Effect of strain rate and size on tensile strength of concrete. John R,Antoun T,Rajendran A M. Proceedings,1991APS Topical Conference on Shock Compression of Condensed Matter . 1992JOHN R,ANTOUNT,RAJENDRANAM.Ef
间接测量方法与岩石抗拉试验的方法一样, 在岩石力学中我们称之为巴西抗拉强度试验 (Brazilian Tensile Strength Test), 试验方法如下图所示, 以1.2-2.4MPa/min的速度给试验施加压力, 记录试件破坏时的压力P, 然后通过下面的算式计算混凝土的抗拉强度, 其中D为试件直径, L为试件长度. 下面的图片显示了在不同压力...
lower maximum carbon content of the L grades and for the higher minimum yield and tensile strength of the non-L grades. swagelok.com.cn 双标准材质如304/304L, 316/316L和317/317L满足L等级较低的最大碳含量要求以及非L等级较高的最大 屈 服和 拉 伸 强度 要 求。 swagelok.com.cn [...] ...
It is stated that the method allows to achieve repeatable results regarding the sulfate resistance of a concrete. However, the application of tensile strength on prisms as the basic measurement principle results in a relatively high effort for testing and a large scatter compared to other test ...
We are trying to use 100mm cubes for testing concrete strength.When done trial test we found that the ratio of 150mm cube strength to 100mm cube strength is varies very much(when plotted R2=0.1) and is about 0.88 to 0.91 for C40 / 50 concrete. Is there anyone else has done any tria...
Designation: C1583/C1583M − 20Standard Test Method forTensile Strength of Concrete Surfaces and the BondStrength or Tensile Strength of Concrete Repair and OverlayMaterials by Direct Tension (Pull-off Method) 1This standard is issued under the f i xed designation C1583/C1583M; the number ...
as concrete, wood or other fibrous materials, a larger surface [...] elcometer.com 在低粘合力基体上检测涂层时,比如 混凝土、木材或其他纤维材料,锻模的表面面积需较大,以提高精度、可重复性和再现性。 elcometer.com In addition, by strength of its professional standard testing and certification,...
Standard: ASTM C1583-13 – Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method) Scope: ASTM C1583 is used to determine the following: The near-surface tensile ...
* The εcr is measured based on the deformation of TSTM movable grip, rather than measuring the concrete directly. Hence, the measured value may overestimate the actual strain. Table 2. Failure stress to strength ratio under partial restrained test. Ref.Mixture IDσcr/fsplσcr/ftRestraint degre...
the tensile strength of the interface at different ages was determined for each test group. The obtained data were then used to fit a curve representing the relationship between the early-age tensile strength of concrete and its age, using MATLAB R2020b software. The results show that there is...