Multiscale modeling for cement-based materials, such as concrete, is a relatively young subject, but there are already a number of different approaches to study different aspects of these classical materials. In this paper, the parameter-passing multiscale modeling scheme is established and applied to address the multiscale modeling problem for the integrated system of cement paste, mortar, and...

in this paper the response modification factor due to ductility and saved strength of cylindrical concrete elevated and ground tanks is obtained using finite element method and nonlinear push over analysis considering the lateral effective modes of tanks. to modeling the behavior of the tank materials, the five parameters william-warnke and prefect elastoplastic models are used for concrete and...

Microcapsules with response to chemicals have a variety of potential applications, for example, embedding chloridiontriggered microcapsule containing repairing agent or corrosion inhibitor in steel reinforced concrete is considered to be an effective measures to protect marine construction against chloride attack. In this paper, a chloridionsensitive microcapsule was designed and synthesized ba...

In recent years, the Lamb wave analysis by the multi-channel analysis of surface waves (MASW) for concrete structures has been an effective nondestructive evaluation, such as the condition assessment and dimension identification by the elastic wave velocities and their reflections from boundaries. This study proposes an effective Lamb wave analysis by the practical application of MASW to concre...

We analyze the concrete security provided by a signature scheme described in a recent Internet Draft by McGrew and Curcio.

The fracture of microcapsules is an important issue to release the healing agent for cracks in encapsulation-based self-healing concrete. capsular clustering generated from concrete mixing process considered one critical factors mechanism. Since there a lack studies literature regarding this issue, design cannot be made without appropriate modelling strategy. In paper, effects microcapsule size...

Concrete is frequently utilized infra-structural construction material all over the world. Cement main part of concrete, during its manufacturing emission gases such as carbon dioxide (CO2) from cement factories create greenhouse effect. In these days various natural pozzolanic materials are used partial replacement to enhance strength and durability reduction in consumption consequently emissi...

The morphology of gastropod shells provides a record of the growth rate at the aperture of the shell, and molecular biological studies have shown that the growth rate gradient along the aperture of a gastropod shell can be closely related to gene expression at the aperture. Here, we develop a novel method for deriving microscopic growth rates from the macroscopic shapes of gastropod shells. The...

–– This paper presents an Artificial Neural Networks (ANN) model for the cost optimization of simply supported beams designed according to the requirements of the ACI 318-08 code. The model formulation includes the cost of concrete, the cost of reinforcement and the cost of formwork. A simply supported beam was designed adopting variable cross sections, in order to demonstrate the model capabil...

In the theory of abstract interpretation, a domain is complete when abstract computations are as precise as concrete computations. In addition to the standard notion of completeness, we introduce the concept of observational completeness. A domain is observationally complete for an observable π when abstract computations are as precise as concrete computations, if we only look at properties in ...