Destructive and Non-destructive Testing of Concrete Structures

被引：0

作者：

Malek, Jedidi ^{[1
]}

Kaouther, Machta ^{[2
]}

机构：

[1] Higher Inst Technol Studies Sfax, Dept Civil Engn, BP 88, Sfax 3099, Tunisia

[2] Higher Inst Technol Studies Rades, Dept Civil Engn, Rades 2098, Tunisia

来源：

JORDAN JOURNAL OF CIVIL ENGINEERING | 2014年 / 8卷 / 04期

关键词：

Rebound hammer test; Compression test; Pulse velocity test; Destructive test; Non-destructive test; Dynamic modulus of elasticity;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The estimation of mechanical properties of concrete can be carried out by several methods; destructive and non-destructive. In this context, the crushing of the samples is the usual destructive test to determine the concrete strength. The rebound hammer test and the ultrasonic device are used in the field of non-destructive tests to determine respectively the compression strength and the ultrasonic pulse velocity (UPV) in the concrete. In this work, eight concrete compositions were used to prepare cylindrical specimens (16 cm x 32 cm) by varying the water/ cement ratio and the cement dosage. An experimental study was conducted to determine the compressive strength of concrete by destructive (compression) and non-destructive (rebound hammer) tests at different ages (7, 14 and 28 days). In addition, the influence of several factors on the modulus of elasticity determined by pulse velocity test was investigated. These factors mainly included the age of concrete and the water/ cement ratio. The results showed that the difference between the resistance values obtained by destructive and non-destructive methods decreases with increasing age of concrete. The dynamic modulus of elasticity increases with the curing time of the concrete until the age of three months. In addition, a simplified expression has been proposed to estimate the rebound number from the value of the dynamic modulus of elasticity determined by pulse velocity test.

引用

页码：432 / 441

页数：10

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