Lecture

Portland Cement Replacement: Materials and Properties

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

In course

MSE-322: Building materials + Laboratory work

Science des matériaux de construction non métalliques les plus utilisés et plus particulièrement des matériaux cimentaires (béton). Composition chimique, fabrication et comportement sur la durée. ...

Description

This lecture discusses the replacement of portland cement with various materials to improve concrete performance, such as lower heat output and higher mechanical resistance. It covers different types of cements, including slag cement and fly ash cement, as well as the properties of hydraulic materials like blast furnace slag. The lecture also explores the use of pozzolans in concrete, their reactivity, and advantages. It delves into natural pozzolans, such as volcanic ash, and industrial by-products like fly ash and silica fume, highlighting their impact on concrete properties.

Instructors (3)

Karen Scrivener

De nationalité anglaise, Karen Scrivener est née en 1958. Au cours de sa carrière, ses travaux et sa recherche traitaient des domaines suivants: Identification du développement microstucturale pendant l'hydratation du ciment. Elaboration d'une approche multitechnique pour étudier la microstucture des ciments et bétons, avec accent sur la quantification par analyse des images d'électrons retrodiffusés. Caractérisation de l'auréole de transition de la pâte de ciment autour des granulats. Compréhension des processus de dégardation des bétons, en particulier le gonflement lié à la formation de l'éttringite retardée dans les bétons étuvés.

Lionel Sofia

Emmanuelle Anne Boehm Courjault

Teaching & PhD Past EPFL PhD Students as codirector Solène Anne-Lise Albinski Courses Building materials + Laboratory work MSE-322 Materials science of common non metallic building materials, with emphasis on cementitious materials (concrete). Chemical composition, fabrication and behaviour in service Materials MSE-171 Introduction course of material science applied to usual building materials, especially concrete and metals. Description of their fabrication, mechanical and

Official source

Ontological neighbourhood

Chemical engineering

Materials science: Concrete

Related concepts (20)

Energetically modified cement

Energetically modified cements (EMCs) are a class of cements made from pozzolans (e.g. fly ash, volcanic ash, pozzolana), silica sand, blast furnace slag, or Portland cement (or blends of these ingredients). The term "energetically modified" arises by virtue of the mechanochemistry process applied to the raw material, more accurately classified as "high energy ball milling" (HEBM). This causes, amongst others, a thermodynamic transformation in the material to increase its chemical reactivity.

Concrete

Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. When aggregate is mixed with dry Portland cement and water, the mixture forms a fluid slurry that is easily poured and molded into shape.

Cement clinker

Cement clinker is a solid material produced in the manufacture of Portland cement as an intermediary product. Clinker occurs as lumps or nodules, usually to in diameter. It is produced by sintering (fusing together without melting to the point of liquefaction) limestone and aluminosilicate materials such as clay during the cement kiln stage. The Portland clinker essentially consists of four minerals: two calcium silicates, alite (Ca3SiO5) and belite (Ca2SiO4), along with tricalcium aluminate (Ca3Al2O6) and calcium aluminoferrite (Ca2(Al,Fe)2O5).

Slag

Slag is a by-product of smelting (pyrometallurgical) ores and recycled metals. Slag is mainly a mixture of metal oxides and silicon dioxide. Broadly, it can be classified as ferrous (by-products of processing iron and steel), ferroalloy (by-product of ferroalloy production) or non-ferrous/base metals (by-products of recovering non-ferrous materials like copper, nickel, zinc and phosphorus). Within these general categories, slags can be further categorized by their precursor and processing conditions (e.g.

Types of concrete

Concrete is produced in a variety of compositions, finishes and performance characteristics to meet a wide range of needs. Modern concrete mix designs can be complex. The choice of a concrete mix depends on the need of the project both in terms of strength and appearance and in relation to local legislation and building codes. The design begins by determining the requirements of the concrete. These requirements take into consideration the weather conditions that the concrete will be exposed to in service, and the required design strength.

Related lectures (64)

Lowering Environmental Impact: Cement Chemistry and Sustainable Materials MOOC: Cement Chemistry and Sustainable Cementitious Materials

Discusses the use of supplementary cementitious materials to reduce clinker in cement production and lower CO₂ emissions.

Portland Cement Replacement

Covers the replacement of Portland cement with various materials to improve concrete performance and reduce porosity.

Cracking and Sorption MOOC: Sorption and transport in cementitious materials

Explores the formation and impact of microcracks in concrete structures.

Concrete Durability: Mechanisms and Prevention

Explores concrete degradation mechanisms, corrosion prevention, exposure classes, and repair techniques for reinforced concrete structures.

Grinding Cements with Calcined Clays MOOC: Cement Chemistry and Sustainable Cementitious Materials