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Grey relation analysis of optimal mixing of cement-fly-ash based on road performances(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年04期
Page:
8-12
Research Field:
Publishing date:
2010-08-20

Info

Title:
Grey relation analysis of optimal mixing of cement-fly-ash based on road performances
Author(s):
LEI Yu-zi1; 2;  LI Wei1;  ZHENG Nan-xiang1
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. CCCC First Highway Consultants Co Ltd, Xi'an 710075, Shaanxi, China
Keywords:
road engineering;  cement-fly-ash;  mixing proportion;  road performance;  grey relation
PACS:
U414.1
DOI:
-
Abstract:
In order to design the optimal mixture of cement-fly-ash, this paper adopted the design grading of aggregates, determined the best proportion of cement-fly-ash and admixtures and used the volume design method to get the cement-fly-ash stabilized mixture design. The regularity of the strength, rigidity, anti-contraction and anti-erosion performances of cement-fly-ash stabilized mixture varying with the ratio of cement and fly-ash was studied, and the optimal mixing of cement-fly-ash was decided with the grey relation analysis based on the synthetic performances. The results show: the mechanical performances of cement-fly-ash stabilized mixture increases, and the anti-contraction and anti-erosion performances decreases as the proportion of cement-fly-ash raising; the synthetic performances increases when the proportion of cement-fly-ash raises, and Na2CO3 can help to improve the synthetic performances, but the lime is not; decreasing the proportion of cement-fly-ash can improve the synthetic performances on the basis of meeting the minimum requirement of performances. 7 tabs, 6 refs.

References:

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Memo

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Last Update: 2010-08-20