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Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

For promoting a green, low-carbon way of disposition of architecture sediment and resource utilization, alkali-activated blast furnace slag (GGBS) as a green solidification agent was adopted to solidify mucky engineering waste soil for subgrade filling. The influence of different dosages of solidification agent on the comprehensive performance of solidified soil was explored. Furthermore, X-ray diffraction, scanning electron microscopy and nuclear magnetic resonance were carried out to characterize the properties of the solidification. Fractal theory was used to describe the micropore characteristics and a generalized model was established to reveal the mechanism of alkali-activated GGBS solidification of muddy muck. The results show that the liquid limit and plastic limit of the solidified soil is increased and the plasticity index is reduced owing to the curing agent. The optimum moisture content decreased first and then increased with the increase of the content of the curing agent. The maximum dry density is the opposite compared with that of the optimum moisture content. The addition of curing agent can improve the mechanical properties and water stability of slag soil. The strength, CBR, water stability, and permeability of 10% solidified slag is 2. 36 MPa, 210. 7%, 81. 3%, and 1. 36 × 10 - 7 cm/ s, respectively. All indicators can satisfy the engineering application requirement. The micro-mechanism showes that the main hydration products of the improved soil are (N, C)-A-S-H and ettringite Aft. The number of main pores in the solidified soil is reduced. For the slag with 10% of calcium solidification agent, the middle pores are reduced by 14. 7%, and the fractal dimension of pore distribution is reduced from 1. 23 to 1. 06. The solidification of muddy engineering waste soil by alkali activated GGBS has improved the stability of the waste soil and has good application prospects. [ABSTRACT FROM AUTHOR]

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Many studies on dust detection by remote sensing have been carried out in the past. However, for the thin dust and complex conditions on various surface, the effect of traditional methods was poor. Himawari-8 data were used to propose a targeted method, thus the fractional dust cover index ( FDCI) was introduced based on the dynamic brightness temperature background map. The index could effectively identify dust with different intensities, and improve the identification accuracy of thin dust. At the same time, an enhanced dust intensity index( EDII) method for estimating the dust intensity index was proposed based on the results. The identified results of four dust weather were given and verified by the ground observation. The ground verification of the dust intensity on May 3, 2017 showed that the dust intensity observed on the ground was consistent with the estimated results at 22 stations. For various surface and dust intensity, this method was an effective improvement of the brightness temperature difference. [ABSTRACT FROM AUTHOR]

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Technology Economics is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)