- Type of paper
: Paper in proceedings
Title: Rapid Setting and Hardening Materials
- Authors:
- Vrbos, Nevenka (43044)
- Matusinović, Tomislav (29886)
Proceedings title: Zbornik 13. jugoslovenskog savjetovanja Nove tehnologije zaštite materijala
Language: hrvatski
Place: Beograd, .
Year: 1991
Pages: from 189 to 200
Meeting: 13. jugoslovensko savjetovanje Nove tehnologije zaštite materijala
Held: from 10/16/91 to 10/17/91
Summary: The research has been carried out to develop rapid setting
andhardening cement materials. The influence of the concentration ofthe
salts and the type of lithium salts on the setting time andthe strengths of
materials have been investigated. Alkalinelithium salts, the salts of week
acids, have been investigated.Alkaline lithium salts, the salts of week
acid, have a linearrelationship of setting time vs. pH with a negative
slope. Themechanical properties of the materials have been investigated.New
material has a special properties, very short setting time,high strengths
at early ages as well as final strengths and verygood stickiness.
- Type of paper
: Paper in proceedings
Title: Rapid Setting and Hardening Cement Materials for repair of
Concrete Construction
- Authors:
- Matusinović, Tomislav (29886)
- Vrbos, Nevenka (43044)
- Čurlin, Danijel
Proceedings title: Industrija nemetala u obnovi i razvoju Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 144 to 150
Meeting: Industrija nemetala u obnovi i razvoju Hrvatske
Held: from 04/23/92 to 04/24/92
Summary: The research has been caried out to develop rapid setting
andhardening cement materials for repair of concrete structures. Theset of
high alumina cement may be considerably influenced byaddition of small
quantities of alkali metal salts. The influenceof concentration of the
salts, chemical nature of anion and thetype of alkali metal cation have
been studied. The measurement offlexural and compressive strength of high
alumina cement and highalumina cement with lithium chlotide have been made.
Along withrapid setting lithium salts causes the strength development
atearly ages. This is important for practical use of rapid settingand
hardening materials.
- Type of paper
: Paper in proceedings
Title: Hydration of High Alumina cement in presents of alkali
salts
- Authors:
- Matusinović, Tomislav (29886)
- Vrbos, Nevenka (43044)
- Čurlin, Danijel
Proceedings title: XV. savjetovanje o tehnološkim dostignućima i ekološkim riješenjima ...
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 55 to 67
Meeting: XV savjetovanje o tehnološkim dostignućima i ekološkim riješenjima u proizvodnji cementa i azbest-vlakno cementa
Held: from 11/05/92 to 11/07/92
Summary: The hydration of high alumina cement may be
considerablyinfluenced by addition of small quantities of alkali meta
salts.The influence of concentration of salts and type of alkali
metalcation have been studied. The measurement of flexural andcompressive
strength of HAC and HAC with lithium and other alklimetal salts have been
made. The lithium cation has greathereffect on the hydration then other
alkli metal cations. Alongwith rapid setting, lithium salts cause the
strength developmentat early ages. The integral analyses of the results
have beenmade in order to test the process of hardening. The process obeysa
simple first-order reaction rate in the period of 6 h afterfirst apearance
of the strength. The action of lithium containingsetting accelerators is
based on a shortening of the inductionperiod, while they have no effect on
the rate of hardening.
