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Generating new knowledge on ecological and economical cementitious materials with limestone addition and high performances
PERFORM-MAT-CIM

Contract No: 134/2006
Project Manager:
dr.eng. Cristina Dumitrtescu;
E-mail: cristina.dumitrescu@ceprocim.ro
tel:0213188893

1.1. Client – The Politehnica Management Agency of Scientific Research, Innovation and Technology Transfer, Bucharest, Programme RELANSIN

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1.2. Project Coordinator – SC. CEPROCIM SA.

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Commercial reg. no: J40/250/1991; Unic registering code: R 449620;
CIF: RO 449620;  Subscribed and payed-up capital: 1805617,50 lei

ROMANIA, 6 Bucharest, # 6 blvd. Preciziei, code 062203
phone: +(4021) 318 88 84; 318 88 90; 318 88 93.
fax: +(4021) 318 88 76; 318 88 94.
https://www.ceprocim.ro
e-mail: office@ceprocim.ro; res@ceprocim.ro

1.3. Partners

Partener 1 – UPB – Bucuresti

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MINISTERUL EDUCATIEI SI CERCETARII
UNIVERSITATEA POLITEHNICA BUCURESTI
Splaiul Independentei nr. 313, sector 6, Bucuresti, cod 060042 Tel. 3181000, Fax. 3181001

 

Partner 2 – The Ovidius University of Constanta

Text Box:

UNIVERSITATEA “OVIDIUS” CONSTANTA Facultatea de Fizica, Chimie si Tehnologia Petrolului
B-dul Mamaia 124 RO-900527 Constanta ROMANIA Tel: 40-0241 -614576, Fax 40-0241 -616194


Partner 3 – IMT – Bucharest


Partner 4 – INCERC, Bucharest

 

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Partner 5 – ICECON, Bucharest – RESEARCH INSTITUTE FOR CONSTRUCTION EQUIPMENT AND TECHNOLOGY

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Partner 6 – Fundatia “Serban Solacolu” – Bucuresti

Text Box: 2

FUNDATIA PENTRU STIINTA SI INGINERIA
MATERIALELOR  – “SERBAN SOLACOLU”
Str. Gheorghe Polizu, nr. 1, cod 011061, Sector 1, Bucuresti

1.4 Duration:

20th July 2006-15th September 2008

1.5 Description

1.5.1 Scope
The project shall gather a critical mass of high-ranking human resources from universities, research institutes and SMEs to create a scientific research consortium. The final goal of the project is to accumulate knowledge in the field of cementitious materials with addition of calcareous components. The cementitious materials will feature high performances and will bring ecological and economical benefits. They will be enhanced chemically, structurally, mineralogically and in terms of particle size by shifting the particle size range from the present domain to the submicron range by means of employing a calcareous addition.

1.5.2 Summary
The purpose of the project is to concentrate a critical mass of valuable materials and high-ranking human resources from universities, institutes, and SMEs within a consortium to unfold joint research so as to generate new knowledge in the field of ecological, economical and high performance cementitious materials with limestone addition.
The final result is obtainment of silicate cementitious materials optimised in terms of chemistry, structure, mineralogy, and particle size distribution by lowering the particle size spectrum to the sub-micron range by means of limestone addition.

Limestone addition to a cementitious material brings the following advantages:

a) In terms of quality optimisation of the cementitious material:
– It complements the particle size distribution of a cementitious material in deficit of fine particles.
– It decreases the content in capillary pores (voids between particles) of the hardened material.
– It interacts with the material in the hydration process and accelerates the hydration of the tricalcium silicate C3S.
– It modifies the arheological parameters of the cement paste.
– It reduces the distances between cement grains.

The final result of the project, consisting of 1-2 high performance silicate cementitious materials with limestone addition.

b) Energy savings. Replacing up to 35% clinker with limestone leads to a reduction in the energy consumption in burning by about 25 KWh/tone of product.

c) Abating CO2 emissions by about 220 Kg CO2 /tone of product by means of replacing up to 35% of the cement clinker

d) Higher levels of cement clinker replacement are in itself a solution for natural energy preservation.

e) Cementitious materials including limestone that are developed at optimal parameters may be used in concrete in all exposure conditions, as stated in the European standard for concrete and mortars

1.5.3. Objectives
The project PERFORM-MAT-CIM aims at jointly unfolding with the partners in the consortium of highly complex research & technological development activities involving both basic and applied research. Jointly fulfilling of the proposed activities will lead to developing long term partnerships between the participating institutions, with the aim of developing strong material bases for scientific research.

