What is it about?
Test variables consisted of the magnetic field intensity (MFI) that treated on water and water to cement (w/c) ratio. For this purpose, eight mix compositions with various MFI and two w/c ratios of 0.37 and 0.42 were considered. In each w/c ratio, the nominal maximum aggregate size and all mix designs were constant and only the magnetic fields changed in four levels. Three-point bending tests were conducted on 96 notched beams, and the results were analyzed by means of the size effect method. Satisfactory results were achieved in the fracture parameters and the mechanical properties of SCLC.
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Why is it important?
There are some researches on the use of magnetic water (MW) in the production of concrete. However, most of them have usually focused on the mechanical properties and workability of normal concrete. It is worth adding that although many studies have been done on the mechanical properties of self-compacting lightweight (SCLC), very few of them have focused on the fracture parameters of SCLC.
Perspectives
This research focuses on the fracture parameters and mechanical properties of SCLC mixed with MW considering four different magnetic field intensity levels that treated on water and two water to cement ratios of 0.37 and 0.42. The SCLC fracture parameters are studied using the size effect method, according to RILEM FMT-89 (1990) recommendations. For all mixes, the initial fracture energy, fracture toughness, crack-tip opening displacement, length of fracture process zone, compressive strength, tensile strength and modulus of elasticity were determined to be used for assess the effects of MW on fracture parameters and mechanical properties of SCLC.
Hasan Salehi
Shahid Rajaee Teacher Training University
Read the Original
This page is a summary of: Effect of magnetic-field intensity on fracture behaviors of self-compacting lightweight concrete, Magazine of Concrete Research, March 2018, ICE Publishing,
DOI: 10.1680/jmacr.17.00418.
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