A New Method for Aggregate Proportion Design of Mixture

Abstract:

When we make design of mixture ratio, we always use normal equation method (NEM), but the solution value of that method may doesn’t meet our demand. When we use the new method that proposed in this paper, we can solve the problem. The new method makes an improvement for NEM. By iterative algorithm, the new method uses the gradation data calculated by NEM as initial target value, canceling the relevant aggregate if the result of proportion is negative, and setting the gradation to the boundary value if the target value goes beyond limits. According to the adjusted object value, using NEM again, the new aggregate proportion can be solved. Then the new gradation of mixture will come into being the next target value. Finally, the accurate result will meet our need. The new improved method has good engineering applicability and high accuracy

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 1250-1253
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.1250
• Online since: May 2012
• Authors: Yu Hua Li, Kai Huang, Ying Zhen Gao
• Keywords: Iterative Algorithm, Mixture Ratio, Normal Equation Method, Proportion Design

References

[1] Yan J C. Road Constructional Materials [M]. Beijing: China Communications Press, 2004. 31-41.

[2] Li L H, Zhang N L.: Road Constructional Materials [M]. Beijing: China Communications Press, 2004. 28-36.

[3] Xu S K. Analysis on Materials of Asphalt Pavement and Composition Design of Mixture [J]. Journal of China & Foreign Highway, 2002, 22(5):26-29.

[4] Liu F, Shao F. Study on Composition Design of Asphalt Mixture Proportion of High-grade Highway Surface Course[J]. Journal of Shandong University of Technology, 2003,17(5):86-89.