无粘结预应力结构封堵砂浆的研制与应用无粘结预应力施加于混凝土结构的全部预应力均由两端锚具承担。因此，如何保护预应力锚具外露部分不锈蚀，保证其设计的耐久性能，就是无粘结预应力结构的关键技术之一。Ｂ前，一般多用水泥砂浆封堵，将预应力锚具外霎部分包裹在水泥... Development and application of non-cohesive prestressed structure sealing mortar All prestressing forces applied to concrete structures by non-cohesive prestress are borne by both anchorages. Therefore, how to protect the exposed part of the prestressed anchorage from rust and ensure the durability of its design is one of the key technologies of the unbonded prestressed structure. Before B, generally use cement mortar to plug, and wrap the outer part of prestressed anchorage in cement...