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split tensile strength of concrete ? 

The split tensile strength of concrete is a measure of the concrete's ability to resist forces that tend to split it along it‘s length. This property is important in many applications , same as building columns and foundations . There are many ways to determine split tensile strength of concrete . but the most method is the use of a special device called by a split tensile strength tester . This article will explain how this test is performed & how to interpret the results.

How to determine split tensile strength test of concrete | اختبار مقاومة الشد لانفصال الخرسانة
split tensile strength of concrete 

?What is split tensile strength of concrete and why is it important

 The definition of split tensile strength of concrete

Split tensile strength of concrete is a measure of the ability of concrete to resist fracture when subjected to tensile stress. It is an important property to consider when designing concrete structures subjected to tension, such as beams or columns. The test is simple and only requires a few pieces of equipment. 

Importance of split tensile strength of concrete

split tensile strength of concrete test is important because it provides us valuable information about performance of concrete under tension . This information can be used to design many durable & resilient concrete structures. This test is relatively quick and easy to perform, making it a useful tool for quality control during construction. 

 split tensile strength of concrete

The necessary equipment

for obtaining split tensile strength of concrete . the following equipment is necessary:

  • -a compression test machine capable of applying load of at least 2400 kN.
  • -a steel cylindrical specimen its diameter of 150 mm plus height 300 mm .
  • -a set of two conical metal plates with apex angles of 60°, placed on opposite sides of the specimen's midpoint;.
  • -set of two grip assemblies for holding the specimen in the compression testing machine .
  • -a set of two displacement transducers . preferably linear variable differential transformers (LVDT s) . for measureing the deformation of specimen during the test . 

The steps of the test

The split tensile strength test is carried out by slowly applying a compressive force to a cylindrical concrete specimen until it fractures. The maximum force applied to the specimen before it fractures is recorded as the split tensile strength . The following are the steps involved in conducting this test:

  1. Prepare the concrete cylindrical specimens and place them in the compression testing machine.
  2.  Apply a compressive force to the specimens using the machine, until they fracture. 
  3.  Record the maximum force applied to each specimen before it fractured.
  4.  Calculate the average split tensile strength for all specimens tested.

Subsection 2.3 How to interpret results

The average split tensile strength for all specimens tested can be calculated by dividing the sum of all recorded maximum forces by the number of tests conducted. This value provides an indication of concrete's resistance to splitting under tension, and can be used for quality control purposes during construction projects.

Conclusion

  • The split tensile strength of concrete is an important property that needs to be determined in order to assess the quality of the material. There are several methods that can be used to determine the split tensile strength, but the most common one is the direct tension test. 
  • This test involves using a special machine to apply a force to a concrete specimen until it fails. The results of the test can then be used to calculate the split tensile strength of concrete.

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