10% Nov 22, 2011 Soutsos M.N., Breysse D., Garnier V., Goncalves A., Monteiro A.V. (2012) Estimation of on-site compressive strength of concrete. In: Breysse D. (eds) Non-Destructive Assessment of Concrete Structures: Reliability and Limits of Single and Combined Techniques. RILEM State of the Art Reports, vol 1.

Get PriceOct 10, 2011 Title: Estimation of compressive strength based on Pull-Out bond test results for on-site concrete quality control Author(s): Michel Serge Lorrain, Mônica Pinto Barbosa, Luiz Carlos Pinto da Silva Filho Publication: IBRACON Volume: 4 Issue: 4 Appears on pages(s): 582 591 Keywords: bond stress, concrete compressive strength, quality control of concrete, pull-out test

Get Pricebut conversely the compressive strength increases.3,4 For this reason, if the water content of concrete is different, the relation between the ultrasonic velocity and compressive strength will also differ. Accordingly, the ultrasonic velocity used to estimate the strength of concrete in structure should be measured under the same water content ...

Get PriceJan 09, 2020 5 Methods for On-Site Evaluation of Concrete Strength FPrimeC Solutions Inc. On-site evaluation of concrete strength is a challenge in the assessment of existing structures. Combination of NDT methods can be used to measure strength.

Get PriceJan 10, 2018 A method for such cases was proposed, in which the strength estimation equation is developed using core specimens taken from the concrete in the target structure. 6, 7 Even in this case, however, unless a sufficient quantity and breadth of compressive strength data are obtained, it is difficult to accurately determine the trends in the relation ...

Get PriceApr 26, 2012 The compressive strength of concrete was estimated according to various curing ages as well. In the results, shear wave velocity was very closely related to the compressive strength. The results further showed that the estimation of compressive strength of concrete using shear wave velocity is very effective and reliable.

Get PriceOct 10, 2011 Title: Estimation of compressive strength based on Pull-Out bond test results for on-site concrete quality control Author(s): Michel Serge Lorrain, Mônica Pinto Barbosa, Luiz Carlos Pinto da Silva Filho Publication: IBRACON Volume: 4 Issue: 4 Appears on pages(s): 582 591 Keywords: bond stress, concrete compressive strength, quality control of concrete, pull-out test

Get PriceSoutsos, M., Denys, B., Garnier, V., Goncalves, A., Monteiro, A. (2012). Chapter 3 - Estimation of on-site compressive strength of concrete.In D. Breysse (Ed.), Non Destructive Assessment of Concrete Structures: Reliability and Limits of Single and Combined Techniques, State-of the-Art Report of the RILEM Technical Committee 207-INR: State-of the-Art Report of the RILEM Technical Committee ...

Get Pricetechnique to estimate the compressive strength of it. This study help to predict the can compressive strength of pumpable concrete before its placement. It will reduce the number of trials, and save cost, labour and time. Keywords: Machine learning techniques, Support vector machine,Pumpable concrete, Compressive strength, Paste content

Get Pricebut conversely the compressive strength increases.3,4 For this reason, if the water content of concrete is different, the relation between the ultrasonic velocity and compressive strength will also differ. Accordingly, the ultrasonic velocity used to estimate the strength of concrete in structure should be measured under the same water content ...

Get PriceApr 26, 2012 The compressive strength of concrete was estimated according to various curing ages as well. In the results, shear wave velocity was very closely related to the compressive strength. The results further showed that the estimation of compressive strength of concrete using shear wave velocity is very effective and reliable.

Get PriceEstimation of concrete strength is an important issue in ready-mixed concrete industry, especially, in proportioning new mixtures and for the quality assurance of the concrete produced. In this article, on the basis of the existing experimental data of compressive strength of normal and recycled aggregate concrete and equation for compressive strength calculating given in Technical regulation ...

Get PriceFor the mixes tested, the results obtained demonstrate that: the compressive strength of cubic specimens of concrete are approximately equal to the one obtained in mortar specimens 126 f (around 3% higher); while the cylindrical compressive strength are

Get PriceJul 14, 2021 The objective of this study was to develop relationships and equations that might estimate concrete compressive strength and aggregate to cement ratio (A/C ratio) for concrete based on different workability by using Schmidt hummer and design of concrete mix by using naturally available materials in Nineveh, northern Iraq. Two groups of concrete mixes with different workability were

Get PriceJul 01, 2013 Changing in compressive strength and ultrasonic pulse velocity due to aging in self- compacted concrete without fibers and with nano-SiO 2 as much as 0, 2, 4 and 6 wt.% of the cement used in the concrete, can be seen in Fig. 12A–D.

