Ang Liu

Qingdao University of Science and Technology

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Shaochun Li

Qingdao University of Technology

Yongjuan Geng

Qingdao University of Technology

Weihua Li

Harbin Institute of Technology

Song Gao

Qingdao University of Technology

Huiwen Tian

Institute of Oceanology

Bin Han

Tianjin Medical University

Yang Song

Western University

Zheng Li

Laoshan Laboratory

Dongshuai Hou

Qingdao University of Technology

Peng Han

North China University of Water Resources and Electric Power

Cooperative Institutions

Qingdao University of Technology

Chinese Academy of Sciences

Qingdao University of Science and Technology

Ocean University of China

Institute of Oceanology

Qingdao National Laboratory for Marine Science and Technology

Beijing University of Civil Engineering and Architecture

University of Chinese Academy of Sciences

Shanghai Jiao Tong University

Ministry of Natural Resources

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Causal associations of depression with chronic respiratory diseases: a mendelian randomization study

Zhiyuan Chen Ang Liu Wan-Jing Zheng Gao Xiao-hua Ping-Yang Hong

Mendelian Randomization

Depression

10.1183/13993003.congress-2024.oa1889

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Citations (0)

In-situ growth of layered double hydroxides nanosheet arrays on graphite fiber as highly dispersed nanofillers for polymer coating with excellent anticorrosion performances

Journal of the Taiwan Institute of Chemical Engineers (2019)

Ang Liu Huiwen Tian Xiaodan Ju Wei Wang Peng Han

Nanosheet

Layered double hydroxides

Polyvinyl Butyral

10.1016/j.jtice.2019.09.006

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Citations (32)

The effect of layered double hydroxides intercalated with vitamin B3 on the mechanical properties, hydration and pore structure of cement-based materials

Materials Letters (2021)

Heng Yang Chuansheng Xiong Ang Liu Weihua Li

Layered double hydroxides

10.1016/j.matlet.2021.130228

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Citations (17)

Adhesion Performance of Ettringite at the Interface with Silane and GO/Silane: Insights into Molecular Dynamics Simulations

ACS Omega (2023)

Shaochun Li Yuying Duan Heping Zheng Dongshuai Hou Shiyu Sui

The application of silane in sulfoaluminate cement repair materials can improve its waterproof, permeability, freeze-thaw, and other properties, but it would reduce the mechanical properties of sulfoaluminate cement-based materials, making it unable to better meet the engineering requirements and durability indices. The modification of silane with graphene oxide (GO) can effectively address this issue. However, the failure mechanism of the interface between silane and sulfoaluminate cement-based materials and the modification mechanism of GO remain unclear. In this paper, the interface-bonding mechanical models of isobutyltriethoxysilane (IBTS)/ettringite and GO-IBTS/ettringite are established by molecular dynamics method to study the source of interface-bonding properties of IBTS, GO-IBTS, and ettringite, as well as the failure mechanism of interface bonding, to reveal the mechanism of GO-modifying IBTS to improve the interface-bonding properties of IBTS and ettringite. This study finds that the bonding properties of the IBTS, GO-IBTS, and ettringite interface are derived from the amphiphilic nature of IBTS, which can only produce unilateral bonding with ettringite, thus becoming a weak link in interface dissociation. The double-sided nature of GO functional groups enables GO-IBTS to interact well with bilateral ettringite, thus enhancing the interface-bonding properties.

