Thursday, 15 August 2013

ENGINEERS ONLY! TEST BETTER - BUILD STRONGER!


ENGINEERS ONLY



Introduction of HT-225 Concrete Rebound Test Hammer



Concrete is susceptible to a variety of environmental degrading factors which tend to limit its service life. This therefore has brought about the need for test methods to measure the in-place properties of concrete for quality assurance and for evaluation of existing conditions. Since such test are expected not to impair the function of the structure and allow for re-testing at the same location to evaluate the changes in property at some other point in time, these methods should be non-destructive. Hence the Concrete Test Hammer.

Features of the HT-225 Concrete Rebound Test Hammer

1.            The Concrete Rebound Test Hammer  is used to test the Surface Hardness and Penetration Resistance of concrete.

2.            It works by measuring the rebound of the spring-loaded hammer, when impacting against the surface of the concrete sample.

3.            It is a non-destructive test which can help to estimate the compressive strength of concrete.

4.            It is used to test the compressive strength of building structures, floors, bridges, dams, highway Roads and rocks.

5.            It is an easy-to-use instrument that provides a quick and on-the-spot test for obtaining an immediate indication of concrete strength in various parts of structures.

6.            It is portable and Handy.

7.            It is used in assessing the likely compressive strength of concrete with help of suitable co-relations between rebound index and compressive strength.

8.            It is used in assessing the uniformity of concrete

9.            It is used in assessing the quality of the concrete in relation to standard requirements

10.          It is used in assessing the quality of one element of concrete in relation to another

11.          It is most commonly used due to its simplicity and low cost.

Note:      The Rebound Hammer method can be used with greater confidence for differentiating between the questionable and acceptable parts of a structure or for relative comparison between two different structures.

Specification

1.            Test Range: 10-60 mpa

2.            Impact Energy: 2.207J (0.225 kgf.m)

3.            Impact Stroke: 75 mm

4.            Friction of Slider: 0.5-0.8 N

5.            Spherical radius of impact pole: 25+/-1 mm

6.            Dimension: 278*D54 mm

7.            Weight: 1kg

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