Arnaud Perrot

Arnaud Perrot
Université Bretagne Sud | UBS · IRDL – Institut de Recherche Dupuy de Lôme

PhD

About

172
Publications
71,680
Reads
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3,535
Citations
Citations since 2016
96 Research Items
3076 Citations
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
Additional affiliations
October 2007 - present
Université Bretagne Sud
September 2007 - December 2016
Université Bretagne Sud
Position
  • Professor (Associate)
Education
September 2003 - December 2006

Publications

Publications (172)
Conference Paper
Full-text available
Cement-based additive manufacturing technologies, also known as 3D concrete printing (3DCP), have been under development for more than a decade and many research organisations in academia and the construction sector are now associated with the development of this technology. The present study reveals the feasibility of employing nanoclay both in po...
Article
Lightweight cementitious composites have a broad range of applications, such as filling or thermal insulation, and should display minimal mechanical properties. Our approach was to prepare mixtures of ordinary Portland cement (OPC) and micro- and nanofibrillated cellulose (CNF) at different water to cement ratios (W/C) to optimize a composite with...
Article
Full-text available
In this paper, to have control over geometry specifications of rectangular bar-shaped layers in a robotic concrete 3D printing process, a real-time vision-based control framework is developed and proposed. The proposed control system is able to set the layer-width by automatically adjusting the velocity of an industrial manipulator during the 3D pr...
Thesis
La conception du béton autoplaçant (BAP) est beaucoup plus complexe que celle du béton ordinaire. Pour la réussir, il faut réaliser davantage d'essais sur du béton frais et un volume important de matériaux est donc nécessaire. La méthode de mortier de béton équivalent (MBE), principalement utilisée en laboratoire, propose une approche qui simplifie...
Chapter
Full-text available
3D concrete printing sparks over the past few years the interest of researchers invested in concrete Digital Fabrication. While many processing issues have already been overcome to a large extent, in-depth understanding of the materials behaviour remains a challenge, especially for high yield stress materials deposited using the so-called infinite...
Chapter
Similar to conventional concrete, the use of supplementary cementitious materials (SCMs) in 3-D printing concrete (3DPC) can be technically and environmentally beneficial. 3DPC consumes larger amount of Portland cement compared to conventional concrete so replacing the cement with SCMs will reduce the carbon footprint of 3DPC. However, it is import...
Article
In the absence of a formwork, printable materials are expected to quickly increase their consistency in order to resist the self-weight of the structure being printed. Resolving this rheological requirement with the printing process is the key to successful printing. It is therefore necessary, from a material design, from a process design and from...
Article
Full-text available
The self-compacting concrete (SCC) mix design is much more complex than that of ordinary concrete. Increased testing on fresh concrete and a substantial volume of materials is consequently needed. The concrete equivalent mortar (CEM) method proposes an approach that simplifies and speeds up the experimental testing programmes. This paper seeks to e...
Article
Download within the next 50 days: https://authors.elsevier.com/a/1ejUz_CxSUKp%7E The presented work addresses particle bed binding by selective cement activation as an additive manufacturing process for the construction industry. Its focus is the fluid intrusion behavior in powder beds since this is of merely importance for the shape accuracy and...
Article
Download this paper within the next 50 days: https://authors.elsevier.com/c/1efyH21ISlG4A ________ This paper focuses on material-process interactions in particle bed binding. After a classification of particle bed binding techniques currently available for cement-based materials, the most important material-process interactions and their underlyin...
Article
Full-text available
Additive manufacturing is rapidly influencing the construction industry and designing good quality concrete for printing our homes remain a challenge. New materials are being tested for its suitability in a concrete mix. The purpose of this study is to investigate the influence of nanoclay (nC) on fresh and rheological properties of 3D printing con...
Chapter
The comprehending of the processes’ physics is a prerequisite for the purposeful design and optimization of digital fabrication systems, as well as their efficient and robust process control. This chapter presents an overview of the underlying physics relevant to an understanding of the processing of cement-based materials during various production...
Chapter
Digital fabrication with cementitious materials is a rapidly growing field of research in which the evolution of strength during the various processes, such as 3D printing, is the key controlling parameter. The strength evolves over multiple orders of magnitude during the process, and thus, it is essential to properly characterize the strength evol...
Chapter
The need for methods for forming concrete has existed for as long as concrete has been used in constructing the built environment. Creating flat, rectilinear formers have traditionally been the cost and time efficient default for the majority of applications. The desire for greater design freedom and the drive to automate construction manufacturing...
Conference Paper
In the current context, the development of new bio-based and local building materials is becoming mandatory. Among them, earthen materials have a strong potential to be used as sustainable structural materials but their variability and their water sensitivity impact their mechanical properties that are difficult to guaranty. Recent developments hav...
Conference Paper
Currently, much consideration is given to earthen building materials regarding their highly sustainable properties. Numerous studies have highlighted their structural ability but their water sensitivity is still limiting a potentially more spread use. To limit this sensitivity several studies have recently brought out the positive effects of bio-st...
Conference Paper
Development of earthen building materials is one of the answers that the construction sector can provide to tackle the accelerated climate change issue. However, these materials present a wide variability, even at the local scale, and their water durability can be difficult to ensure. In order to improve their durability regarding water and avoid i...
