摘要
选用816环氧树脂、复合改性固化剂、助剂、填料和改性天然植物纤维,开发出适用于港工预应力混凝土大管桩梁体分段预制拼装中使用的HLC-LZ建筑结构胶。试验结果表明,HLC-LZ建筑结构胶涂层厚度为4mm时无流挂,25℃适用期为70min,1 d、14 d抗压强度分别为44.4 MPa、91.9 MPa,14 d正拉粘结强度为14.2 MPa,14 d粘结抗拉强度为39.4 MPa,性能符合JTS 167-6—2011《港口工程后张法预应力混凝土大管桩设计与施工规程》中对混凝土大管桩梁干接头粘结剂的性能要求。
Chooses 816 epoxy, composite modified curing agents, additives, packing and modified natural plant fiber to develop the HLC-LZ building structural adhesive, suitable for port engineering large diameter post tensioned prestress concrete cylinder pile in the section prestressed assembly in use. The experimental results showed that：when the thickness of HLC-LZ building structural adhesive coating is more than 4mm, it has no flow hang, the applicable time under 25 ℃ is 70rain, 1 d compressive strength is 44.4 MPa, 14d compressive strength is 91.1 MPa, 14 d of the bonding strength is 14.2 MPa, 14 d of bonding tensile strength is 39.4 MPa, performance of HLC-LZ meets the performance requirements of dry joint adhesive in standard JTS 167-6-2011＂Port engineering technical code of design and construction for large diameter post tensioned prestress concrete cylinder pile＂.
出处
《新型建筑材料》
2014年第6期22-24,63,共4页
New Building Materials
关键词
港工预应力混凝土
大管桩
环氧结构胶
port engineering prestress conerete.larse diameter cylinder pile
epoxy structural adhesive
