Dynamic Splitting-Tensile Test and Numerical Analysis for Brittle Materials

Standard impermeability test is used to evaluate the impermeability of concrete without bearing history. For having no test to evaluate fiber concrete with load-supporting history under service environment, a new test, splitting tensile permeability test is proposed in the paper. The proposed test method involves two parts called splitting tensile test and load holding permeability test. The splitting tensile test is used to get fiber concrete specimen with tiny crack which impermeability measured by the load holding permeability test. Based on the concept of water proof grade in underground engineering, a new method for defining fiber content is proposed to improve the impermeability of fiber concrete. The new test and method is used to define the fiber content in a subway station of shanghai metro line 7, which have well impermeability upon engineering completion. So splitting tensile impermeability test is proved to have good reliability and feasibility for evaluating fiber concrete servicing in underground engineering.

Download Full-text

Experimental and Numerical Analysis of the Tensile Test on the A633 HSLA Steel Plate Specimens with Edge Crack

International Journal of Mechanical Engineering ◽

10.14445/23488360/ijme-v1i7p103 ◽

2014 ◽

Vol 1 (7) ◽

pp. 16-25

Author(s):

Shahin Nayyeri Amiri ◽

Caesar Abishdid ◽

Asad Esmaeily

Keyword(s):

Numerical Analysis ◽

Tensile Test ◽

Edge Crack ◽

Steel Plate ◽

Hsla Steel

Download Full-text

A COMPARISON OF TESTING METHODS FOR DETERMINATION OF SPRAYED CONCRETE TENSILE STRENGTH

Acta Polytechnica CTU Proceedings ◽

10.14311/app.2019.23.0054 ◽

2019 ◽

Vol 23 ◽

pp. 54-57

Author(s):

Martin Závacký

Keyword(s):

Tensile Strength ◽

Tensile Test ◽

Construction Material ◽

Common Reason ◽

Bending Moments ◽

Testing Methods ◽

Sprayed Concrete ◽

Pure Tension ◽

Splitting Tensile Test

Sprayed concrete is important construction material in tunnelling. Primary lining is essential in NATM where the sprayed concrete can be loaded by tension due to bending moments. The tension is common reason of failure because concrete has a relatively low tensile strength. The tensile strength is usually determined by splitting tensile test in laboratory. However, the results can be distorted because the specimen is not loaded by pure tension in this case. The paper compares results of concrete tensile strength determined by two methods: indirect by the splitting tensile test and direct by the modified tensile test.

Download Full-text