- Type of paper
: Paper in proceedings
Title: Lithium salts as Set Accelerators for High Alumina Cement
- Authors:
- Matusinović, Tomislav (29886)
- Vrbos, Nevenka (43044)
Proceedings title: 9th International Congres on Chemistry of Cement
Language: engleski
Place: New Delhy, Indija
Year: 1992
Pages: from 425 to 430
Meeting: 9th International Congres on Chemistry of Cement
Held: from 11/23/92 to 11/28/92
Summary: The research has been carried out to develop rapid setting
andhardening cement materials for repair of concrete. The highalumina
cement HAC has been used. The effect of alkali metalsalts on the setting
time has been studied. The influence ofconcentration of the salts chemical
nature of the anions and typeof the alkali metal cations have all been
investigated. Theresults of the research indicate that lithium salts are
veryeffective accelerators of HAC. By increasing the concentration ofthe
salts , the setting time decreases. The lithium cation hasmore effect on
the setting time than other alkali cations becauseof its ability to form
tetrahedral symmetry while the others willform the octahedral type. The
effect of hydroksyl ion in thealuminium enviroment leading to furter
contres for oxobridgeformation. The measurements of flexural and
compressive strengthof HAC with lithium nitrate have been made. Lithium
nitrate causedecreasing of flexural and compressive strength of HAc
mortarsbut alco cause the strength development at early ages.
- Type of paper
: Paper in proceedings
Title: The Kinetics of hardening High alumina Cement by Lithium
Carbonate
- Authors:
- Matusinović, Tomislav (29886)
- Vrbos, Nevenka (43044)
- Čurlin, Danijel
Proceedings title: 6th Mediterranean Congres on Chemical Engineering
Language: engleski
Place: Barcelona, Spain
Year: 1993
Pages: from 733 to 734
Meeting: 6th Mediterranean Congress on Chemical Engineering
Held: from 10/18/93 to 10/20/93
Summary: Along with rapid setting , lithium salts cause the
strengthdevelopment at very early ages. tHE INTEGRAL ANALYSES ODŽF
TEHRESULTS OF COMPRESSIVE strength measurement has been in order totest the
proces of hardening.
The proces follows the first order kinetics rate constant isindepedent on
lithium concentration and induction perioddecreasee significantly by
addition of lithium carbižonat. Theinduction period is the reflection of
the nucleation barriercaused by an initiali fast precipitation of lithium
aluminate.The existence of lithium hydrometaaluminate in HAC paste
hydratedin solution of lithium carbonate has been proved by
X-raydiffraction.
- Type of paper
: Paper in proceedings
Title: Rapid Setting and Hardening Cement Materials
- Authors:
- Matusinović, Tomislav (29886)
- Čurlin, Danijel
Proceedings title: Od uzorka do podatka i imformacije
Language: hrvatski
Place: Opatija
Year: 1993
Pages: from 0 to 0
Meeting: Od uzorka do podatka i imformacije
Held: from 10/20/93 to 10/23/93
- Type of paper
: Paper in proceedings
Title: Strength and Porosity of Cement Material
- Authors:
- Matusinović, Tomislav (29886)
- Čurlin, Danijel
Proceedings title: XVI.sav.o teh. dost.i ekol.rješ.u proiz.cem.i vlakno-cem.proizv.,Zbornik radova
Language: hrvatski
Place: Split
Year: 1995
Pages: from 81 to 90
Meeting: XV savjetovanje o tehnološkim dostignućima i ekološkim riješenjima u proizvodnji cementa i azbest-vlakno cementa
Held: from 02/06/95 to 02/08/95
- Type of paper
: Paper in proceedings
Title: Strength and Structure Relation of Cement Material
- Authors:
- Matusinović, Tomislav (29886)
- Vrbos, Nevenka (43044)
Proceedings title: XVI.sav.o teh.dost.i ekol.rješ.u proiz.cem.i vlakno-cem.proizv.,Zbornik radova
Language: hrvatski
Place: Split
Year: 1995
Pages: from 91 to 98
Meeting: XV savjetovanje o tehnološkim dostignućima i ekološkim riješenjima u proizvodnji cementa i azbest-vlakno cementa
Held: from 02/06/95 to 02/08/95
- Type of paper
: Summary in proceedings
Title: Strength and Porosity of Rapid Setting and Hardening
