Paper Title:
A.C Impedance Spectrum and Microstructure of Reactive Powder Cementitious Materials with Low w/b
  Abstract

In order to understand microstructure characteristics and properties of reactive powder cementitious materials with low w/b, the A.C impedance test on reactive powder cementitious materials is carried out. The correlation between the impedance parameters, microstructure and properties of reactive powder cementitious materials is also analyzed. Results indicate that the impedance-frequency curve both for reactive powder mortar and ordinary cement mortar consists of vertical part in range of low frequency section and horizontal part within high frequency section. But the angle between vertical part and horizontal part of curve for reactive powder mortar is larger compared with ordinary specimen. There is a good linear relationship between the real part of impedance and angular frequency ω-1/2 for mortar when frequency is from 10Hz to 100Hz. And the slope φ of line increases with the additions of reactive powder and the lowering w/b. The mechanical strength and microstructure of reactive powder cementitious materials with low w/b can be expressed well by the A.C impedance characteristic parameters.

  Info
Periodical
Edited by
Hui Wu, Xiao-Qian Qian, Chong-zhi Li and Fei Li
Pages
72-78
DOI
10.4028/www.scientific.net/KEM.477.72
Citation
G. C. Long, K. L. Ma, Y. J. Xie, "A.C Impedance Spectrum and Microstructure of Reactive Powder Cementitious Materials with Low w/b", Key Engineering Materials, Vol. 477, pp. 72-78, 2011
Online since
April 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yu Qiang Lin, Yan Shi, Jia Zheng Li, Hua Quan Yang
Abstract:Paper studies on phosphorus slag powder(PSP) processed from phosphorus slag with different open-air storage time, analyses the changes in the...
1677
Authors: Peng Liu, Zhi Wu Yu, Ling Kun Chen, Zhu Ding
Abstract:The influence of curing time on the mechanical property of the phosphoaluminate cement (PAC) was investigated, and the mechanism was...
1754
Authors: Dong Li, Fu Dan Chen, Cheng Cheng Che, Ling Peng Kong
Chapter 11: Disaster Prevention and Mitigation
Abstract:Based on desulfurization gypsum, blast furnace slag and steel slag (DGBFSSS), a new clink-free cementitious material with the meaning of...
2955
Authors: Chao Ming Pang, K.Y. Leung Christopher, Wei Sun
Chapter 2: Advanced Building Materials
Abstract:Non-biodegradable rubber waste from tyres can be employed for the making of pseudo-ductile cementitious composites (PDCC) which requires a...
1326