高强无机锚固材料的实验研究  

Experimental Research on High-strength Inorganic Anchoring Material

作　　者：彭小芹 刘艳萌[1] 钟安鑫 杨巧[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]贵州中建建筑科研设计院,贵州550006

出　　处：《重庆建筑大学学报》2007年第2期113-115,共3页Journal of Chongqing Jianzhu University

摘　　要：研制一种新型的无机锚固材料,作为植筋胶的替代品。通过试验确定无机锚固材料的配合比,并对其抗压强度、与混凝土的粘结强度、体积稳定性、对钢筋的锚固力进行研究。所研制的无机锚固材料的早期强度高,1 d强度达到38.5 MPa,3 d强度达到60 MPa以上;与混凝土有较高的粘结强度,28 d的粘结强度在2 MPa左右;所研制的锚固材料随着龄期延长,会产生微小的体积膨胀,有利于提高锚固力。所研制的锚固材料是以水泥基材料为主要成分的无机锚固材料,克服了有机高分子材料耐久性差、施工条件要求严格等缺点,试验证明此材料具有早强高强、与混凝土粘结良好、能够产生微小的体积膨胀等特点,能够满足植筋施工和承载力的要求,可以替代植筋胶使用。A new type of inorganic anchoring material is developed as a substitution for anchoring adhesive to overcome some imperfections in the process of planting reinforcing steel bar. The mix proportion of the anchoring material is determined by experiments. The compressive strength, adhesive force to concrete, volume stability and anchoring force with steel bar are studied. The early strength of the anchoring inorganic material is quite high： for 1d up to 38. 5MPa and 3d up to 60MPa. It is a good adhesive to concrete and the adhesive strength of 28d is about 2MPa. The anchoring material will have tiny volume expansion with the age, which is beneficial to enhancing the anchoring force. The essential component of the inorganic anchoring material is cement- based material, so some defects of the organic macromolecular material can be avoided, such as poor stability and requirement for vigorous construction conditions. Its characteristics in early strength, adhesive force to concrete and volume expansion can satisfy the requirement of the construction to the planting reinforcing steel bar and the loading force, thus it can be used as a substituting material for anchoring adhesive.

关 键 词：植筋 无机锚固材料 粘结强度 锚固力 

分 类 号：TU502[建筑科学—建筑技术科学]