材料科学
纤维增强塑料
胶粘剂
嵌入
复合材料
环氧树脂
巴(单位)
水泥
玻璃纤维
极限抗拉强度
环氧胶粘剂
图层(电子)
物理
气象学
作者
Ehab A. Ahmed,Ehab El-Salakawy,Brahim Benmokrane
出处
期刊:Journal of Composites for Construction
[American Society of Civil Engineers]
日期:2008-12-01
卷期号:12 (6): 596-607
被引量:20
标识
DOI:10.1061/(asce)1090-0268(2008)12:6(596)
摘要
This paper presents the results of an experimental study conducted on the pullout capacity of glass fiber reinforced polymer (GFRP) postinstalled adhesive anchors embedded in concrete. A total of 90 adhesive anchors were installed using sand-coated GFRP reinforcing bars and tested under monotonic tension loading in accordance with ASTM E-488-96 in 1996. The test parameters were: (1) the GFRP bar diameter (25.4, 15.9, and 6.4mm); (2) the embedment depth (5, 10, and 15 db where db=bar diameter); (3) the adhesive type (epoxy-based and cement-based adhesives); and (4) installation conditions (wet or partially submerged and dry holes). The tested GFRP adhesive anchors were installed in concrete slabs measuring 3,750mm long, 1,750mm wide, and 400mm deep. The test specimens were kept outdoors for 7months to be subjected to real environmental conditions including freeze-thaw cycles, wet and dry cycles, and temperature variations. The experimental results indicated the adequate performance of GFRP adhesive anchors installed in wet or partially submerged condition using epoxy-based adhesive. Similar behavior was observed for those installed with cement-based adhesive in dry conditions as well. The capacity of the GFRP bars installed with both adhesive types was achieved at an embedment depth ranging from 10 to 15 db.
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