When evaluating a single test consisting of three 28-day standard cured cylinders, if the compressive strength of any one cylinder differs from the average by more than 10%, that cylinder shall be discarded and the average strength determined using the strengths of the remaining two cylinders. ...
Steel plate Procedure for compression test of concrete Clean the cylinder mould and coat the inside lightly with form oil, then place on a clean, level and firm surface, ie the steel plate. Collect a sample. Fill 1/2 the volume of the mould with concrete then compact by rodding 25 ...
A literature survey regarding the controversy surrounding the assessment of concrete strength through field-cast laboratory-cured cylinder tests is presented. Inconsistencies associated with the drilling and testing of cores for determining in-place concrete strength are pointed out. On the basis of these...
2015-04-21上传 The Effect of Test Cylinder Size on Concrete Strength-IR-06-:试验缸的尺寸对混凝土strength-ir-06效果— 文档格式: .pdf 文档大小: 753.02K 文档页数: 83页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类:
Surface preparation: The concrete surface should be prepared using the same procedure used as for FRP bonding described above. 2. Core drilling: A diamond core bit should be used to drill a 50mm (internal diameter) cylinder with an axis of 90 degrees to the surface. The drilling should be...
The intent is to minimize complete dependence on conventional cylinder-testing procedure. The objective of this paper is to underscore findings of the research project with a focus on investigating the effects on concrete maturity index and strength due to type and location of maturity sensors, and...
Splitting alongside failure cones indicated that the platens of the test apparatus did not provide friction to restrict lateral expansion near cylinder ends. Further, failure modes observed in high-strength specimens were more explosive as compared to their counterpart in low-strength specimens, and a...
In this test procedure, the repair material is bonded to a substrate mortar specimen on a slant elliptical plane inclined at an angle 30o from vertical. It assumes that the failure of the composite cylinder occurs preferentially on slant surface to calculate the bond strength. However, it was ...
Standard Practice for Making Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Table ASTM Int (2013), 10.1520/C1176 Google Scholar C136-14, 2014 C136-14 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates ASTM (2014), 10.1520/C0136 Google Scholar C138-17a, 2013...
The rotational (Brookfield) viscometer test (ASTMD4402) consists of a rotational coaxial cylinder viscometer and a temperaturecontrol unit. The test is carried out on unaged binders. The asphalt binder sample is placed in the sample chamber at a temperature of 135°C (275°F); then both are...