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Studies On Shear Bond Strength Masonry Compressive Strength Relationship And Finite Element Model For Prediction Of Masonry Compressive Strength
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Book Synopsis Studies On Shear Bond Strength - Masonry Compressive Strength Relationship And Finite Element Model For Prediction Of Masonry Compressive Strength by :
Download or read book Studies On Shear Bond Strength - Masonry Compressive Strength Relationship And Finite Element Model For Prediction Of Masonry Compressive Strength written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Masonry is a layered composite consisting of mortar and the masonry unit. Perfect bond between the masonry unit and the mortar is essential for the masonry to perform as one single entity in order to resist the stresses due to various loading conditions. Nature of stresses developed in the masonry unit and the mortar and the failure pattern of masonry subjected to compression greatly depends upon the relative stiffness of the masonry unit and the mortar. The thesis is focused on (a) some issues pertaining to masonry unit - mortar bond strength and its influence on masonry compressive strength, and (b) developing a finite element (FE) model to predict the compressive strength of masonry. Importance of masonry bond strength and masonry behaviour is highlighted in chapter 1. Characteristics of masonry units and mortars used in the investigations are presented in Chapter 2. Two types of soil-cement blocks with widely varying strength and elastic properties and cement-lime mortars of two different proportions were used in the investigations. Results of stress-strain relationships and other characteristics were determined for the blocks as well as for mortars. Block-mortar combinations were selected to have block modulus to mortar modulus ratio of 1.0, ~1.0 and1.0. Different artificial methods of enhancing the shear bond strength of masonry couplets have been discussed in chapter 3. Shear bond strength of the masonry couplets was determined through a modified direct shear box test apparatus. Without altering the block and mortar properties, bond strength values for three block-mortar combinations were generated through experiments. Effect of pre-compression on shear bond strength has also been examined for certain block-mortar combinations. Considering five different bond strength values and three block-mortar combinations, compressive strength and stress-strain characteristics of masonry was obtained through the tests on masonry prisms. A detailed discussion on influe.
Book Synopsis Behavior of Unbounded Post- tensioned Masonry Walls by : Reza Hassanli
Download or read book Behavior of Unbounded Post- tensioned Masonry Walls written by Reza Hassanli and published by Springer. This book was released on 2018-08-07 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on a comprehensive analytical, experimental and numerical study on the flexural response of post-tensioned masonry walls under in-plane loads. It explores an important mechanism in this new generation of structural walls, called “Self-centering”. This mechanism can reduce residual drifts and structural damage during earthquake ground motion, and is particularly favorable for structures which are designed for immediate occupancy performance levels. The book reports on the development and verification of a finite element model of post-tensioned masonry walls. It describes a detailed parametric study to predict the strength of post-tensioned masonry walls. New design methodologies and expressions are developed to predict the flexural strength and force-displacement response of post-tensioned masonry. Experimental study is carried out to better understand the behavior of post-tensioned masonry walls and also to evaluate the accuracy of the proposed design procedure and expressions. The book also includes an introduction to current research on unbounded post-tensioned masonry walls, together with an extensive analysis of previously published test results.
Book Synopsis Compressed Earth Block & Rammed Earth Structures by : B. V. Venkatarama Reddy
Download or read book Compressed Earth Block & Rammed Earth Structures written by B. V. Venkatarama Reddy and published by Springer Nature. This book was released on 2022-02-11 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on low carbon construction materials such as stabilised compressed earth blocks (CEB’s) and rammed earth (RE). The content has been divided into four broad themes which includes an introduction to earth construction & stabilised earth, stabilised compressed earth blocks and masonry, stabilised rammed earth, and energy, carbon emissions, sustainability and case studies. It provides basic introduction to earthen materials and earthen structures, particularly with reference to the contemporary work on stabilised earth products for structural applications in buildings. The illustrations in the form of graphs, tables and photographs help the reader to get a grip over the CEB and RE construction. The book illustrates many case studies and examples of CEB and RE buildings. The knowledge on structural characteristics of CEB and RE especially with reference to the durability of such earthen products, and the structural design aspects is uniquely dealt. The embodied energy, embodied carbon, and the impact on construction sector touching upon sustainability of buildings is another unique feature of the book. This volume will be a useful guide for the research community, teachers, engineers, architects, building professionals, practicing engineers, students and individuals aspiring to build low carbon and sustainable buildings.