Get PriceEstimation of compressive strength based on Pull-Out bond test results for on-site concrete quality control. Estimativa da resistência à compressão a partir de resultados de ensaios de aderência tipo Pull-Out para controle da qualidade do concreto na obra

Get PriceOAI identifier: oai:pure.qub.ac.uk/portal:publications/9c860927-5d39-4ee5-9aed-1846c41bb2ec

Get PriceThe compressive strength of concrete is mostly used criterion in producing concrete. However, testing for compressive strength of concrete specimens is a complicated and time-consuming task. More importantly, it is too late to make improvement if the test result does not satisfy the required strength, since the test is usually performed at the 28th day after the placement of concrete at the ...

Get PriceFor the estimation of compressive strength using concrete core specimens, three different concrete core diameters were examined: 30, 50, and 100 mm. Based on 61 measured compressive strengths of core specimens, a simple strength correction factor is investigated.

Get Pricea) to estimate in situ characteristic compressive strength f ck,is of a test region and/or in situ strength at specific locations (Clause 8) b) assessment of compressive strength class of concrete supplied to a structure under construction where there is doubt about the compressive strength based on results of standard tests or doubt

Get PriceESTIMATION OF COMPRESSIVE STRENGTH OF CONCRETE IN EXISTING STRUCTURES BASED ON IN SITU TEST DATA. A Bayesian statistics approach is presented for combining compressive strength data from cores and nondestructive test data such as pulse velocity and rebound number, as well as sujective data, to estimate the mean compressive strength of concrete in an existing

Get PriceEstimation of compressive strength based on Pull-Out bond test results for on-site concrete quality control M. S. Lorrain, M. P. Barbosa, L. C. P. Silva Fº; Affiliations ...

Get PriceKey words: compressive strength, estimate strength of concrete, recycled aggregate. 1. INTRODUCTION When having stress applied, the response of concrete depends on the stress type, and on influence that the combination of various factors performs on porosity of the different structural components of concrete.

Get PriceA. ACI 228.1R-19, “Report on Methods for Estimating In-Place Concrete Strength,” reviews several methods that are used for this purpose. They include: Most of these tests don’t directly measure the compressive strength of the concrete in the structure. They measure another property that can be correlated to compressive strength.

Get PriceEstimating Concrete Compressive Strength on Site Samia Hannachi1, and M Nacer Guetteche2 1University Larbi Benmhidi Algeria 2University of Constantine Algeria Abstract: Compressive strength of concrete is the most import ant input data for engineering calculations

Get PriceJul 02, 2020 An algorithm used to relate the concrete maturity and ultrasonic wave propagation to the concrete compressive strength. This study leads to a method of acquiring data for forecasting in-situ early-age strength of concrete, used for secure construction of concrete structures, that is fast, cost effective, and comprehensive for SHM (structural ...

Get PriceMay 24, 2018 In this article, we will briefly review how to Estimate Strength of Concrete Using NDT Methods. Compressive strength of concrete is by far the most important property of concrete. It represents the mechanical properties of concrete; for example, the 28 days compressive strength of concrete cylinders is the key parameter in most design codes (ACI 318-14, CSA A23.3-14).

Get PriceMaturity method is a relatively simple approach for estimating the in-place compressive strength of concrete, specifically at early ages less than 14 days. Once the maturity curve is developed in the laboratory for a specific project, it can be used for on-site estimation of compressive strength of concrete in real-time.

Get PriceJun 11, 2019 Methods for Testing Compressive Strength of Concrete. 1. Rebound Hammer or Schmidt Hammer (ASTM C805) Method: A spring release mechanism is used to activate a hammer which impacts a plunger to ...

Get PriceApr 18, 2010 I know that concrete needs some time to hydrate; therefore (compressive strength test specimens or cubes) are placed in water for 28 days (at that time concrete reaches 90% of its total comp. strength) and then tested and the results are usually used in design, BUT the structure itself cannot be placed in water!

Get PriceNov 10, 2019 Finally, 15 cm cubes and 100 × 100 × 30 cm concrete slabs were cast to estimate the compressive strength of concrete using Schmidt rebound hammer, core, and cube testing. 2.3. Sample preparation. The compressive strength cube test was conducted under both wet and dry curing conditions at 11, 28, 42 and 90 days.

Get PriceFulltext: english, pdf (403 KB) pages 1182-1186: downloads: 29* cite: APA 6th Edition Ceylan*, H., Davraz, M. Sivri, M. (2021). Estimation of Compressive Strength of Waste Andesite Powder-Added Concrete Using an Artifical Neural Network.

Get PriceEstimation of compressive strength based on Pull-Out bond test results for on-site concrete quality control. Revista IBRACON de Estruturas e Materiais. São Paulo, SP, Brazil: IBRACON - Instituto Brasileiro do Concreto, v. 4, n. 4, p. 582-591, 2011.

Get PriceApr 25, 2014 From the table 6 and graph 1 it can be seen that, the compressive strength of M25 grade normal concrete at 28 days is 39.53 N/mm2. At the same time, the compressive strength at 20 % replacement is found to be 38.96 N/mm2. Also, there is sudden fall in strength at 40% and 60% replacement, as the quantity of RCA increases.

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