Results 281 to 290 of about 171,478 (327)

Rebound hammer test to predict in-situ strength of concrete using recycled concrete aggregates, brick chips and stone chips

, 2020
This paper aims to investigate the performance of normal strength concrete with the use of rebound hammer, with particular emphasis on the influence of coarse aggregate. Existing codes provide guidelines for concrete using stone chips (SC).
Anindya Saha, K. M. Amanat
semanticscholar   +1 more source

An appreciation of the Schmidt rebound hammer

Magazine of Concrete Research, 1958
Summary The Schmidt rebound hammer is described and some theoretical aspects underlying the functioning of the hammer are discussed and supported by some experimental results. The method of performing the test and its limitations under different conditions are described. Correlations with rate of wear of concrete and compressive strength on the basis
openaire   +1 more source

Estimation of compressive strength of Portland cement concrete using synthetic aperture radar, ultrasonic testing, and rebound hammer

Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring
Portland cement concrete (PCC) is a versatile and widely used construction material renowned for its strength and durability. The mechanical properties of PCC, including compressive strength, flexural strength, and splitting tensile strength, play a ...
Maryam Abazarsa, Koosha Raisi, Tzuyang Yu   +2 more
semanticscholar   +1 more source

The performance prediction of impact hammers from Schmidt hammer rebound values in Istanbul metro tunnel drivages

Tunnelling and Underground Space Technology, 2002
The construction of the first metro line in Istanbul was realized between Galata and Beyoglu by a French Engineer Henry Gavand in January 1875. Six different metro projects were submitted since then to the Turkish authorities. The construction of 7-km metro tunnels phase 1 started in 1992 and the metro line of the phase 1 is opened to the service in ...
N. Bilgin, T. Dincer, H. Copur
openaire   +1 more source

Stress and Displacement Propagation in a Drilling Tube Due to Rebounding and Non-Rebounding Hammer Impact Mechanisms

Earth and Space 2012, 2012
This paper discusses results of finite element investigation of two different mechanisms to drive a drilling instrument designed for lunar exploration. The instrument consists of a hollow tubular rod, one end of which rests upon the substrate to be drilled and the other end is actuated upon by a powered mechanism.
Ramesh B. Malla, Bibek Shrestha, Kris Zacny   +2 more
openaire   +1 more source

Advancing the Rebound Hammer Method: A New Concrete Test Hammer

2011
The concrete test hammer patented by Proceq’s Ernst O. Schmidt at the beginning of the 1950’s is without a doubt the most widely used NDT instrument worldwide for rapid assessment of the condition of a concrete structure. Despite this fact, the validity of the method remains a hotly debated topic amongst experts in the NDT field. This is largely due to
openaire   +1 more source

Comparative Analysis of the Rebound Hammer and Pullout as Non-Destructive Method in Testing Concrete

European Journal of Engineering and Technology Research, 2020
A comparative analysis between Rebound Hammer and Pullout method in testing concrete was conducted in this study. Experimental analysis were carried out to compare the correctness between the two testing method in estimating the strength of concrete ...
F. Onyeka
semanticscholar   +1 more source

Assessing the spatial variability of the concrete by the rebound hammer test and compression test of drilled cores

Construction and Building Materials, 2018
The spatial variability of the mechanical properties of concrete is an important characteristic, which plays an important role in the stochastic analysis of the concrete structures, especially in the reliability analysis.
Taozhi Xu, Jie Li
semanticscholar   +1 more source

Adapting ANFIS to Improve Field Rebound Hammer Test for Concrete Compressive Strength Estimation

, 2020
Rebound hammer tests are one of the most popular non-destructive testing methods to examine the concrete compressive strength in the field. Rebound hammer tests are relatively easy to conduct and low cost.
Yu Ren Wang, D. Chiang, Yi Jao Chen
semanticscholar   +1 more source

Analisis Hubungan Nilai Rebound Schmidt Hammer Dengan Nilai Uniaxial Compressive Strength (UCS) Pada Batupasir Formasi Balikpapan Dan Pulaubalang

The Venus
Uniaxial Compressive Strength is a test method to classify the strength and characterization of intact rock. Where it is important information in determining the strength and characteristics of a rock obtained by testing using the UCS tool.
Roberto Firson Pappang, Tommy Trides
semanticscholar   +1 more source