Abstract
In recent years, the evolving technologies have continuously improved the mechanical properties of cement concrete. In this paper, a test is conducted on different formula of nanomaterial admixture in attempt to analyze its effect on mechanical properties of concrete in many cases, for example, it is monomer or compound. On this basis, the mechanisms of nanoscale fine powder mono and compound effects are investigated. The results show that the nanometers SiO2 and CaCO3 can help improve the early strength of the concrete, but rarely work on its later property. The dosage of nonameter SiO2 shows a positive correlation with the early strength of concrete. Compared to mono admixture, the addition of compounds has a better effect on the concrete compression strength, especially on the early strength, while the later strength is also improved. The nanomaterial admixture alone can effectively improve the concrete structure in the transition area. Compound admixture can make concrete have a better strength and compact effect or faster hydration speed.
