... exhibited the highest compressive strength. Moreover, the workability in terms of slump was studied and all the slump values were very low, at about 10 mm. Lastly, the shielding efficiency against γ-rays increased as the thickness or unit weight of the HWC increased. Gharieb et al. (2021...

... materials. Emphasis is placed on the examination of ECCs’ mechanical properties, specifically their flexural behaviour, tensile behaviour, compressive strength and resistance to environmental factors. Furthermore, the rheological properties of ECCs, including workability, flowability, self-healing, crack...

... of aggregates compressive strength fresh concrete sustainability waste management & disposal workability SEM images can be used to investigate microscopic pores and cracks within concrete (Saxena and Tembhurkar, 2019). In this work, SEM was carried out on specimens with different...

... the mixture workability, functioning as do ball bearings in machinery (Shilstone, 1990). These three parameters are the foundation of Shilstone's theory. Shilstone introduced two important factors to predict the properties of concrete – the CF and the workability factor (WF). The CF is the proportion...

...) used a water reducer as a dispersant, but the influence of GO on the fluidity of the cement matrix was not studied. Inadequate fluidity is often associated with poor workability, which results in non-homogeneity in the mixture (Chandra and Björnström, 2002 ; Liu et al., 2014), so...

... lightweight concrete workability Concrete is generally mixed with other agents to improve its properties. However, reactions between the additives and hydration products of cement influence the effects of additives (Siya et al., 2017 ; Wang et al., 2015 ; Zaribaf and Kurtis, 2018...

... of nanoparticles. Decreasing setting time of geopolymer binders by adding nanoparticles enables these binders to be used in repair and restoration cases. ICE Publishing: All rights reserved 2019 compressive strength durability-related properties workability Geopolymers and nanotechnology...

... energy. Meanwhile, the utilisation of dust waste in building materials can contribute to sustainable and green development. aggregates lightweight concrete workability ICE Publishing: All rights reserved 2019 28 03 2018 12 12 2018 13 12 2018 A series of tests...

... of the same size as a reactive aggregate in the concrete mix to reduce the ITZ and improve the concrete properties. After determining the optimum replacement level based on 28 and 60 d compressive strengths, the developed RAC was characterised by measuring its workability, setting time, compressive...

...Yahya Ghasemi; Magdalena Rajczakowska; Mats Emborg; Andrzej Cwirzen The specific surface area (SSA) of constituents in a concrete mixture has a significant effect on its workability in fresh state. Excess layer theories relate the SSA to the flow behaviour of mixtures and can be used as part...

... with the increase in slag and micro fly ash. Finally, a geopolymer concrete was designed that meets the workability requirement of self-compacting concrete with comparable compressive strength without superplasticisers. cement/cementitious materials rheological/rheological properties workability...

...A. Bagheri; A. Samea Foamed concrete is a lightweight concrete produced by the incorporation of foam into cement paste or mortar. This research was carried out to investigate the effect of foam content on standard workability tests results and also the rheological parameters of foam concretes...

... tube specimens were milled for a flat surface. The specimens were tested under displacement controlled load applications at 1 mm/min. Figure 2. Metal plugs: (a) UT26·9 steel tube plug and (b) UT33·7 steel tube plug (all dimensions are in mm) fresh concrete stress workability...

..., 5, 10, 15, 30, 60, 120, 180, 1440, 2880 and 4320 min. The testing procedure was conducted according to BS 1881: Part 122 (BSI, 2011). 16 12 2016 30 06 2017 14 08 2017 ICE Publishing: All rights reserved 2017 compressive strength sulfates/sulfate resistance workability...

... the increase in concrete strength that can reach 25% and the increase of workability, the water-reducing admixture improves the durability properties of concrete by decreasing its porosity and water permeability, and gives a better surface finishing as well. 22 05 2017 10 07 2017 10 07 2017...

...Yahya Ghasemi; Mats Emborg; Andrzej Cwirzen Workability in the fresh state is one of the most important factors in design and production of concrete and can be related to the water demand of the mixture, which in addition to other factors is a function of the particle shape of aggregates...

... and a lower ratio of mortar band thickness. The results demonstrate that there is a high degree of correlation between the segregation index and the mortar band thickness in all the mixtures. ICE Publishing: All rights reserved 2017 fresh concrete mortar workability Self-consolidating...

.../rheological properties workability Concrete is considered to be an indispensable man-made construction material because of its economical production costs and easy casting characteristics, which mean it can be placed in any mould shape. In the past, satisfactory concrete for structural use could...

... fibre-reinforced concrete tensile properties workability Steel-fibre-reinforced concrete (SFRC) is a relatively new multiple-composite material developed during the early 1970s, in which short steel fibres are randomly distributed in concrete (Shah and Rangan, 1971). With proper mix design...

...Xuhao Wang; Peter Taylor; Xin Wang The science of rheology is not strictly applicable for low workability of slipform concrete mixtures because such mixtures are not fluids. However, the workability of slipform concrete mixtures can be assessed using the concepts behind describing rheological...