scholarly journals PCM-Concrete Interfacial Tensile Behavior Using Nano-SiO2 Based on Splitting-Tensile Test

2021 ◽  
Vol 19 (4) ◽  
pp. 321-334
Author(s):  
Kan Li ◽  
Zhiqiang Wei ◽  
Hongxia Qiaou ◽  
Chenggong Lu ◽  
Hakuzweyezu Theogene
Keyword(s):  
Tensile Test ◽  
Tensile Behavior ◽  
Splitting Tensile Test

Study on Fiber Concrete Impermeability Test and its Application in Subway Station

2011 ◽  
Vol 261-263 ◽  
pp. 280-286
Author(s):  
Feng Qi ◽  
Yong Xiang Wu ◽  
Wen Jin Zhang
Keyword(s):  
Tensile Test ◽  
Concrete Specimen ◽  
Fiber Content ◽  
Test Method ◽  
Subway Station ◽  
Permeability Test ◽  
Underground Engineering ◽  
Good Reliability ◽  
Fiber Concrete ◽  
Splitting Tensile Test

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.

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

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.

scholarly journals Tensile Behavior of Self-Compacting Steel Fiber Reinforced Concrete Evaluated by Different Test Methods

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 251
Author(s):  
Xinxin Ding ◽  
Changyong Li ◽  
Minglei Zhao ◽  
Jie Li ◽  
Haibin Geng ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Tensile Test ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Axial Tensile ◽  
Splitting Tensile Test

Due to the mechanical properties related closely to the distribution of steel fibers in concrete matrix, the assessment of tensile strength of self-compacting steel fiber reinforced concrete (SFRC) is significant for the engineering application. In this paper, seven groups of self-compacting SFRC were produced with the mix proportion designed by using the steel fiber-aggregates skeleton packing test method. The hooked-end steel fibers with length of 25.1 mm, 29.8 mm and 34.8 mm were used, and the volume fraction varied from 0.4% to 1.4%. The axial tensile test of notched sectional prism specimen and the splitting tensile test of cube specimen were carried out. Results show that the axial tensile strength was higher than the splitting tensile strength for the same self-compacting SFRC, the axial tensile work and toughness was not related to the length of steel fiber. Finally, the equations for the prediction of tensile strength of self-compacting SFRC are proposed considering the fiber distribution and fiber factor, and the adaptability of splitting tensile test for self-compacting SFRC is discussed.

Failure Mechanism of Cementitious Nanocomposites Reinforced by Multi-Walled and Single-Walled Carbon Nanotubes Under Splitting Tensile Test

2018 ◽  
Author(s):  
Robabeh Jazaei ◽  
Moses Karakouzian ◽  
Brendan O’Toole ◽  
Jaeyun Moon ◽  
Samad Gharehdaghi
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Test ◽  
Failure Mechanism ◽  
Cement Mortar ◽  
Single Walled Carbon Nanotubes ◽  
Cement Matrix ◽  
Cooh Group ◽  
Single Walled Carbon ◽  
Splitting Tensile Test ◽  
Walled Carbon Nanotubes

Sudden concrete failure is due to inelastic deformations of concrete subjected to tension. However, synthesizing nanomaterials reinforcements has significant impact on cement-based composites failure mechanism. Nanomaterials morphology bridges cement crystals as homogeneous and ductile matrix. In this experiment, cement matrix with water to cement ratio of 0.5 reinforced by 0.2–0.6 wt% of functionalized (COOH group) multi-walled and single-walled carbon nanotubes were used. After sonication of carbon nanotubes in water solution for an hour, the cementitious nanocomposites were casted in cylindrical molds (25 mm diameter and 50 mm height). Failure mechanism of cementitious nanocomposite showed considerable ductility throughout splitting tensile test compared to cement mortar. Additionally, the failure pattern after developing the initial crack provided additional time before ultimate failure occurred in cement-based nanocomposites. The evolution of crack propagation was assessed until ultimate specimen failure during splitting-tensile test on cementitious nanocomposite surface. The deformation of cross section from circle to oval shape augmented tensile strength by 50% in cementitious nanocomposite compared to conventional cement mortar.

scholarly journals Splitting tensile test for fibre reinforced concrete

2011 ◽  
Vol 44 (8) ◽  
pp. 1441-1449 ◽  
Author(s):  
E. Denneman ◽  
E. P. Kearsley ◽  
A. T. Visser
Keyword(s):  
Reinforced Concrete ◽  
Tensile Test ◽  
Fibre Reinforced Concrete ◽  
Splitting Tensile Test
Sign in / Sign up

Export Citation Format

Share Document