Road Performance And Mix Design Method Of Lean Concrete With Non-vibration Molding

Lean concrete is one kinds of better base course material after that of cement-stabilized crushed stones or lime fly-ash stabilized crushed stone which come forth after the Lean concrete. It has higher supporting capacity,better Anti-erosion property and durability , so it has a good developing foreground.For better constructing and widely using, the molding methods of lean concrete are discussed in this paper, and a new indoor molding method- Non-vibration molding is put forward, and many performance of the lean concrete are further researched. Then, constructing about lean concrete base want putting forward by this study.The mechanical properties of strength and stress-strain of lean concrete are researched, and the strength development with time, relationships between different strength and modulus and strength etc. are drawn. Simultaneity, the properties of dry shrinkage, anti-erosion and frost resistance are proved to be fine by tests and mechanism analysis. It is also proved that lean concrete has better fatigue feature than semi-rigid materials, and two fatigue equations are put forward for this concrete.By analysis, workability of lean concrete with non-vibration molding can be estimated with vebe consistometer. Some standards about mix design of lean concrete are put forward, and then mix design method of lean concrete with non-vibration molding is researched which bases on this standards.