By comparison with normal aluminum, the combustion heat and the available aluminum contents of different nano-aluminum powders were investigated.

Studies were performed on the process parameters for sodium percarbonate synthesis and the correlation(between) characteristic IR Spectra and the active oxygen content.

By way of determination of active matter content, adsorption amount and ζpotential of four different superplasticizers and in the light of the effect mechanism of superplasticizers, analysis was made of the cause for slump loss and sodium sulfoanatephenol formaldehyde was proved to be the best superplasticizer out of the four.