Abstract
With better deformation capacity and less resistance than conventional concrete, cellular concrete with expanded polystyrene (EPS) is a more suitable alternative for obtaining concrete with a low specific mass. Since the late 1980s, alkali-activated slag concrete (AASC) without Portland cement has been gaining attention. However, no comprehensive study has been conducted to analyze blast furnace slag as a binder in the mixture of cellular concrete with EPS; further, the effects of the variation in water/binder ratios (w/b) on the characteristics of the foam have not been sufficiently studied. Tests using X-ray diffraction, thermogravimetry, ultrasound, resistance to axial compression, and absorption demonstrate the behavior of cellular concrete with an apparent density below 800 kg/m³ and mechanical resistance of 3 MPa. This work introduces an innovative application of the AASC for producing cellular concrete using EPS, as the foam with this type of binder seems more common.
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