Conference Paper
Full-text available
This paper aims to discuss the influence of mix composition of cement mortar on fresh and rheological properties of cement mortar. Two different natural fibres, basalt (BA) and sisal (SL) are selected based on fresh and rheological behaviour for its usability in a cementitious mixture. The workability and rheological behaviour are evaluated by flow...
Article
Full-text available
3D printing, also known as additive manufacturing, is a revolutionary technique, which, recently, has gained a growing interest in the field of civil engineering and construction industry. Despite being of its infancy, 3D concrete printing is believed to reshape the future of construction industry because it has the potential to significantly reduc...
Article
Full-text available
Mix design of cement-based materials for casting and 3D printing process are very different because of their workability requirements. For 3D printing, a compromise has to be found between pumpability and printability in order to raise a structure able to resist under its own weigh. Specifics admixtures can be used to guaranty specific properties a...
Article
This paper compiles selected predictive analytical and numerical tools which can be used to model and understand the mechanisms of importance at different stages during and immediately after extrusion-based 3D printing of cementitious materials. The proposed toolbox covers different aspects of the process including mixing, material transportation,...
Article
This work deals with the valorization of industrial glass waste as supplementary cementitious materials in Ultra High Performance Fiber-Reinforced Concrete (UHPFRC). It aims to take advantage of this type of by-product in order to improve both fresh and hardened performances of conventional cementitious materials. This study concerns the use of gla...
Article
Full-text available
This paper deals with the development of sustainable building earth-based materials. More precisely, it addresses the study of the reinforcement of raw earth with natural fibres originated from Algeria (diss and date palm tree fibres) and their stabilisation with xanthan gum. The aim of this study is the design of extruded earth-based building bloc...
Article
In this paper, the strength of concrete prismatic and cylinders concrete and reinforced with steel and polypropylene fibers are presented. Also, hybrid fibers with crimped steel and polypropylene were used in concrete matrix to study its improvements in strength and durability properties. The steel, polypropylene, and hybrid consisting of polypropy...
Article
During cement hydration, solid, fluid, and total volumes vary as water is consumed by chemical reactions. Those volume variations lead to pore water pressure decrease during the first hours of hydration. The deformations induced by early hydration are quantified in order to understand their consequences on the internal stress state within the harde...
Article
Full-text available
For the selective paste intrusion (SPI) method, thin layers of aggregate are locally bound by cement paste where the structure shall arise. After completion of the printing process, the structure is excavated from the particle-bed and the unbound particles are removed. However, for a sufficient layer bonding and shape accuracy, the rheology of the...
Article
Full-text available
This paper presents testing methods based on the deformation and fracture of fresh cementitious materials only subjected to their own weight. These new methods are dedicated to the study of cementitious materials designed for 3D printing of concrete in order to verify rheological requirements related to the process. The first testing methods consis...
Article
In a slipforming process, concrete is continuously poured and the formwork simultaneously raised so that the older concrete on the bottom supports the fresher on the top after a few hours of hydration. The objective of the present study is to examine the evolution of the concrete/formwork interface at very early age. An experimental device was desi...
Article
Full-text available
Among the multiplicity of construction methods based on digital concrete technologies, the most common one remains the extrusion-based process. Two opposed strategies have been developed in order to print a concrete structure using extrusion: the first one emphasizes the ease-of-pumping of material which is massively accelerated to ensure the stabi...
Article
Full-text available
The 3D printing of concrete has now entered a new era and a transformation of the construction sector is expected to reshape fabrication with concrete. This work focuses on the selective paste intrusion method, which consists of bonding dry particles of aggregate with a cement paste. This innovative technique could lead to the production of very pr...
Article
Full-text available
While raw earth can be used as a structural material, its water sensitivity limits its use in modern construction. Earth has a strong affinity with water. Both water imbibition and water vapour transfer have to be taken into consideration. This affinity can be a positive point to regulate indoor ambience, but it can also negatively affect earth’s m...
Article
Presenting a promising option that could be used to encapsulate nuclear waste material for disposal, supersulfated cement (SSC) is, again, receiving wide attention among research community as a cementitious system that has noteworthy properties. It is also an environmentally friendly cement since it is mainly composed of ground granulated blast fur...
Article
The aim of this study was to investigate the effect of different parameters of the mix composition on the fresh and rheological properties of printable mortar. Metakaolin, limestone filler and fly ash were tested as binders. The water/binder ratio was set as 0.50. Superplasticiser (SP), viscosity-modifying admixture (VMA, nanoclay based) and natura...
Chapter
Full-text available
The prediction of the stability of fresh cementitious materials during 3D printing is required in order to find adequate process parameters such as building rate or time gap between layers. Schematically, the process efficiency depends on a balance between the rate of strengthening of the material and the building rate that increases the self-weigh...
Chapter
3D concrete printing is a promising technology in the construction field. Un-availability of standards/specifications related to certification of 3D printed structures and lack of reinforcement in printed concrete are the major factors behind the under-utilization of such innovative technology. Addition of fibers as reinforcement in the printable m...