Implementing a science & technology cluster (A private project would be a better solution.) to facilitate development of industrial applications of the obtained scientific results. Proposal of a project which may qualify for the same thematic field within FP7.

1.5.4 Envisaged results

  • Documentary study regarding the effects of the limestone addition on the physical and chemical process of hardening of the cementitious materials by hydration-hydrolysis processes
  • Results regarding the effects of the limestone addition on the hydration-hardening process: the hydration kinetics, the microstructure of the hardened cementitious paste, the water demand, shrinkage, porosity, strength, etc.
  • Correlations between the physical and chemical characteristics of the limestone addition and the rheology of the cementitious pastes, the microstructure characteristics of the hardened paste, the phase composition and the physical and mechanical properties of the hardened paste
  • Formulations for obtaining high performance binders with limestone addition
  • Methods for processing the cementitious materials with limestone addition
  • Obtained results at placing the cementitious materials with limestone addition and high performances
  • Establishing the exposure classes of the concrete obtained using cementitious materials with limestone addition and, therefore, the corresponding fields of application.

1.6. Staff involved in the Project

  • Scientific Researchers, Grade 1: Two individuals
  • Scientific Researchers, Grade 2: Four individuals
  • Scientific Researchers, Grade 3: Seven individuals
  • Scientific Researchers: Nine individuals
  • Engineers: Five individuals
  • Twenty titles of doctor in total

Stages

Results

Stage 1

Documentary study regarding cementitious materials with limestone addition. New ways to optimise the hydration-hardening mechanism

– Database regarding cementitious materials with limestone addition
– Database regarding the hydration and hardening of cementitious materials with
limestone addition and high performances
– Database regarding the behaviour at placing (mortars and concrete) of cementitious materials with high performances. Fields of application
Stage 2

Thorough investigation regarding identifying the influencing factors on the quality of the cementitious material with limestone addition. Establishing formulations and process technology parameters

– Establishing the type of clinker and
limestone addition
– Analysis of the oxide and mineralogical
composition of the components
– Development of the cementitious materials with limestone addition by intergrinding or separate grinding of the components
– Characterisation of the cementitious
materials with limestone addition and establishing the effect of the limestone
addition on the physical, chemical and
mechanical properties of the laboratory obtained cementitious materials
Stage 3

Thorough investigation regarding the hydration and hardening of pastes of cementitious materials with limestone addition

– Investigation and establishing the effect of the limestone addition on of the hydration and hardening of the pastes of cementitious material
– Optimal formulations in terms of
composition and processing technique of cementitious materials with limestone addition
Stage 4

Thorough investigation regarding the micro- and nanostructure correlation and the technical properties of the cementitious materials with limestone addition and high performances.
Development and characterisation of two cementitious materials with limestone addition and high performances

– The correlations between the micro- and
nanostructure and the properties of the
cementitious materials. Formulations for
two types of cementitious material
– Development and characterization of cementitious materials with high performance
Stage 5

Thorough investigations regarding the behaviour at placing of the cementitious materials with addition of limestone and high performances

– Characterisation of the masonry mortars and mortars for rendering based on cementitious materials with addition of limestone
– Characterisation of concrete on the basis of the cementitious materials with addition of limestone
– Establishing the effect of the limestone
addition on the placing behaviour of the
obtained cementitious materials with high
performances
Stage 6

Dissemination and publication of the obtained results

– Website
– A training course
– Round-table discussions

 

 

 

 

 

 

 

 

 

 

 

  • Consideration about limestone addition on the Portland cement properties
    – “ZILELE ACADEMICE TIMISENE” editia a X-a, Timisoara, ROMANIA 24 – 25 mai 2007
  • Ecologically and economically performance hydraulic binder
    – The 5th International Conference “New Research Trends in Material Science” – ARM-5, Sibiu, ROMANIA, 5 – 7 septembrie, 2007
  • Ecologically and economically performance hydraulic binder
    – The International – Conference Structural Analysis of Advanced Materials – ICSAM 2007, Patras, Greece, 2 – 6 septembrie, 2007
  • Multifunction hydraulic binder based on Portland cement
    – Nanostructured Multifunctional Materials – NMM07 – Sinaia, ROMANIA 18 – 20 octombrie 2007
  • Ecologically and economically high performance hydraulic binder
    – Romanian Journal of Materials nr 4/2007, p. 291
  • The effect of limestone addition on the hydration and hardening of Portland limestone cement in correlation with its physical and mechanical properties
  • – Romanian Journal of Materials nr. 3/2008, p. 203

  • Round-table : “Performance cementitious materials”
  • Training course: “Cementitious materials with addition of limestone”