... replaced with manufactured sand (MS) in the production of concrete, wherein it was observed that, the residual compressive strength decreases as the temperature increases. Based on ultrasonic pulse velocity (UPV) test results, the quality of concrete can be categorised from “Excellent to Good”. The bond...

.... The study employed a systematic experimental design to measure residual compressive strength, surface damage and mass loss. Findings Results indicate that moderate heating (=350 °C) enhances strength due to internal autoclaving, while temperatures above 400 °C lead to significant microstructural...

.... After being exposed to high temperatures (200⁰C, 400⁰C and 600⁰C) for 2 h durations, the compressive strength, flexural strength (fL) and bond strength were assessed and compared to control concrete (M1). Numerous researchers have investigated the bond strength...

... with a concentration of 12 M NaOH to produce the concrete. After several trials, the alkaline-to-binder ratio was determined to be 0.43. Findings The compressive strength values at 28 days for specimens FG1, FG2, FG3, FG4 and FG5 are 35.42 MPa, 41.26 MPa, 44.79 MPa, 50.51 MPa and 46.33 MPa, respectively...

...Prince Singh; Brajkishor Prasad; Virendra Kumar Purpose This study aims to investigate the compressive strength of concretes incorporating Linz-Donawitz slag (LD slag) as partial replacement for natural fine and coarse aggregates and compare them with traditional concrete. Design/methodology...

... rights only Elevated temperature Flexural behaviour Compressive strength Recycled Aggregate Concrete (RAC) Hybrid fibres The waste concrete components such as unused concrete precast elements, pavements in airports, kerbs, etc. are mechanically broken into smaller parts...

... heated in an electric furnace up to 100, 200, 300, 400, 500 and 600 C and kept at these temperatures for 2 h duration. After the specimens were cooled in the furnace, mass loss, ultrasonic pulse velocity (UPV), compressive strength, split tensile strength (STS), flexural strength (FS) and modulus...

... compressive strength, tensile strength and higher porosity/voids/internal cracks than the specimens heated in an electric furnace at the same temperature. Further, a good agreement with compressive strength and rebound numbers was observed for each of the two heating systems (flames coming from gas burners...

... standard fire curve. Compressive strength, tensile strength, thermal crack pattern and spalling of heated concrete specimens were evaluated by experimental investigation. Scanning electron microscopy and thermo-gravimetric analysis were performed to investigate the microstructure properties of heated...

... resistance with regular concrete mix. Besides, the proposed NCSF-CRETE compressive strength is evaluated compared to mixes with NC and SF each used separately at different curing ages. Besides, NSCF and compared mixes are exposed to an indirect fire testing program – two hours exposure – for: 300, 450...

... deterioration than compressive strength of the exposed NSC. Research limitations/implications A special scale factor needs to be investigated for the NSC. Originality/value Although a lot of effort is placed in evaluating the benefits of using nano materials in structural concrete, this paper presents...

... Neuenschwander can be contacted at: neuenschwander@ibk.baug.ethz.ch 02 06 2017 23 03 2017 15 05 2017 © Emerald Publishing Limited 2018 Emerald Publishing Limited Licensed re-use rights only Temperature Finite element analysis Damage Compressive strength Elastic moduli...

... The results of testing revealed that the addition of 10 per cent SF was found to result in the greatest increase in compressive strength and flexural strength along with decreased the residual strengths. The addition of FA increased the compressive strength and enhanced the residual compressive strength...

... performance changes have been presented and discussed. Split tensile strengths are related to compressive strengths for all the cases of cooling regimes. Concrete Fire Elevated temperatures Compressive strength Cooling regimes A. F. Bingol. and Rustem Gul, 2008, Effect of elevated temperatures...

...A. Rahim; U. Sharma; K. Murugesan; A. Sharma; P. Arora This paper presents results of an experimental study undertaken to optimize the residual compressive strength of heated concrete with respect to various mix design parameters using the Taguchi method. The design of experiments (DoE) was carried...

...Sharath Anumala; Umesh Sharma This study aims to find out the compressive strength, split tensile strength, flexural strength, bond strength and permeability of steel fibre reinforced concrete subjected to elevated temperatures ranging from room temperature to 800°C. The specimens were exposed...

...Yi-Hai Li; Jean-Marc Franssen An investigation into temperature induced degradation of the compressive strength of concrete including that under cooling phase is carried out. The paper gathers and reviews a considerable amount of test data, considering the influence of different test parameters...