Ultra-High Performance Concrete (UHPC) exhibits high autogenous shrinkage (AS) which significantly increases the risk of early age cracking. To predict risks cracking environmentally friendly CEM III-based UHPC, a numerical model originally developed for crack assessment ordinary concrete, has been further and applied on demonstration wall with cracking, cast non-deforming slab. The design was ...

Neuronal activity in the hyperstriatum ventrale, pars caudale (HVc) is associated with and necessary for the production of song by songbirds. HVc neurons also respond to acoustic stimuli. The present investigation assessed the auditory response properties of neurons in HVc by testing with the individual bird's own (autogenous) song and the songs of conspecific birds. Throughout HVc, multiunit c...

The high autogenous shrinkage of geopolymers hampers their application as building materials. In this study, pristine steel slag was used an expansion material to mitigate in geopolymers. influence on the chemical deformation alkali-activated fly ash-based is investigated. microstructure expanded system studied by X-ray diffraction (XRD), FTIR measurement, thermogravimetric measurement (TGA), s...

In this paper iron tailing sand (TS) are used as aggerate to develop ultra high-performance concrete (UHPC). The mix proportion of UHPC is designed and TS were added by 25%, 50%, 75% 100% (wt.%, i.e., weight percentage) replace natural river sand. Firstly, the influence on slurry behavior was carried out. experimental result indicates that with continuously increasing content TS, workability de...

Early age cracking in concrete is caused by a combination of the chemical and autogenous shrinkage exhaustion water pores during hydration cement phases. Generally, this process takes place first 72 h casting. The use supplementary cementitious materials (SCMs) can mitigate due to several factors, among them: dilution effect, provision extra nucleation sites high specific surface SCMs, increase...