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Decarbonization potential of steel fibre-reinforced limestone calcined clay cement concrete one-way slabs

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Characterization of interfacial transition zone in concrete prepared with carbonated modeled recycled concrete aggregates

Karen Scrivener

Treatment by accelerated carbonation has been widely studied to enhance the quality of recycled concrete aggregates (RCA) and hence the performance of new concrete produced with the RCA. This is often ascribed to the densification of RCA. This study invest ...

PERGAMON-ELSEVIER SCIENCE LTD2020

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The significance of sustained loading on the compressive and tensile strength of concrete has been experimentally verified since the 1950s and is currently acknowledged in most design codes implicitly or explicitly. However; its influence on other potentia ...

AMER CONCRETE INST2020

Prediction of autogenous shrinkage of cement pastes as poro-visco-elastic deformation

Karen Scrivener, Zhangli Hu, Pietro Lura

Precise and robust predictions of autogenous shrinkage of high performance concrete are essential to limit self-induced stresses and cracking in modern concrete structures. This paper presents predictions of autogenous shrinkage for three cement pastes of ...

PERGAMON-ELSEVIER SCIENCE LTD2019

Concrete Performance of Limestone Calcined Clay Cement (LC3) Compared with Conventional Cements

Karen Scrivener, Lionel Sofia, François Henri Avet

This study aims to demonstrate the robustness of concrete made of limestone calcined clay cement (LC3). Two campaigns were carried out using 375 kg.m(-3) and 500 kg.m(-3) of binder and targeting plastic and self-placing workability, respectively. The concr ...

AMER SOC TESTING MATERIALS2019

Time-dependent strength of concrete in compression and shear

Darko Tasevski

Sustained load actions are permanently present in concrete structures, as for example self-weight and dead loads on bridges or soil pressure on cut-and-cover tunnels. These actions may increase throughout a structure's lifetime, for instance after refurbis ...

EPFL2019

Life Cycle Analysis of Strengthening Existing RC Structures with R-PE-UHPFRC

Emmanuel Denarié, Guillaume Habert, Amir Hajiesmaeili

(PE)-UHPFRC, a novel strain hardening ultra high-performance fiber reinforced concrete (UHPFRC) with low clinker content, using Ultra-High MolecularWeight Polyethylene (UHMW-PE) fibers, was developed for structural applications of rehabilitation. A compreh ...

2019

Carbonation of low carbon binders

Wioletta Soja

To reduce the impact of the embodied energy and of the carbon dioxide emissions of concrete, the use of supplementary cementitious materials (SCMs) in the cement industry has become a common practice. However, the practical experience on such cements is li ...

EPFL2019

UHPFRC for the cast-in place reinforcement of offshore maritime signalization structures

Emmanuel Denarié

Offshore lighthouses are a remarkable historical heritage often over 100 years old. The management of their aging is a challenge. The extremely low permeability of Ultra-High- Performance Fiber Reinforced Concretes (UHPFRC), combined with their outstanding ...

UNIV POLITECNICA VALENCIA2018

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A large number of design approaches for structural concrete rely on the applicability of limit analysis. This is for instance the case of bending and shear design in members with transverse reinforcement, where it is assumed that plastic compression fields ...

2017

The Search for Affordable Cement and Concrete in the 18th and 19th Century

Salvatore Aprea

At the turn of the 19th century, the production and use of concrete were limited by the unavailability of raw materials to produce good cement in several places. From that time onwards, the progress of chemistry and a number of empirical discoveries opened ...

Springer2017