Microfissuração e evolução da hidratação de concreto de cimento portland, com e sem adição de escoria, por meio da analise de imagens

AUTOR(ES)
DATA DE PUBLICAÇÃO

2001

RESUMO

Temperature and moist conditions during the curing period have great influence in the development in microstructure, durability and other properties of concrete. Electronic microscopy has been used to analyze the differences in microstructure, degree of hydration and microcracks, on samples submitted to different types of curing. The objective in this research is evaluate the mechanical properties, water absorption, air permeability and the evolution of hydration by image analysis of polished sections of concrete, submitted to two types of curing, steam thermal curing (60°C) and another one, with moist curing during seven days. In this research the blast furnace slag cement was used (53% of slag), the cement with high initial strength without additions (without slag) and the cement with high initial strength with additions (27% of slag). The increase of curing temperature is an activator of slag, present in blast furnace slag cement, than, this research intends to verify the influence of slag addition in the concrete properties

ASSUNTO(S)

concreto - efeito da temperatura cimento portland microestrutura processamento de imagens auxiliado por computador

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