Download or read book Brittle Matrix Composites 9 written by A M Brandt and published by Elsevier. This book was released on 2009-11-30 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subjects of the symposia are on composite materials with matrices behaving as brittle in normal or special conditions. Brittle matrix composites are applied in various domains (civil engineering, mechanical equipment and machinery, vehicles, etc.) and in the last decades their importance is increasing together with their variety. Papers include: aggregate-binder composites (concretes, fibre concretes, rocks); sintered materials (ceramics); high strength composites with brittle matrices. In principle, the general problems of structures made of composite materials are not included in the papers. Various approaches to the material engineering problems are presented in the papers.
Download or read book Brittle Matrix Composites 7 written by A M Brandt and published by Woodhead Publishing. This book was released on 2003-10 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Symposium in Brittle Matrix Composites October 13-15, 2003 covers a wide spectrum of topics including cement based composites, ceramic composites and brittle polymer matrix composites. In the papers various topics and issues are considered such as: analytical and numerical studies related to the design of composites, prediction of behaviour and verification of strength and stability, testing methods, manufacturing processes and repair, environmental effects and durability assessment. The present volume of 55 papers proves that there are still many problems in the field of brittle matrix composites deserving theoretical and experimental investigations and that new solutions to these problems are needed for practical application in civil engineering, industrial structures, machinery and other domains.
Download or read book Brittle Matrix Composites 10 written by A M Brandt and published by Elsevier. This book was released on 2012-11-12 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subjects of the symposia are on composite materials behaving as brittle, normal and special conditions of exploitation. Brittle matrix composites are applied in various domains and the series of symposia are closely related to their applications in civil engineering. In the last decades their importance is increasing along with their variety and the use of most advanced methods of testing. Papers include concretes, fibre concretes and ceramics, particularly their composition, microstructure and fracture processes. Various new and advanced engineering problems are presented in the papers.
Download or read book Brittle Matrix Composites 10 written by Andrzej Marek Brandt and published by . This book was released on 2012 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brittle Matrix Composites written by and published by . This book was released on 1994 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brittle Matrix Composites written by Tatiana V. Lyashenko and published by Elsevier Inc. Chapters. This book was released on 2012-11-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibre reinforced polymer-cement compositions for self-levelling flooring are studied. The individual and combined effects of dispersible polymer powder with properties of binder and superplasticiser, of various methylcelluloses, and of polypropylene fibre on effective viscosity of the mix and mechanical properties of the hardened mortar are evaluated and analysed. Used for analysis are multifactor experimental-statistical models built on the data obtained for 18 mixes (of the same workability) in the designed experiment and describing the fields of rheological model parameters, of strength, and other criteria in composition coordinates. The models have made it possible to simulate material behaviour in computational experiments, to reveal and evaluate the correlations of the properties for different technological conditions, to find individual and compromise optima.
Download or read book Brittle matrix composites 2 written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brittle Matrix Composites 10 written by Andrzej Marek Brandt and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subjects of the symposia are on composite materials behaving as brittle, normal and special conditions of exploitation. Brittle matrix composites are applied in various domains and the series of symposia are closely related to their applications in civil engineering. In the last decades their importance is increasing along with their variety and the use of most advanced methods of testing. Papers include concretes, fibre concretes and ceramics, particularly their composition, microstructure and fracture processes. Various new and advanced engineering problems are presented in the papers.
Download or read book Brittle Matrix Composites written by Vaclav veselý and published by Elsevier Inc. Chapters. This book was released on 2012-11-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper is focused on an estimation of the extent of the fracture process zone and the zone of cumulative damage evolving during tensile failure of structures made of quasi-brittle materials, e.g. cementitious composites. The zone is determined via a developed (semi-)analytical method based on a combination of multi-parameter linear elastic fracture mechanics, cohesive crack models and plasticity theory. Results of the method are verified by numerical simulations of three-point bending of notched beams using an academic computational code based on a discrete spring network (lattice-particle) model and programs based on continuum modelling (finite elements), both with implementation of the cohesive zone approach. Three materials differing in cohesive behaviour are considered in the study; apart from the classical quasi-brittle softening material also a quasi-ductile and a strain hardening ones are taken into account. Used simulation tools provide sound results, particularly in the case of the softening material. Moreover, significant potential of the developed modelling techniques is presented.
Download or read book Brittle Matrix Composites written by Mònica Ardanuy and published by Elsevier Inc. Chapters. This book was released on 2012-11-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the evaluation of the durability to wet-dry cycling exposure of cement composites reinforced with nanofibrillated cellulose comparing the results with composites reinforced with conventional cellulose fibres at the micro-scale level has been performed. For this purpose, cement mortar composites reinforced with cellulose fibres from conventional sisal pulp and cellulose nanofibres prepared by the application of a high intensity refining process have been prepared. The mechanical performance of the composites prepared was tested after 7 days of cure treatment and after 5 wet-dry cycles. The cement mortar composites reinforced with the nanofibrillated cellulose exhibited higher flexural strenght and flexural modulus but lower values of fracture energy than the ones reinforced with the conventional sisal fibres. No significant improvements of the durability were found for the composites prepared with nanofibrillated cellulose.
