High performance concrete with energetically modified cement (EMC)
The demands of the modern building industry require development of new types of binder materials with improved properties for high and ultra high strength concretes and with significantly improved durability. They will provide new potential possibilities for the controlling of high performance concr...
Main Authors: | , , |
---|---|
Format: | Conference Object |
Language: | English |
Published: |
Luleå tekniska universitet, Byggkonstruktion och -produktion
2004
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-27371 |
id |
ftluleatu:oai:DiVA.org:ltu-27371 |
---|---|
record_format |
openpolar |
spelling |
ftluleatu:oai:DiVA.org:ltu-27371 2023-05-15T17:09:14+02:00 High performance concrete with energetically modified cement (EMC) Elfgren, Lennart Jonasson, Jan-Erik Ronin, Vladimir 2004 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-27371 eng eng Luleå tekniska universitet, Byggkonstruktion och -produktion Kassel Structural Materials and Engineering Series Vol 3 Proceedings International Symposium on Ultra-High Performance Concrete : Kassel, 13-15 Sept, 2004, p. 93-102 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-27371 urn:isbn:3-89958-086-9 Local 0ce13600-f1ba-11dd-ae0d-000ea68e967b info:eu-repo/semantics/openAccess Infrastructure Engineering Infrastrukturteknik Conference paper info:eu-repo/semantics/conferenceObject text 2004 ftluleatu 2022-10-25T20:55:08Z The demands of the modern building industry require development of new types of binder materials with improved properties for high and ultra high strength concretes and with significantly improved durability. They will provide new potential possibilities for the controlling of high performance concrete technology. In the Department of Civil Engineering at Luleå University of Technology a study of energetically modified cement (EMC) indicates that it is possible to obtain much more rapid hardening cement than the original cement used. As an example the strength of EMC-concrete increases about 100 per cent at the age of one day compared with a conventional high strength concrete.A new type of the cement gives possibilities to obtain required workability of the concrete mixtures with low water to binder ratios (w/B < 0.24) and achieve the strength levels up to 200 MPa with binder content not exceeding 550 kg/m3. The modification process used in this study means a special mechanochemical treatment in vibrating milling equipment of the blend containing Ordinary Portland Cement (OPC) and silica fume (SF), which increases the surface energy and the chemical reactivity of the newly obtained binder. This results in an accelerating effect, which maintains at least for nine months. According to ongoing investigations the energetically modified cement appears to give a considerable acceleration effect in the whole range of studied temperature. Concretes produced with EMC cement demonstrated very high durability at very severe testing conditions, including drying, saturation in sodium chloride solution and freezing-thawing. These results are very promising and it might be used in a lot of applications as winter concreting, precast element production, special structural elements, repair of buildings, rehabilitation, topping of concrete, floors, roads, etc. Godkänd; 2004; 20090203 (elfgren) Conference Object Luleå Luleå Luleå Luleå University of Technology Publications (DiVA) |
institution |
Open Polar |
collection |
Luleå University of Technology Publications (DiVA) |
op_collection_id |
ftluleatu |
language |
English |
topic |
Infrastructure Engineering Infrastrukturteknik |
spellingShingle |
Infrastructure Engineering Infrastrukturteknik Elfgren, Lennart Jonasson, Jan-Erik Ronin, Vladimir High performance concrete with energetically modified cement (EMC) |
topic_facet |
Infrastructure Engineering Infrastrukturteknik |
description |
The demands of the modern building industry require development of new types of binder materials with improved properties for high and ultra high strength concretes and with significantly improved durability. They will provide new potential possibilities for the controlling of high performance concrete technology. In the Department of Civil Engineering at Luleå University of Technology a study of energetically modified cement (EMC) indicates that it is possible to obtain much more rapid hardening cement than the original cement used. As an example the strength of EMC-concrete increases about 100 per cent at the age of one day compared with a conventional high strength concrete.A new type of the cement gives possibilities to obtain required workability of the concrete mixtures with low water to binder ratios (w/B < 0.24) and achieve the strength levels up to 200 MPa with binder content not exceeding 550 kg/m3. The modification process used in this study means a special mechanochemical treatment in vibrating milling equipment of the blend containing Ordinary Portland Cement (OPC) and silica fume (SF), which increases the surface energy and the chemical reactivity of the newly obtained binder. This results in an accelerating effect, which maintains at least for nine months. According to ongoing investigations the energetically modified cement appears to give a considerable acceleration effect in the whole range of studied temperature. Concretes produced with EMC cement demonstrated very high durability at very severe testing conditions, including drying, saturation in sodium chloride solution and freezing-thawing. These results are very promising and it might be used in a lot of applications as winter concreting, precast element production, special structural elements, repair of buildings, rehabilitation, topping of concrete, floors, roads, etc. Godkänd; 2004; 20090203 (elfgren) |
format |
Conference Object |
author |
Elfgren, Lennart Jonasson, Jan-Erik Ronin, Vladimir |
author_facet |
Elfgren, Lennart Jonasson, Jan-Erik Ronin, Vladimir |
author_sort |
Elfgren, Lennart |
title |
High performance concrete with energetically modified cement (EMC) |
title_short |
High performance concrete with energetically modified cement (EMC) |
title_full |
High performance concrete with energetically modified cement (EMC) |
title_fullStr |
High performance concrete with energetically modified cement (EMC) |
title_full_unstemmed |
High performance concrete with energetically modified cement (EMC) |
title_sort |
high performance concrete with energetically modified cement (emc) |
publisher |
Luleå tekniska universitet, Byggkonstruktion och -produktion |
publishDate |
2004 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-27371 |
genre |
Luleå Luleå Luleå |
genre_facet |
Luleå Luleå Luleå |
op_relation |
Structural Materials and Engineering Series Vol 3 Proceedings International Symposium on Ultra-High Performance Concrete : Kassel, 13-15 Sept, 2004, p. 93-102 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-27371 urn:isbn:3-89958-086-9 Local 0ce13600-f1ba-11dd-ae0d-000ea68e967b |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766065231239315456 |