The combined use of low heat Portland cement (LHC), MgO-based expansive agent (MEA) and shrinkage reducing admixture (SRA) is beneficial to reduce the cracking risk concrete. In this study, effects MEA SRA on rheological behaviour LHC paste were investigated using dynamic static shearing tests. response surface methodology was used estimate MEA, SRA, superplasticizer parameters, while zeta pote...

Monodisperse polystyrene (PS) seed latex was initially prepared by a dispersion polymerization, and then polyaniline (PANI)-coated PS composite particles were synthesized by diffusion and polymerization of aniline at the interface. Characteristics of the obtained PS/PANI composite particles such as morphology and thermal property were examined using SEM and TGA, respectively. In addition, we em...

Abstract The paper presents a new validation study of unified rheological model, in reproducing creep strains from recent experimental performed on grade S275JR coupons. objective this research is to further test the modelling capabilities proposed model and its validity for application general structural fire engineering analysis. composed two serially connected Kelvin‐Voight elements, used re...

We present a simple model that can be used to account for the rheological behaviour observed in recent experiments on micellar gels. The model combines attachment–detachment kinetics with stretching due to shear, and shows well-defined jammed and flowing states. The large-deviation function (LDF) for the coarse-grained velocity becomes increasingly non-quadratic as the applied force F is increa...

Engineers worldwide use various additives or chemical admixtures, such as polymer latexes, to improve the properties of cementitious materials for many construction projects. In this paper, influence acrylic epoxy resin emulsions, along with a polycarboxylate superplasticiser on some basic (rheological behaviour, setting time, bleeding, strength) thick cement grouts is presented. The experiment...

The process of assembling particles into organized functional structures is influenced by the rheological properties of the matrix fluid in which the assembly takes place. Therefore, tuning these properties represents a viable and as yet unexplored approach for controlling particle assembly. In this Letter, we examine the effect of the matrix fluid yield stress on the directed assembly of polar...

Consideration of sludge rheology is very important for a proper solids transport and to obtain the necessary settler capacity. Although a true yield stress does not exist, large apparent viscosities at low shear rates inhibit an efficient sludge transport. Research indicates that the dimensionless ratio of gravity to viscous forces is an important operational parameter towards settler capacity....