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This paper presents an experimental and analytical study of rate-dependent ultra-high performance fiber reinforced concrete (UHPFRC) behavior. UHPFRC three- and four-point bending response was determined on plates subjected to quasi-static loading. Drop weight tests were performed in order to...
An experimental investigation was performed to measure the restrained and unrestrained plastic shrinkage properties of small mortar specimens containing short flax fibres (10–38 mm in length) in amounts ranging from 0.05% to 0.3% by volume. Based on the number of cracks, total crack area, and...
This paper presents an experimental study on the durability properties of self compacting concretes (SCCs) with high volume replacements of fly ash. Eight fly ash self compacting concretes of various strength grades were designed at desired fly ash percentages of 0, 10, 30, 50, 70 and 85%, in...
This research investigates the flexural behavior of fiber reinforced cementitious composites (FRCC) with four different types of fibers and two volume fraction contents (0.4% and 1.2%) within a nominally identical mortar matrix (56 MPa compressive strength). The four fibers are high strength...
This paper presents a discussion on a paper authored by Chung et al. (Chung L, Najm H, Balaguru P. Flexural behaviour of concrete slabs with corroded bars. Cement Concr Compos 2008;30:184-93).
A study was carried out into the potential use of slag from the Imperial Smelting Furnace method of zinc production (ISF slag) as a fine aggregate in concrete. One of the main issues associated with the use of ISF slag was that zinc and lead ions are known to cause retardation of the cement...
The effect of adding significant percentages of alkaline earth carbonate minerals (calcite and dolomite) to metakaolin-based geopolymers is investigated by compressive strength testing, X-ray diffractometry and electron microscopy, with the aim of better understanding the role played by calcium...
Fires can expose concrete to extreme temperatures. Thus, it is important to know the effect of elevated temperature on the concrete property. High performance concrete (HPC) often contains other supplemental cementitious materials besides cement, such as ground granulated blast furnace slag...
This paper presents a study on geopolymers and geopolymer/aggregate composites made with class F fly ash. Samples were heated up to 800 °C to evaluate strength loss due to thermal damage. The geopolymers exhibited strength increases of about 53% after temperature exposure. However,...
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