Topic
Mortar
About: Mortar is a research topic. Over the lifetime, 25024 publications have been published within this topic receiving 218739 citations.
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TL;DR: A multiscale mortar multipoint flux mixed finite element method for second order elliptic problems that derives optimal order convergence on the fine scale for both the multiscales pressure and velocity, as well as the coarse scale mortar pressure.
Abstract: In this paper, we develop a multiscale mortar multipoint flux mixed finite element method for second order elliptic problems. The equations in the coarse elements (or subdomains) are discretized on a fine grid scale by a multipoint flux mixed finite element method that reduces to cell-centered finite differences on irregular grids. The subdomain grids do not have to match across the interfaces. Continuity of flux between coarse elements is imposed via a mortar finite element space on a coarse grid scale. With an appropriate choice of polynomial degree of the mortar space, we derive optimal order convergence on the fine scale for both the multiscale pressure and velocity, as well as the coarse scale mortar pressure. Some superconvergence results are also derived. The algebraic system is reduced via a non-overlapping domain decomposition to a coarse scale mortar interface problem that is solved using a multiscale flux basis. Numerical experiments are presented to confirm the theory and illustrate the efficiency and flexibility of the method.
78 citations
TL;DR: In this article, the fresh state properties of aerial lime pastes and aerial lime based mortars were investigated and the torque variation with time and the mortar rheological parameters (relative yield stress and plastic viscosity) were obtained using a rheometer suitable for mortars.
78 citations
TL;DR: In this article, the 3D Richard's equation was used to simulate the capillary water entrance in uncracked and cracked mortar by solving the Finite Element Method, and realistic boundary conditions were imposed by considering the water evaporation process.
78 citations
TL;DR: In this article, three materials are considered in four different ways for strengthening URM walls, textile reinforced mortars (TRM) plastering, applied on one and both faces of the wall, polypropylene fiber reinforced mortar plastering (PP-FRM), and ferrocement reinforced mortar plating.
78 citations
TL;DR: In this article, a research program was conducted at Leeds University to investigate the properties of cementitious, polymer and polymer modified (PMC) repair mortars with respect to the compatibility of these materials with concrete.
Abstract: Strengthening, maintenance and repair of concrete structures are becoming more recognised in the field of civil engineering. There is a wide range of repair mortars with varying properties, available in the market and promoted by the suppliers, which makes the selection of the most suitable one often difficult. A research programme was conducted at Leeds University to investigate the properties of cementitious, polymer and polymer modified (PMC) repair mortars. Following an earlier publication on the intrinsic properties of the materials, this paper presents results on the compatibility of these materials with concrete. The dimensional stability is used in this study to investigate the compatibility of the repair mortars and the parent concrete. Composite cylindrical specimens (half repair mortar/half concrete) were prepared and used for the measurements of modulus of elasticity and shrinkage. The results of the different combined systems were obtained and compared to those calculated using a composite model. The variations between the measured and calculated values were less than 10%. The paper attempts to quantify the effect of indirect differential shrinkage on the permeability and diffusion characteristics of the different combined systems.
78 citations