A new chemo-mechanical model of damage in concrete under sulfate attack

A poroplastic model for hygro-chemo-mechanical damage of concrete

The paper proposes an analytical model for calcium leaching of concrete due to water. The model is set in the framework of chemically active saturated porous media. Continuum damage mechanics is used in order to develop a phenomenological poroplastic model of concrete. Two forms of damaging processes are included: mechanical, modelled with two scalar damage internal variables; chemical, related...

Damage Evolution of Concrete Exposed to Sulfate Attack Under Drying- Wetting Cycles

The damage evolution of concrete subjected to drying-wetting cycles in different concentration of sodium sulfate solution was investigated based on micro and macro-observations. Through the experiment, weight loss, compressive strength loss and the damage layer thickness of concrete were measured after different drying-wetting cycles. The mechanical properties degradation in the damage layer of...

A Coupled Chemo-Elastoplastic- Damage Constitutive Model for Plain Concrete Subjected to High Temperature

A coupled elastoplastic-damage constitutive model taking into account chemo-induced elastoplastic-damage effects for the modeling of coupled chemothermo-hygro-mechanical behavior of concretes at high temperature is proposed in this article. A three-step operator split algorithm for the integration of the rate coupled constitutive equations is developed. Consistent tangent modulus matrices for c...

Chemo Mechanical Caries Removal - A New Horizon

In this era of minimal intervention dentistry, the changing concept of cavity preparation and the introduction of reliable adhesive materials have lead to the development of alternative methods of caries removal. Chemo mechanical caries removal (CMCR) involves the chemical softening of the carious dentine, followed by its removal with gentle excavation. This process removes only the infected ti...

Damage Detection of Carbon Fiber-reinforced Concrete Under Bending Test