Title:
Effect of Calcination Temperature on Polymerized Aluminum Chloride Waste Residue Cement Mortar
Author(s):
Ping Xu, Yuekang Guo, Mankui Zheng, Tianyu Chen, and Xinfeng Ren
Publication:
Materials Journal
Volume:
121
Issue:
6
Appears on pages(s):
77-84
Keywords:
activity index; calcination temperature; compressive strength; micro-morphology; polymerized aluminum chloride (PAC) waste residue; volume stabilit
DOI:
10.14359/51743283
Date:
12/1/2024
Abstract:
This paper determines the effect of calcination temperature on the
activity of polymerized aluminum chloride (PAC) waste residue.
The effect of the calcination temperature of PAC waste residue
on the compressive strength of cement mortar was studied using
the slurry substitution method. The compressive strength data of
cement mortar mixed with different temperatures of calcined PAC
waste residue were analyzed by fitting. A compressive strength
prediction model of PAC waste residue calcination temperature on
the compressive strength of cement mortar can be built. The effect
of PAC waste residue on the volume stability of cement mortar was
also studied. The results showed that calcination increased the
activity index of PAC waste residue by 5 to 10%, and 600°C was
the optimal calcination temperature. Compared with the uncalcined
PAC waste residue cement mortar, the calcined samples
showed complete hydration, smaller micropores, and a denser
overall structure. The fitting curve provided a good fit for the
development of the compressive strength of cement mortar mixed
with different temperatures of calcined PAC waste residue. A
model of the calcination temperature of PAC waste residue on the
compressive strength of cement mortar was derived based on the
fitting curve. The volume stability of cement mortar mixed with
PAC waste residue calcined at 600°C was improved.
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