The invention relates to high-performance concrete mix which comprises, by weight, 20-30 parts of tailing iron powder, 15-18 parts of pulverized fuel ash, 4-8 parts of coarse steel slag with the grain size of 2-5mm, 12-15 parts of fine steel slag with the grain size of 0.1-0.15mm,...
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Depending on the second project of the Yudong Changjiang River Bridge in Chongqing, C60 high-performance concrete materials are selected and then the water-cement mass ratio, sand rate and the types of admixtures to optimize the mix design are adjusted. By testing the mixture workability, mechanica...
This research was conducted in order to study the effect of various levels of replacement materials and to obtain the optimum mix possessing a maximum protection against acid attack. The parameter investigated was the time, in weeks, taken to cause 20% weight loss of fully-immersed concrete ...
Replacement of cement by other materials at high percentages generally lowers the early age strength of the resulting concrete. To cope with this problem, an optimisation method for mix design of concrete using Bolomey's law has been used. Following the encouraging results obtained from mortar, a...
1.2.2Curing of ultra-high performance concrete Various versions of UHPCs have been developed and reported over the past decade[19–21]. However, most formulations were proprietary, expensive, and time/labor intensive. Among the difficult-to-achieve protocols are pressure andheat treatment processesre...
Since the cement is the most expensive ingredient of concrete, and excessive cement in concrete usually results in a higher heat of hydration and increases creep and shrinkage that, in turn, adversely influences the durability of concrete, an essential mix‐design rule is to make HPC with a ...
high performance concrete applied to some thin wall pilla structure was worked out successfully in the west of china with big temperature gap by a large number of experiments,in order to improve cracking resistence and optimize mix of concrete,which will be helpful in improving concrete construction...
A study on the mix proportion of super-high strength concrete : Part 1. Effects of mix proportioning factors on workability SUGIMOTO Mitsugu , 下野 敏秀 , 米沢 敏男 , 和泉 意登志 , 柳橋 邦生 , 奥野 享 Summaries of technical papers of Annual Meeting Architectural Institute of Japan. A, ...
Mix Design and Benefit Evaluation of High Solar Reflectance Concrete for Pavements 喜欢 0 阅读量: 34 作者: K Boriboonsomsin,F Reza 摘要: The use of cool paving materials, or cool pavements, has been identified as one strategy that can help mitigate the urban "heat island" effect. One ...