This paper aims to evaluate the impact of thermal curing and the use of particle packing in ultra-high-performance concrete (UHPC) using glass powder as a partial substitution of Portland cement. For this, specimens with 0% and 50% of glass powder (volumetric substitution to cement) were produced, as well as two mixes obtained by particle packing. The samples were submitted to thermal and standard curing to compare the effects. The samples were tested for compression resistance and capillary water absorption. The results indicate that thermal curing provides a high gain of resistance in early ages, the application of particle packing in the mix design resulted in a significant improvement in the concrete properties and the glass powder presented as a viable substitute for cement.
O pó de vidro incorporado ao concreto convencional vem sendo estudado em relação à sua influência na resistência mecânica e durabilidade. Este trabalho visa avaliar a durabilidade de compósitos cimentícios de ultra alto desempenho (CCUAD) com substituição parcial do cimento por vidro finamente moído, por meio do ensaio de migração de cloretos utilizando o método da NT Build 492. Para tanto foram moldados corpos de prova com teores de pó de vidro de 0%, 10%, 20%, 30% e 50% em relação ao volume de cimento e a avaliação foi feita na idade de 28 dias. Os resultados indicam que, em teores baixos, o pó de vidro não prejudica as propriedades dos compósitos e em teores mais altos os compósitos mantêm boas características mecânicas e de durabilidade.
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