Standard of Method of Test for Evaluation of Adhesive Anchors in Concrete Under Sustained Loading Conditions
在持续荷载条件下评估混凝土中粘结锚的试验方法标准
粘结锚固系统广泛应用于运输结构中,如桥梁拓宽、混凝土修复和修复、护栏改造、现有结构上的公用设施安装和隧道工程。这些系统用于在混凝土中锚固螺纹杆和钢筋。本试验方法确定了粘合剂锚在正常条件下承受持续拉伸载荷的能力。本试验方法适用于AASHTO应用中使用的结构,并适用于混凝土预钻孔中带有钢锚的粘结锚固系统。
本试验方法确定了在不同持续荷载水平下,混凝土中粘性锚的失效时间。静载荷试验由ASTM E 488发展而来,持续载荷(蠕变)试验由ASTM E 1512和ICC-ES AC308修改而来。本试验方法仅涉及持续荷载对粘性锚的影响。许多其他因素会影响粘合锚的承载能力,一整套测试对于评估粘合锚至关重要。参考ICC-ES AC308,了解适用于粘性锚固件的许多因素和相关测试方法的列表。
Adhesive anchor systems have widespread use in transportation structures such as bridge widening, concrete repair and rehabilitation, barrier retrofitting, utility installation on existing structures, and tunneling. These systems are used to anchor threaded rod and reinforcing bars in concrete. This test method determines an adhesive anchor's ability to withstand sustained tensile loads under normal conditions.This test method applies to structures used in AASHTO applications and is applicable to adhesive anchor systems with steel anchors in predrilled holes in concrete.This test method determines the time to failure for adhesive anchors in concrete at various levels of sustained loading.The static load test is developed from ASTM E 488 and the sustained load (creep) test is modified from ASTM E 1512 and ICC-ES AC308.This test method only addresses the effect of sustained loads on adhesive anchors. Numerous other factors affect the load capacity of adhesive anchors and a complete battery of tests is essential to evaluate an adhesive anchor. Refer to ICC-ES AC308 for a listing of some of the many factors and related test methods that apply to adhesive anchors.