Download or read book Brittle Matrix Composites written by and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brittle Matrix Composites written by Andrzej M Brandt and published by Springer. This book was released on 2012-01-06 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers contained herein were presented at Euromech 204 'Structure and Crack Propagation in Brittle Matrix Composite Materials' held at Jablonna, Poland, from 12 to 15 November 1985. The Colloquium was organised and sponsored by The Institute of Fundamental Technological Research, Polish Academy of Sciences, under the auspices of the European Mechanics Committee (Euromech). The Euromech Committee is affiliated to the International Union of Theoretical and Applied Mechanics (IUT AM). IUT AM was organised early in the 1920s with the First Congress being held in Delft in 1924. The Euromech Colloquia were initiated some 20 years later with the intention of promoting European co-operation in the Mechanical Engineering Sciences. As the title implies, the Colloquium addressed a variety of problems associated with three main groups of materials, namely: high-strength composites, ceramics and cement-based materials, the common theme in each case being the relative brittleness of the matrix material. The problems considered ranged from fracture processes peculiar to such materials to projected design guidelines which will ensure their safe operation under a variety of conditions. Participants from thirteen countries (Czechoslovakia, France, FRG, GDR, Hungary, Italy, The Netherlands, Norway, Poland, Portugal, Sweden, UK, and USSR) contributed to the success of this event. For ease of reference, the 38 papers presented at the Colloquium have been subdivided into six distinct sections, viz. General Problems and Methods, Cracking in Ceramics, Fracture of Polymer Composites, Crack ing in Cement Based Composites, Fracture of Fibre Reinforced Cements and Fracture Mechanics of Concretes.
Download or read book Brittle Matrix Composites 3 written by Andrzej M Brandt and published by Springer. This book was released on 2013-03-26 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the third volume published in the series of proceedings of international symposia called 'Brittle Matrix Composites' organised every three years in Poland. The first Symposium, denoted as BMC1, was organised in Jablonna near Warsaw in 1985 under the auspices of the European Mechanics Committee (EUROMECH 204). The second (BMC2) took place in Cedzyna near Kielce in 1988; the present (BMC3) is being held in Warsaw in September 1991. The BMC Symposia are intended to cover mechanical problems related to three main groups of composite materials: high-strength composites, ceramics and cement-based materials. The common feature which is a link between these materials is their brittle behaviour. Brittleness has no clear definition, but it is considered as an important potential disadvantage of every material. Brittle fracture creates various situations which may be very dangerous for the safety and serviceability of structures manufactured from composite materials. Also the brittleness of non-structural elements may give rise to disadvan tageous behaviour, e.g. during transportation and montage. There are many structural and technological ways of reducing material brittleness. Their development and further improvement are of primordial importance for most applications of these composite materials. The problems considered in the series of BMC Symposia cover all aspects of brittle matrix composites: • design studies, theoretical considerations, computational methods; • prediction of behaviour, fracture mechanics and other approaches; • testing methods, test results, all types of experimental studies; • manufacturing processes, applications, observations and durability assess ments, environmental effects, etc.
Download or read book Brittle Matrix Composites written by Francisco Montero and published by Elsevier Inc. Chapters. This book was released on 2012-11-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper a model is presented to simulate fracture of fibre reinforced cement based materials. The model is based on a lattice-type fracture model. Fibres are explicitly implemented as separate elements connected to the cement matrix via special interface elements. With the model multiple cracking and ductile global behaviour are simulated of the composite material. Variables in the model are the fibre dimensions and properties, the fibre volume in the composite, the bond behaviour of fibres and matrix and the cement matrix properties. These properties are obtained by testing, which will be described in the paper. The model is used as a design tool for creating fibre cement based composites with any desired mechanical behaviour.
Download or read book Advances in Ceramic Matrix Composites VII written by Narottam P. Bansal and published by John Wiley & Sons. This book was released on 2012-03-28 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains 18 papers from the Ceramic Matrix Composites symposium held during the 103rd Annual Meeting of The American Ceramic Society, April 22—25, 2001, in Indianapolis, Indiana. Chapters include Processing; Mechanical Properties; Corrosion and Environmental Effects; Characterization and Test Methods; Design of CMC Components; and Joining. 258 pages
Download or read book Brittle Matrix Composites 5 written by A. M. Brandt and published by Woodhead Publishing Limited. This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fifth in a successful series of symposia this book contains the papers presented at BMC5 held in Warsaw, Poland in October 1997. The papers review the current status and developments on all aspects of brittle matrix composites associated with four main groups: high strength composites, brittle polymer composites, ceramics and cement based materials.
Download or read book Brittle Matrix Composites written by Dominik Logoń and published by Elsevier Inc. Chapters. This book was released on 2012-11-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main motivation for this work was the attempt to limit the rapid destruction of brittle high performance concrete UPC and, in consequence, to obtain SRCC (safe rope effect cement composite). In the high performance fiber reinforced cement composites HPFRC deflection and flexural strength are increased. The rope effect in HPFRC results in a highly deflected damaged specimen with multicracking effect and with post-peak load at bending exceeding that corresponding to the first crack, which enables to obtain cement composite with the ability to absorb additional energy after the appearance of the macrocrack. The SRCC paste and mortar were presented in the previous paper. This paper shows different effects of the strengthening of cement concrete with dispersed synthetic structural polypropylene fibers 19 and 54mm long. The possibility to control multicracking and the crack propagation process using the rope effect for SRCC composites, which eliminates the catastrophic process of the destruction of composite, was presented and a new possibility of the strengthening effects assessment was suggested.
