Abstract
The influence of different silica fume content on the slump, expansion, compressive strength and flexural strength of high-performance concrete was studied. The results show that with the increase of silica fume content, the slump, expansion, compressive strength, and flexural strength of high-performance concrete show a trend of increasing first and then decreasing. The optimal silica fume content of HPC(Highperformance concrete) is 3% to 6%.
Highlights
With the rapid development of the global economy, the modernization construction is getting faster and bigger, and the requirements for the quality of the project are getting higher
The specific surface area of silica fume is large, and the free water molecules in the fresh concrete are restricted by silica fume particles, which greatly reduces the amount of bleeding and the accumulation of moisture at the concrete interface, thereby improving the bonding performance of the interface[5]
The influence of silica fume content on HPC slump, expansion, compressive strength, and flexural strength is studied by mixing different amounts of silica fume
Summary
With the rapid development of the global economy, the modernization construction is getting faster and bigger, and the requirements for the quality of the project are getting higher. In order to obtain high-performance concrete with good workability and rapid growth in the early stage of the project, a certain amount of silica fume is usually added. Small spherical silica fume particles are filled between the cement paste, so that the cementitious material has a better assembly, reducing the harmful pores in the cement paste[4], making the internal structure of the concrete denser and increasing its strength. The specific surface area of silica fume is large, and the free water molecules in the fresh concrete are restricted by silica fume particles, which greatly reduces the amount of bleeding and the accumulation of moisture at the concrete interface, thereby improving the bonding performance of the interface[5]. The influence of silica fume content on HPC slump, expansion, compressive strength, and flexural strength is studied by mixing different amounts of silica fume
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