Ettringite

10.1021/acsomega.2c08123

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Citations (9)

High-Pressure Structures and Transformations of Calcium Borohydride Probed by Combined Raman and Infrared Spectroscopies

The Journal of Physical Chemistry C (2010)

Ang Liu Shuntai Xie Shahab Dabiran-Zohoory Yang Song

Calcium borohydride (Ca(BH4)2) has attracted significant interest in recent years due to its strong potential for hydrogen storage applications. Here, we report the pressure-induced structural transformations of Ca(BH4)2 probed by combined Raman spectroscopy and infrared (IR) spectroscopy up to 10.4 GPa at room temperature. Starting with the α phase in an orthorhombic structure, Ca(BH4)2 was found to undergo several transformations upon compression, as evidenced by the sequential changes of characteristic Raman and IR modes as well as by examining the pressure dependences of these modes. In situ Raman and IR measurements collectively provided consistent information about the structural evolutions of Ca(BH4)2 under compression. Decompression measurements on Ca(BH4)2 suggest that the pressure-induced transformations are reversible in the entire pressure region. The combined Raman and IR data allowed for an in-depth analysis of possible high-pressure structures of Ca(BH4)2.

Orthorhombic crystal system

Borohydride

10.1021/jp1009115

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Citations (18)

A Comprehensive Analysis of Pore Structures and Performances of Mineral Admixtures Modified Recycled Aggregate Concrete Based on Experiment and Theory

SSRN Electronic Journal (2022)

Song Gao Yuan Ji Zhenwei Qin Hengwu Zhang Fei Xing

Recycled aggregate concrete (RAC) is an important form of construction waste resource utilization, but the existence of multiple interface transition zone (ITZ) leads to complex pore defects in RAC, which seriously weakens its mechanical properties and durability. In this paper, fly ash (FA) , silica fume (SF) and mineral powder (SL) admixtures were incorporated into RAC for improving the pore structure of RAC. The effects of admixtures on the pore structure parameters and pore size distribution of RAC were detailly analyzed by means of back scattering electron imaging (BSE), mercury intrusion porosimetry (MIP) and fractal dimension theory (FDT). And the micro characteristics of porosity and pore structure in ITZ were quantitatively described. The results clearly show that the appropriate amount of admixture can reduce the porosity, average pore diameter and the most probable pore diameter of RAC. Furthermore, the macropores and capillary pores were significantly decreased and gradually changed into transition pores and gel pores. The refinement of pores increases the compactness of RAC, particularly the pozzolanic effect of silica fume. The newly generated C-S-H gel and the filling effect of silica fume greatly decrease the porosity of ITZ. In addition, the FD of pore volume exhibits a good positive linear relationship to the compressive strength and chloride ions penetration resistance of RAC.

10.2139/ssrn.4184140

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Spatial distribution, source analysis, and ecological risk assessment of polycyclic aromatic hydrocarbons (PAHs) in the sediments from rivers emptying into Jiaozhou Bay, China

Marine Pollution Bulletin (2021)

Bin Han Ang Liu Jinwen Gong Qian Li Xiuping He

10.1016/j.marpolbul.2021.112394

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Citations (41)

Preparation of Hydroxylated Hexagonal Boron Nitride/Isobutyltriethoxysilane Composite Emulsions for Improved Waterproofing Performance of Cement Coating

Zhijun Liu Shaochun Li Shiyu Sui Ang Liu Yongjuan Geng

In this study, to improve the waterproofing of cement, hexagonal boron nitride (h-BN) underwent hydroxylation modification, and h-BN/isobutyltriethoxysilane (IBTS) emulsion was prepared by sol-gel method. The hydroxylation and structure of h-BN were investigated under different preparation and modification conditions. The optimal hydroxylation was obtained in the h-BN prepared at 140 â„ƒ for a heating time of 18 h with 8 mol/L NaOH. The bonding and interaction mechanisms of hydroxylated h-BN and silane were analyzed. Modified h-BN exhibited good dispersion in silane, thereby filling defects. Applying h-BN/IBTS on cement, the water absorption coefficient and average surface energy decreased.

Waterproofing

Hexagonal boron nitride

10.2139/ssrn.4374846

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Citations (1)

A comprehensive analysis of pore structures and performances of mineral admixtures modified recycled aggregate concrete based on experiment and theory

Construction and Building Materials (2022)

Song Gao Yuan Ji Zhenwei Qin Hengwu Zhang Fei Xing

Silica fume

Mercury intrusion porosimetry

Porosimetry

Pozzolanic activity