Experimental Study of Activation the Reactivity of Waste Mortar

Abstract:

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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 et al., "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:

$35.00

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