Paper Title:
The Alkaline Activation of Calcium Oxide on Phosphorous Slag Powder Cementing Material in Autoclaved Curing
  Abstract

This research attempts to test the mechanical properties of calcium oxide-phosphorous slag powder cementing material under autoclave curing condition. X-ray diffraction, scanning electron microscope-energy dispersion scanner and differential scanning calorimetry-thermogravimetry were adopted to characterize the performance of the hydration products and microstructure of phosphorous slag powder cementing material autoclaved product. The research findings showed that under the condition of autoclave curing, doping calcium oxide would activate preferable property of hydration and hardening of phosphorous slag powder cementing material, and the best strength of the cementing material would be achieved with optimal doping of 15% (in mass) compound calcium oxide. With the effect of the alkaline activation of calcium oxide, there mainly remained the calcium silicate hydrate gel and Al-calcium silicate hydrate in hydration products of phosphorous slag powder cementing material. Excess calcium oxide made alkalinity of calcium silicate hydrate gel change from low to high, thus leading to the decline of mechanical performance of autoclave products.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
2317-2322
DOI
10.4028/www.scientific.net/AMR.239-242.2317
Citation
J. X. Cao, L. Yang, Q. Lin, G. S. Bai, F. Liu, "The Alkaline Activation of Calcium Oxide on Phosphorous Slag Powder Cementing Material in Autoclaved Curing", Advanced Materials Research, Vols. 239-242, pp. 2317-2322, 2011
Online since
May 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: Chang Jun Ke, Hao Wang, Tao Ke
Abstract:studied types and amount of hydration products in cement paste in waste concretes and effect of the cement paste in waste concrete for...
949
Authors: Xiao Jun Jiang, Yan Yun, Zhi Hua Hu
Abstract:The feasibility of manufacturing non-autoclaved aerated concrete using alkali activated phosphorus slag as a cementitious material was...
1147
Authors: Yang Lin, Jian Xin Cao, Qian Lin
Chapter 3: Tunnel, Subway and Underground Facilities
Abstract:Influence mechanisum of lime on the strength and water-resistance properties of phosphogypsum autoclaved brick is exploited for the...
1492
Authors: Ming Feng Zhong, Da Gen Su, Yi Xiang Zhao
Chapter 4: Material Engineering and its Application Technology
Abstract:Hydration activity of waste ceramic polishing powder at autocalved condition were studied by IR, XRD, SEM and EDS in civil engineering. The...
392