Comportamiento del residuo de vidrio molido en cementos mezcla: Estudio comparativo con microsilice
AUTOR(ES)
Trezza, Mónica Adriana, Rahhal, Viviana Fátima
FONTE
Matéria (Rio J.)
DATA DE PUBLICAÇÃO
05/03/2018
RESUMO
ABSTRACT Due their high content of silica in an amorphous state the glass, in theory, can behave as pozzolanic material when are finely ground. This opens up an interesting way of reusing these materials in the Portland cement industry (CP), especially considering that solid urban waste (RSU) in Argentina contains between 3 and 5% by weight of glass. This paper studies the behavior of ground white glass from bottles, in compares that corresponding to microsilice (MS), with recognized activity. The objective of this paper is analyzed the structural differences, mineralogical composition, size and particle shape of the MS and the ground glass in terms of reactivity and pozzolanic activity. Experimental results on pastas and mortars with variable percentages of both additions (8, 16 and 24%) are presented. The kinetics of early hydration by conduction calorimetry, the potential pozzolanity by the Frattini test and the X-ray diffraction (DXR) paste hydration monitoring are analyzed. Fluidity and compressive strength results are shown on standar mortars at 2, 7 and 28 days. In general the incorporation of ground glass develops its reactivity more slowly and to a lesser extent than the MS, however it does not reduce the fluidity of the mortars and contributes significantly to the compressive strength.
Documentos Relacionados
- Estudio experimental de láminas de vidrio en voladizo
- Estudio del comportamiento en enfriamiento continuo del acero martensítico ferrítico de activación reducida F82H
- Monitorizacion del gasto cardiaco con ecocardiografia transtoracica y cateter de Swan Ganz. Estudio comparativo en pacientes en ventilacion mecanica con presión positiva espiratoria final elevada
- Dificultades en el aprendizaje del álgebra, un estudio con pruebas estandarizadas
- Estudio del comportamiento de fundición CADI sometida a FCR