|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Technical Division Student Poster Competition
||SPU-14 : High Strength Air-entrained Concrete with Partial Replacement of Fly Ash and Nanostructured Silica
||Marivette Rullán~Semidey, O. Marcelo Suárez, Hildelix Soto, Carlos Medina
|On-Site Speaker (Planned)
Addition of aluminum in concrete mixture causes the formation of spherical hydrogen gas pores in the composite. This factor presents ideal characteristics for cold regions, as the expansion of water upon freezing is contained within those pores, which lessens the potential of cracks within the concrete. Alas, the addition of aluminum in the concrete mixture degrades its performance upon mechanical properties tests because of the micro-pore formation. To develop a high performance concrete (HPC) containing aluminum the mixture was designed with the addition of silica nanoparticles as reinforcement, aluminum powder (0.005 to 0.02%), and fly ash. The compressive experimentation showed a decrease in strength for high aluminum levels. Promisingly at 28 days compressive strength tests on 0.01% Al mixtures showed a reduction of only 3.98% when compared to a mixture design with no Al and no silica nanoparticles incorporated. The results of these tests are those expected for an HPC.
||Definite: None Selected