Download or read book Structural Masonry written by Rots and published by CRC Press. This book was released on 1997-01-01 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides a basis for a standardized approach to structural masonry, using an integration of experimental and computational techniques. Accurate displacement-controlled materials experiments have produced an extensive database of strength, stiffness and softening properties for tension, compression and shear, and this data has been transferred into numerical models for simulating the deformational behaviour of masonry structures. The models have been implemented into finite and distinct element codes and have subsequently been verified against shear wall experiments and analytical solutions for masonry parts.
Book Synopsis Modern Earth Buildings by : Matthew R Hall
Download or read book Modern Earth Buildings written by Matthew R Hall and published by Elsevier. This book was released on 2012-07-11 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: The construction of earth buildings has been taking place worldwide for centuries. With the improved energy efficiency, high level of structural integrity and aesthetically pleasing finishes achieved in modern earth construction, it is now one of the leading choices for sustainable, low-energy building. Modern earth buildings provides an essential exploration of the materials and techniques key to the design, development and construction of such buildings. Beginning with an overview of modern earth building, part one provides an introduction to design and construction issues including insulation, occupant comfort and building codes. Part two goes on to investigate materials for earth buildings, before building technologies are explored in part three including construction techniques for earth buildings. Modern earth structural engineering is the focus of part four, including the creation of earth masonry structures, use of structural steel elements and design of natural disaster-resistant earth buildings. Finally, part five of Modern earth buildings explores the application of modern earth construction through international case studies. With its distinguished editors and international team of expert contributors, Modern earth buildings is a key reference work for all low-impact building engineers, architects and designers, along with academics in this field. Provides an essential exploration of the materials and techniques key to the design, development and construction of modern earth buildings Comprehensively discusses design and construction issues, materials for earth buildings, construction techniques and modern earth structural engineering, among other topics Examines the application of modern earth construction through international case studies
Book Synopsis Masonry Research for Limit-states Design by :
Download or read book Masonry Research for Limit-states Design written by and published by . This book was released on 1994 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The U.S.-TCCMAR Full-scale Five-story Masonry Research Building Test by :
Download or read book The U.S.-TCCMAR Full-scale Five-story Masonry Research Building Test written by and published by . This book was released on 1994 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Performance of Masonry Walls Under Compression and Flexure by : S. G. Fattal
Download or read book Structural Performance of Masonry Walls Under Compression and Flexure written by S. G. Fattal and published by . This book was released on 1976 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The International Journal of Masonry Construction by :
Download or read book The International Journal of Masonry Construction written by and published by . This book was released on 1980 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Derivation of the Properties of Masonry Through Micro-modeling Techniques by : Anastasios Drougas
Download or read book Derivation of the Properties of Masonry Through Micro-modeling Techniques written by Anastasios Drougas and published by . This book was released on 2015 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this thesis is to present a framework for the application of micro-modeling techniques for the analysis of unreinforced masonry structures. Finite element analyses of case studies from the literature are carried out in order to establish their capacity to predict the compressive strength of masonry. A critical review of the experimental inventory is carried out in parallel. An experimental campaign involving masonry materials common in historical structures is presented. A parametric study on the modeling technique and the influence of material properties is also performed based on the finite element framework already presented. A series of shear wall experiments are simulated using finite element models. The shear tests have been performed under a wide range of vertical prestress levels. The influence of the modeling technique is again investigated. A micro-mechanical model for the analysis of masonry periodic unit cells is developed and presented, based on a critical analysis of the results of the preceding finite element analyses. The model may be used for the derivation of the linear and nonlinear elastic properties of masonry walls ans pillars of a wide variety of typologies. The results of the model are compared against experimental results, finite element analysis benchmarks and closed form expressions. The model also forms the basis for the development of a closed formexpression for the prediction of the compressive strength of masonry. A complex masonry pillar is tested in compression. Its constituent materials are extensively characterized for the determination of their mechanical properties. The pillar test is simulated using a finite element micro-model for the purpose of highlighting the effect of the properties of its materials on its structural response. An analytical model for the prediction of the compressive strength of multi-leaf masonry is also proposed.
