As a new type of advanced pile of retaining and protecting for foundation excavation

the squeezed scallop pile mixed expanding admixture is studied experimentally. The intention of this paper is to survey the compaction efficiency against soil around pile

the mechanism

the retaining height

the inner stress distribution and calculation of squeezed scallop pile mixed expanding admixture as retaining and protecting for foundation excavation. Compared with common reinforced concrete retaining piles

the major characteristics of squeezed scallop pile mixed expanding admixture contain: (1) The maximum bending moment is decreased 20 % ? 30 %; (2) The total displacement in top can be reduced 33.5 % on average; and (3) The ground limit load is increased 13 % under regular service conditions. Against the contraction distortion of common reinforced concrete piles

the squeezed scallop pile mixed expanding admixture as retaining and protecting can strengthen the soil around piles effectively.