Paper Title:
Experimental Study of Activation the Reactivity of Waste Mortar
  Abstract

After the processes of crushing, screening and grinding, abandoned mortar powder can be used as a mineral admixture to replace cement. Physical-activating, alkali-activating and compound-activating have been used to stimulate the activity of abandoned mortar power. To get the mechanical properties and microstructure, compressive strength, flexural strength, XRD, TG-DTA and SEM were used. The results show that: Mechanical grinding and activator can greatly improve the activity of mortar power. Stimulating effect of compound activator was better than signal activator and it could promote further hydration of cement. The mortar which is stimulated by compound activator had higher strength than mortar by single activator. It can be seen from micro-test that the mortar with compound activator had more ettringite and other hydration products, and with compact structure.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
1163-1168
DOI
10.4028/www.scientific.net/AMR.189-193.1163
Citation
X. G. Li, X. F. Song, B. G. Ma, S. W. Jian, "Experimental Study of Activation the Reactivity of Waste Mortar", Advanced Materials Research, Vols. 189-193, pp. 1163-1168, 2011
Online since
February 2011
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Price
$32.00
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