Book Synopsis Mechanics of Masonry Structures by : Maurizio Angelillo
Download or read book Mechanics of Masonry Structures written by Maurizio Angelillo and published by Springer Science & Business Media. This book was released on 2014-03-20 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experience of people working with different perspectives in different fields of masonry modeling, from mathematics to applied engineering and practice, is brought together in this book. It presents both the theoretical background and an overview of the state-of-the-art in static and dynamic masonry modeling.
Download or read book Masonry written by Brian Trimble and published by ASTM International. This book was released on 2008 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers from a June 2006 symposium report on recent work in cement, lime, mortars for unit masonry, and manutactured masonry units. Some specific topics covered include investigation and repair of glazed brick cladding, the benefits and problems of ASTM C 1324 for analyzing hardened masonry mortars, time-of-cooling effects on mortar joint color, and the selection and use of natural and manufactured stone adhered veneer. Other subjects examined include defection criteria for masonry beams, the effect of void area on brick masonry performance, seismic evaluation of low-rise reinforced masonry buildings with flexible diaphragms, and greening of mortars. B&w photos and illustrations are included. Trimble is affiliated with the Brick Industry Association. Brisch is affiliated with Rockwell Lime Company. There is no subject index.
Download or read book Masonry written by Diane Throop and published by ASTM International. This book was released on 2002 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 19 papers cover mortars, units, assemblies, and the potential of the industry in the near future. The topics include investigating the rheology and microstructure of hydrated lime and sand for mortars, predicting the freeze-thaw durability of bricks using an index based on residual expansion, a
Book Synopsis Effect of Mortar Properties on Strength of Masonry by : Cyrus Charles Fishburn
Download or read book Effect of Mortar Properties on Strength of Masonry written by Cyrus Charles Fishburn and published by . This book was released on 1961 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physical properties of mortars, the bond strength of the mortars to masonry units, and the structural strength of concrete masonry and composite masonry walls containing the mortars are discussed and compared. All of the mortars were tempered to as wet a consistency as could be conveniently handled by the mason. The compressive strength of the walls increased, in general, with the compressive strength of the mortar. The racking and flexural strengths of the walls increased with the bond strength of the mortar. The strength of bond test specimens tended to increase with the compressive strength of the wet consistency mortars that were used. However, bond strength appeared to be the dominant factor affecting the racking and flexural strength of the walls. Increase in both bond strength and wall strength with compressive strength of the mortar was not proportional to the relative compressive strengths of the type N and type S mortars. The stiffness of walls subjected to compressive and flexural loads increased with the bond and compressive strength of the mortars. However, the stiffness of walls subjected to flexural loads appeared to be more dependent upon the number of bed joints in the tensile face and on their extension in bond than upon the bending strains in the masonry materials.
Book Synopsis Masonry Constructions: Mechanical Models and Numerical Applications by : Massimiliano Lucchesi
Download or read book Masonry Constructions: Mechanical Models and Numerical Applications written by Massimiliano Lucchesi and published by Springer Science & Business Media. This book was released on 2008-05-13 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many historically and artistically important masonry buildings of the world’s architecturalheritageareindireneedofmaintenanceandrestoration.Inorder tooptimizesuchoperationsintermsofcost-e?ectiveness,architecturalimpact andstatice?ectiveness,accuratemodelsofthestructuralbehaviorofmasonry constructions are invaluable. The ultimate aim of such modeling is to obtain important information, such as the stress ?eld, and to estimate the extent of cracking and its evolution when the structure is subjected to variations in both boundary and loading conditions. Although masonry has been used in building for centuries, it is only - centlythatconstitutivemodelsandcalculationtechniqueshavebeenavailable that enable realistic description of the static behavior of structures made of this heterogeneous material whose response to tension is fundamentally d- ferent from that to compression. Important insights on the mechanical behavior of masonry arches and vaults come from as far back as Leonardo [10], Hooke [58], Poleni [92] and many other authors (see [47], [9] and [10] for detailed references). Castigliano, in his famous paper on the Mosca bridge [23], and Signorini, in his studies on masonry beams [97], [98], showed both the possibility and necessity of taking into account the weak tensile strength of masonry material.
