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Archive of Advanced Engineering Science — Volume 52 (2020), Issue 3

Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : 412
Title : Interpretation Based on Frequency Spectrum Energy Analysis of Ground Penetrating Radar Detection Image
Wen S, , Yang X, , Guo Y,
Abstract : The ultra wide bandwidth nature of ground penetrating radar antenna has made a raw data acquired with the tool prone to unwanted noise and hence low signal to noise ratio. Quantitative interpretation of the data is desirable for radar image quality enhancement. This study used multiresolution analysis to process radar image at different levels of decomposition. Daubechie wavelets family was used to decompose the image into 4-different levels of details. Level 3 diagonal details and level 4 horiz
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : 413
Title : Preparation and Characterization of MnMnO2 Reference Electrode for Buried Concrete
Wang Penggang, , W. Yuan, , Guo Tengfei, , Zhao Tiejun, , Tian Li, , Jin Zuquan, , Wan Xiaomei, , Wang Lanqin,
Abstract : Chloride erosion is the most important factor affecting the corrosion of steel bars in the marine environment, salt lakes and saline soil areas. Therefore, timely and accurate grasp of the distribution of chloride ions inside reinforced concrete structures is of great significance to the durability evaluation, protection and repair of reinforced concrete structures under severe environmental conditions. In this paper, a solid Mn/MnO2 reference electrode for concrete with compact structure and st
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : 414
Title : Research on Influence Parameters of Early Strength of Fly Ash-based Geopolymer Mortar
Yang S, , Zhao R, , Jin H, , Li F, , Hu D,
Abstract : Geopolymer is a novel binding material produced from the reaction of fly ash with an alkaline solution. In Geopolymer mortar, Portland cement is not utilized at all. In this research, the influence of various parameters on the short term engineering properties of fresh and hardened low-calcium fly ash-based geopolymer mortar were studied. Tests were carried out on 70.71 × 70.71 × 70.71 mm cube geopolymer mortar specimens. The test results revealed that as the concentration of alkalin
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