Cement Material
- Authors:
- Matusinović, Tomislav (29886)
- Čurlin, Danijel
Proceedings title: XIV. Sastanak hrvatskih kemičara, Knjiga sinopsisa
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 341 to 341
Meeting: XIV. sastanak hrvatskih kemičara
Held: from 02/06/95 to 02/08/95
- Type of paper
: Summary in proceedings
Title: Strength and Structure Relation of Rapid Setting and
Hardening Material
- Authors:
- Matusinović, Tomislav (29886)
- Vrbos, Nevenka (43044)
Proceedings title: XIV. Sastanak hrvatskih kemičara, Knjiga sinopsisa
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 363 to 363
Meeting: XIV. sastanak hrvatskih kemičara
Held: from 02/06/95 to 02/08/95
- Type of paper
: Summary in proceedings
Title: Rapid Setting and Hardening Cement Materials
- Authors:
- Vrbos, Nevenka (43044)
- Hodžić, Emir (15934)
- Matusinović, Tomislav (29886)
Proceedings title: Sinopsisi 12. sastanka kemičara Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1991
Pages: from 295 to 295
Meeting: 12 sastanak kemičara Hrvatske
Held: from 02/11/91 to 02/13/91
- Type of paper
: Summary in proceedings
Title: Lithium Salts in Rapid Setting and Rapid Hardening
materials
- Authors:
- Čurlin, Danijel
- Vrbos, Nevenka (43044)
- Matusinović, Tomislav (29886)
Proceedings title: Sinopsisi 13. sastanka kemičara Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 270 to 270
Meeting: 13. sastanak kemičara Hrvatske
Held: from 02/10/93 to 02/11/93
- Type of paper
: M.A.
Title: Rapid Setting and Hardening of High Alumina Cement
Materials
Faculty: Fakultet kemijskog inženjerstva i tehnologije Sveučilište u Zagrebu
Date of defense: 10/15/94
Language: hrvatski
Number of pages: 112
Summary: The set of high alumina cement has been considerably
influenced by addition of small quantities of alkali metal salts. Along
with rapid setting, lithium salts cause the strength development at early
ages. The integral analyses of the results of compressive strength
measurement was been made in order to test the process of hardening. The
process follows the first order kinetics, rate constant is independent on
lithium concentration and the induction period decreases significantly by
addition of lithium carbonate. The induction period during precipitation of
calcium aluminate hydrates is reflection of the nucleation barrier to the
formation of this compounds. The accelerating effect of lithium carbonate
has been attributed to a removal of this barrier caused by initially fast
precipitation of lithium hydrometaaluminate. The comprehensive analyses of
the solution extracted from cement slurries show that alumina, released
into solution by hydrolyses of HAC has been imidiately precipitated as
lithium hydrometaaluminate. These dried, powdered, synthetically prepared
compound, has been thougt to act as a heterogeneous nucleation substrate,
thus eliminating the induction period. Physical property of the new
material (strength, porosity) has been measured to determined the
connection between these properties. It has been obtained the function as a
connection between strength and porosity of a such material.
Keywords: High alumina cement, hydration, setting, hardening, alkali metal salts, lithium cation, integral analyses, compressive strength, porosity.
- Type of paper
: Mentorship
Title: Rapid Setting and Hardening of High Alumina Cement
Materials
Faculty: Fakultet kemijskog inženjerstva i tehnologije Sveučilište u Zagrebu
Mentor: MATUSINOVIĆ TOMISLAV
Date of defense: 10/14/94
Number of pages: 112
Author: Čurlin dipl.inž. Danijel
Degree level: M.A.
- Type of paper
: New product
Title: Kidroinsulating material
- Authors:
- Matusinović, Tomislav (29886)
- Type of paper
: Invited lecture
Title: Hydration of Alumina Cement in Presence of Accelerators
Institution: XVI. savjetovanje o tehnološkim dostignućima i ekološkim rješenjima u proizvodnji cementa i vlakno-cementnih proizvoda
Year: 1995