Book Synopsis Compressive Behaviour of C-Shaped Confined Masonry Boundary Elements by : Ala' Taleb Mufleh Obaidat
Download or read book Compressive Behaviour of C-Shaped Confined Masonry Boundary Elements written by Ala' Taleb Mufleh Obaidat and published by . This book was released on 2017 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced masonry (RM) shear walls are commonly used in mid- and high-rise masonry buildings as the main lateral load resisting system. The seismic performance of RM shear walls can be enhanced by integrating reinforced boundary elements at the wall most stressed zone (i.e. wall ends). Evaluating the compression behaviour of the boundary elements is key for predicting the seismic response of the RM shear walls. Unlike reinforced concrete (RC), the experimental studies that focused on compressive stress-strain behaviour of reinforced masonry are scarce.This study quantifies the stress-strain relationship of sixteen C-shape full-scale and fifty four C-shape half-scale fully grouted unreinforced and reinforced masonry boundary element (RMBE) specimens tested under concentric compression loading up to failure. The effect of changing hoop spacing, vertical reinforcement ratio, the strength of grout, and aspect ratio (height to thickness) on the axial compressive stress-strain behaviour of RMBE is investigated. Enhancement in both peak and post peak stress-strain behaviour were observed by decreasing the hoop spacing, increasing the grout strength, decreasing the aspect ratio, and increasing the vertical reinforcement ratio. Out of the studied parameters, the hoop spacing had the most noticeable effect on the stress-strain relationship.Finite element modelling (FEM) numerical simulations are employed to simulate the compression behaviour of the full-scale RMBE. The proposed FEM procedure provides good prediction of the compression stress-strain behaviour of RMBEs and captures the influence of the confinement reinforcement ratio on the RMBE response. In addition, this study investigates the capability of three existing stress-strain models in predicting the RMBE stress-strain relationship. The considered models overestimated the enhancement in the RMBE stress and significantly overestimated the enhancement in the RMBE strain. Finally, an analytical compressive stress-strain model capable of predicting the RMBE compressive response considering various confinement effects is proposed. The proposed empirical stress-strain model is capable of capturing the overall compressive stress-strain behaviour where a good agreement with the test results was achieved. This model can be implemented in different design and assessment frameworks aiming at better prediction of the seismic response of RM walls with boundary elements.
Book Synopsis New Analysis Techniques for Structural Masonry by : Subhash C. Anand
Download or read book New Analysis Techniques for Structural Masonry written by Subhash C. Anand and published by . This book was released on 1985 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a session of Structures Congress '85, held in Chicago, Illinois, September 16-18, 1985. Sponsored by the Structural Engineering Division of ASCE. This collection contains seven paper on analysis of structural masonry. Various aspects of masonry analysis are covered. Topics include: linear and nonlinear finite element modeling, as well as progressive failure of masonry subjected to in-plane loads where failure may occur only in joints or may involve both bricks and joints; a macroscopic finite element model for masonry (without individual modeling of joints and bricks or blocks) which can handle in-plane and out-of-plane loading including both transverse shear effects and nonlinearity due to cracking; cavity masonry walls subjected to out-of-plane loads; a general failure criterion for the biaxial compressive strength of masonry as well as a design method based on the ultimate strength of masonry walls; reduction in the buckling lengths and corresponding increase in the load carrying capacity of masonry walls due to restraining effects of floor slabs; wall/floor-slab interaction in brick walls that yields load eccentricities and possible capacity reductions; and a 2D-finite element model that can account for shear transfer across wythes in a composite masonry wall.
