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  • El cemento sin yeso representa un cemento a base de clinker Pórtland molido en lo más fino, cuyo elemento regulador de endurecimiento - yeso esta reemplazado por un otro sistema de regulación de endurecimiento. El sistema de regulación de endurecimiento de cemento sin yeso esta compuesto por carbonato de metal alcalino y lignina sulfonada de metal alcalino. El cemento esta molido por regla general por el área superficial específica de 450 - 600m2/Kg. Los cementos sin yeso se caracterizan por un rápido crecimiento de resistencia al cabo de un hasta tres días y por un corto principio de fraguado comparando con los tipos de cemento de Pórtland. En el artículo se detallan parámetros básicos de los cementos sin yeso producidos en la Republica Checa durante diferentes periodos de tiempo y evaluación de variabilidad de resistencia y principio de fraguado de estos tipos de cementos. Como resulta del análisis de resistencia efectuado y del principio de fraguado de diferentes tipos de
  • Gypsum-free cements are based on fine ground Portland clinkers containing setting regulation compound i.e. gypsum is replaced by another setting regulation system. This setting regulation system of gypsum-free cements consists of alkaline metal carbonate and lignin-sulphonate of alkaline metal. Generally, cements are ground to 450 - 600m2/kg of specific surface. Gypsum-free cements feature fast initial strength over 1 to 3 days and short initial setting time as compared with standard Portland cements. The paper describes basic parameters of gypsum-free cements made in the Czech Republic over various periods, along with evaluation of their strength variability and initial setting time. As it results from analysis of strength and initial setting time of various kind/batch of gypsum-free cements, production key problem consists mainly in provision of acceptable variability of initial setting time. Large variance of initial setting time values - even in a single batch - consequently results in problems du (en)
Title
  • Los cementos sin yeso - parámetros básicos y sus variabilidad
  • Gypsum-Free Cements - Their Basic Characteristics and Variability (en)
skos:prefLabel
  • Los cementos sin yeso - parámetros básicos y sus variabilidad
  • Gypsum-Free Cements - Their Basic Characteristics and Variability (en)
skos:notation
  • RIV/00216305:26110/08:PU82802!RIV10-MSM-26110___
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  • Z(MSM0021630511)
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  • 377173
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  • RIV/00216305:26110/08:PU82802
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  • cement, compressive strength, flexural strength, initial setting time, final setting time, variability (en)
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  • [04AE0BEE8CA1]
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  • Salvador-Bahéa
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  • Sao Paolo, Brazil
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  • 50 Congresso Brasileiro do Concreto Concreto para Infra-Estrutura e Preservacao do Meio Ambiente
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  • Brožovský, Jiří
  • Beneš, Dalibor
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number of pages
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  • Instituto Brasileiro do Concreto - IBRACON
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  • 978-959-261-281-5
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  • 26110
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