Recent durability studies on concrete structure

Tang, Shengwen; Yao, Yan; Andrade, Carmen

doi:10.1016/j.cemconres.2015.05.021

Cited by 448 publications

(152 citation statements)

References 114 publications

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“…The interaction of crystallization additives in the capillary porous structure of 'standard' concrete types has been studied by many authors [1,2]. In the case of SCC and with respect to the fact that they are new and highly progressive materials, the situation is different.…”

Section: Introductionmentioning

confidence: 99%

The evaluation of the effect of crystallization additives on long term durability of self-compacting concrete

Dufka

Melichar

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The article deals with the influence of crystallisation additives on the life of selfcompacting concrete (so-called SCC concrete) in case of exposure to aggressive gases. The effect of crystallization additives on the properties of such modified composites is generally tested during exposure of liquid media, in this case the attention is focused on influence of selected types of aggressive gases (CO 2 and SO 2 ). The impact of individual types of aggressive gases is assessed on the basis of a set of physico-mechanical and physico-chemical analyses.

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Section: Introductionmentioning

confidence: 99%

The evaluation of the effect of crystallization additives on long term durability of self-compacting concrete

Dufka

Melichar

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…A great number of porous systems, e.g. tree branches, 1,2 leaf veins, blood vessels, bronchial tree, neural dendrites, cement-based materials, [3][4][5][6][7] drainage network of river basins, lightning, cracks and particle aggregations, present typical fractal network features. 8 Xu et al considered that, on the one side, although the configuration and construction of fractal network embedded in natural transport systems are diverse, the statistical characteristics of natural tree-like topology are similar.…”

Section: Introductionmentioning

confidence: 99%

The Evaluation of Electrical Impedance of Three-Dimensional Fractal Networks Embedded in a Cube

et al. 2017

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This paper presents a preliminary work to evaluate the electrical impedance of threedimensional pore fractal networks embedded in a cube. The construction and structural parameters of pore and electrical networks are illustrated in detailed. The total impedance response (modulus and phase) of networks is primarily associated with structural parameter of network, pore structure parameter of cube, conductivity of pore and solid phases. The impedance response of cube with the evolution of fractal network is analyzed comprehensively in this work. Besides, the influence of conductivity of pore phase caused by different types of electrolytes, electrical frequencies and conductivity of solid phase on the total impedance response is systematically studied.

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“…Water transport in cement-based materials is an important issue since it significantly affects chemical ion ingress, steel corrosion, freeze-thaw cycles, calcium leaching and other durability related events (Basheer et al 2001;Tang et al 2015). Permeability, which is defined as the flow rate of a sole fluid through a solid under the unit pressure gradient, is the property that partly controls the process of water transport, and of great importance in evaluating the durability of such materials (Zhou 2014a).…”

Section: Introductionmentioning

confidence: 99%

Hygro-Gradient Model for Permeability of Unsaturated Cementitious Composites

Han

Maekawa

2017

ACT

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A new method for predicting the water absorption process of unsaturated cementitious composites is proposed, and its functionality is experimentally verified. The mechanism of the capillarity on water absorption process is mathematically termed by a slip boundary condition of micro-flow of pore water, and employed to an unsaturated water permeation on the scheme of multi-scale modeling. The rapid sorption just after the exposure to condensed water is fairly simulated owing to the non-local formulation of hygro-gradient, which simply represents the thermodynamics of non-equilibrated states in dry pores. The proposed model of complexity of micro-pore connection is examined in terms of the initial water content, porosity and saturation of micro-pore structure and volume ratio of aggregate. It is further examined in terms of the intrinsic hydraulic profile by using the Boltzmann's transform.

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Recent durability studies on concrete structure

Cited by 448 publications

References 114 publications

The evaluation of the effect of crystallization additives on long term durability of self-compacting concrete

The evaluation of the effect of crystallization additives on long term durability of self-compacting concrete

The Evaluation of Electrical Impedance of Three-Dimensional Fractal Networks Embedded in a Cube

Hygro-Gradient Model for Permeability of Unsaturated Cementitious Composites

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