means for speculation and perhaps identification of potential mechanisms related to healing and cracking.
Calcium sulfoaluminate cement Autogenous Healing Secondary Ettringite Cracking
Joshua V Brien
University of Kentucky,Department of Civil Engineering,Lexington,KY,40506,United States of America
国际会议
武汉
英文
124-153
2013-10-23（万方平台首次上网日期，不代表论文的发表时间）