Sodium aluminate is a flowable white powder that is ready dissolvable in water, with a high concentration alumina oxide. In cement applications, sodium aluminate is an effective accelerator & hardness enhancer, commonly used to accelerate shotcrete. Sodium aluminate also has the added advantage of working well in cold climates and when frost is present. Sodium Aluminate is a thixotropic additive designed to help control free water while promoting early strength development. Sodium aluminate is a flowable white powder that is ready dissolvable in water, with a high concentration alumina oxide. In cement applications, sodium aluminate is an effective accelerator & hardness enhancer, commonly used to accelerate shotcrete. Sodium aluminate also has the added advantage of working well in cold climates and when frost is present.