TY - JOUR
T1 - A new accelerated method for determining the potential alkali-carbonate reactivity
AU - Xu, Zhongzi
AU - Lan, Xianghui
AU - Deng, Min
AU - Tang, Mingshu
PY - 2002/6
Y1 - 2002/6
N2 - Many kinds of carbonate aggregates with different chemical compositions, structure, and geological characteristics have systematically been investigated. This research deals with chemical components and mineral analysis, petrographic examination of the aggregates, the dynamics of alkali-carbonate reaction with different cements, alkali contents, and particle sizes. A new method for evaluating the potential alkali-carbonate reactivity has been proposed according to the results, in which the major test factors include 1.5% Na2Oeq. of alkali content, 1 M NaOH solution, 0.3 water-to-cement ratio, 5-10 mm particle size, and 4 weeks of test period at 80 °C. The results using this new method has also been compared with that of the performance of concrete structures in China.
AB - Many kinds of carbonate aggregates with different chemical compositions, structure, and geological characteristics have systematically been investigated. This research deals with chemical components and mineral analysis, petrographic examination of the aggregates, the dynamics of alkali-carbonate reaction with different cements, alkali contents, and particle sizes. A new method for evaluating the potential alkali-carbonate reactivity has been proposed according to the results, in which the major test factors include 1.5% Na2Oeq. of alkali content, 1 M NaOH solution, 0.3 water-to-cement ratio, 5-10 mm particle size, and 4 weeks of test period at 80 °C. The results using this new method has also been compared with that of the performance of concrete structures in China.
KW - Accelerated method
KW - Alkali-carbonate reaction
KW - Durability of concrete
KW - Reactive aggregates
UR - http://www.scopus.com/inward/record.url?scp=0036603722&partnerID=8YFLogxK
U2 - 10.1016/S0008-8846(01)00758-X
DO - 10.1016/S0008-8846(01)00758-X
M3 - 文章
AN - SCOPUS:0036603722
SN - 0008-8846
VL - 32
SP - 851
EP - 857
JO - Cement and Concrete Research
JF - Cement and Concrete Research
IS - 6
ER -