Conference Paper
The aim of this paper is to investigate the effect of mix composition such as the percentages of metakaolin (MTK) and fly ash (FA) on the fresh and rheological properties and also the percentage of polypropylene fibres. Several tests were used to determine the rheological properties such as the flow table test, the cylindrical slump test and penetr...
Chapter
Additive manufacturing of concrete and cement based materials is expected to revolutionize how structures are built. 3D printing processes by means of extrusion-deposition have recently been developed at the scale of few meters for houses or structural elements but not yet for several floors. Among the 3D printing processes which have also gained a...
Article
Full-text available
In the last few years, raw earth construction has recovered much consideration due to its low environmental impact, its local character and its recyclability. However, the strength of this material is really fluctuating because of soil's variability and the different methods used in vernacular earth construction. The aim of this study is to identif...
Article
Full-text available
Today, the extrusion-based 3D printing of concrete is a potential breakthrough technology for the construction industry. It is expected that 3D printing will reduce the cost of construction of civil engineering structures (removal of formwork) and lead to a significant reduction in time and improve working environment conditions. Following the use...
Article
For concrete and other cement-based materials, cement hydration induces Le Chatelier contraction. This phenomenon creates negative pore water pressure, which increases the bulk and interfacial granular stresses and affects both the interfacial and bulk rheological behavior of the dense mineral suspension. An original device was developed to assess...
Chapter
Full-text available
Limestone powder is increasingly used as a supplementary cementitious composites in order to reduce the environmental impact of concrete. Limestone powder can simultaneously improve the rheological behaviour of the paste, increases the solid volume fraction and reduces the shrinkage of the concrete. The quality of limestone fillers is quarry-depend...
Conference Paper
Full-text available
Rheology of cement-based materials has been receiving a steadily growing interest. Seen the complexity of the material, several custom-made tools have been developed to assess rheological properties of these materials. However, different concrete rheometers can deliver different results, as demonstrated from two testing campaigns held in the early...
Conference Paper
In the last few years, raw earth construction has recovered much consideration due to its low environmental impact, its local character and its recyclability. However the strength of this material is really fluctuating as a consequence of soil’s variability and the different methods that are used in vernacular earth construction. The aim of this st...
Conference Paper
Full-text available
Large amounts of natural materials are used all around the world to stabilize, to protect from water or to enhance mechanical properties of earth-based building materials. Of these materials are; alginate, tannins, oak seed extract, cellulosic glue, natural fibers washing water, casein, linseed oil and citric acid. These additions induce different...
Article
Wood-plastic composites (WPCs) are water-sensitive materials. Standards describe water absorption protocols on composites to obtain results after a long period of aging. From an industrial point of view, it is necessary to obtain the same information (i.e. equilibrium water content and absorption kinetics) over a short time. In this paper, we propo...
Article
Nowadays, the development of renewable marine energies and needs for coastal protection to face global warming issues goes simultaneously with the fast development of digitally based construction methods such as concrete 3D printing. This creates the conditions to change the coastal and off-shore construction methods. Therefore in this study, we as...
Article
This paper reports the effect of mix composition of grout on the fluidity, rheological behaviour and hydro-mechanical behaviour (permeability and compressibility). Factorial design was used in this investigation to assess the combined effects of the four mix composition parameters on fluidity, rheological properties, permeability and compressibilit...
Chapter
This chapter provides an overview of the consequences and impacts of 3D printing on architecture, structural design, society, the economy and the environment. The 3D printing of cement‐based materials provides unprecedented freedom of form for architects and designers of concrete parts. The design of building and construction structures can be done...
Chapter
Full-text available
The various stages of production (particularly layer‐by‐layer extrusion, injection or deposition) may lead to a stratified and/or orthotropic behavior, changing the behavior of a conventional isotropic and monolithic concrete. 3D printing with concrete is different from conventional concrete casting in terms of the processes it uses for mixing and...
Chapter
Full-text available
3D printing is a booming technology that is widely regarded as an industrial revolution. The application of 3D printing and the introduction of digital technologies into the concrete construction sector are the result of the appropriation and repurposing of technology initially developed for other materials, such as resins and plastics. This chapte...
Chapter
3D printing by extrusion/deposition is currently the most widely used process in the field of digital construction. This automated construction process is a complex process that can be broken down into several steps: pumping the material, extruding it and depositing it. For each step of the printing process, the fresh cement‐based materials must ha...
Chapter
This chapter presents an inventory of the additive manufacturing processes using selective binding, and examines the different methods used as well as some of the achievements made. It describes the scientific challenges of obtaining a broader knowledge base with regard to the physical principles involved in the different processes used. The chapte...
Chapter
Full-text available
In a slipforming process, concrete is continuously poured and the formwork simultaneously raised so that the older concrete at the bottom supports the fresher at the top after a few hours of hydration. Such a complex process has to be industrially optimized to ensure the quality surface of concrete. The objective of the present work is to study the...