Title:
Deformations of Concretes Made With Blast-Furnace Slag Cement and Ordinary Portland Cement
Author(s):
Jean-Chuan Chern and Yin-Wen Chan
Publication:
Materials Journal
Volume:
86
Issue:
4
Appears on pages(s):
372-382
Keywords:
blast furnace slag; compressive strength; concretes; creep properties; deformation; humidity; mortars (material); portland cements; shrinkage; slag cements; temperature; thermal expansion; weight (mass); Materials Research
DOI:
10.14359/2151
Date:
7/1/1989
Abstract:
Test results of a comprehensive program to investigate the temperature and humidity environment effects of deformations of concrete and mortar made with blast-furnace slag cement (BFSC) or ordinary portland cement (OPC) are presented. The program was composed of creep, shrinkage, and thermal expansion coefficient tests. Creep tests were performed in the fog room (called basic creep), drying room (drying creep and total deformation), and high-temperature room (high-temperature creep). Shrinkage specimens were exposed to 50 percent relative humidity in the drying room. The influence of loading ages on the creep and exposure ages on the shrinkage of specimens were investigated. Test results indicate that the basic creep is lower for BFSC concrete than OPC concrete, while BFSC concrete has higher total deformation at simultaneous loading and drying conditions than OPC concrete. Shrinkage of both BFSC concrete and mortar is comparably greater than that of OPC. The test results reveal that the magnitude of the coefficient of thermal expansion has an inverse relation with the strength of mixes made with different types of slag cement.