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Silica fume for footbridge UHPC can be added to ultra-high performance concrete used in the construction of footbridges.The maximum strength of the matrix prepared by grade 52.5 silica powder for UHPC was reached at a flow of 175 mm and that prepared by grade 42.5 mesothermal cement at a flow of 180 mm. The results of all the experiments of the two kinds of cements with different microsilica and silica fume dosage show that the groups with better strengths are shown in Table 5, which indicates that the strength grade of the cement itself does not have a significant effect on the maximum strength that can be attained by UHPC, but the different varieties of cements have a great influence on the compressive strength of the specimens of the UHPC matrix with different proportions through the action on the flow degree of the matrix, which then affects the compressive strength of the specimens of the UHPC matrix to a great extent under different ratios.The compressive strengths of the matrices prepared with the two kinds of cements are all at The compressive strength of the two cements reached its maximum at a flow rate of about 180 mm, when the strength and workability of the concrete were best co-ordinated. It can be assumed that the UHPC matrix with white silica fume has a higher strength at a water-cement ratio of 0.17.
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Main Product:
Microsilica ,
Silica Fume,
Blank Silica Fume,
Gray Silica Fume,
Semi-encrypted Silica Fume,
Zirconium Silicon Fume
