Title:
Effects of water/cement ratio on early age hydration phases composition and strength development of concrete in thermal environment
Author(s):
Fengchen Zhang, Lingling Ai and Dejian Shen
Publication:
China Concrete and Cement Products
Volume:
Issue:
No.5 2010(Total 175)
Appears on pages(s):
7-10
Keywords:
Thermal environment, Water to cement ratio, Early age, Strength development, Hydration phases composition
DOI:
Date:
10/20/2010
Abstract:
Cement hydration at early age is in a certain temperature field because of hydration heat of mass concrete as well as ce-ment productions curing with high temperature.Therefore phases composition and strength development in thermal environment are com-monly different from those in normal curing conditions.Phases composition and strength development at early age of concrete with differ-ent water to cement ratio(w/c) cured in different thermal environment are studied,and the brittleness is evaluated by means of tensile-splitting strength to compressive strength ratio.Experimental results show that compressive strength of concrete with different w/c are im-proved with the increase of curing temperature.Tensile-splitting strength increases most at 50℃ and decreases when the curing tempera-ture continued to increase.Moreover,tensile-splitting strength of concrete with lower w/c decreases obviously.In lower temperature envi-ronment,the w/c has little effects on phases composition,while in higher temperature environment,phases composition varies with the w/ c.
To order a copy of this publication EMail CCPA at Qinghuan Zhang
China Concrete and Cement Products, International Partner Access
View Resource »