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Effects of Minerals on the Dissolvable Ion Concentration and pH Value of Hardened Cement ZHU Hongbo1,2,a, WANG Peiming1,b ZHANG Jidong3,c 1Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804, China; 2Key Laboratory of Coastal Disaster and Defence of Ministry of Education, Hohai University, Nanjing 210098 China; 3Panzhihua Iron & Steel Research Institute, Panzhihua 617000, China a zhuhongbo501@sohu.com, b tjwpm@126.com, c jdongzh@yahoo.com.cn Key words: minerals, hardened cement, ion concentration, pH value Abstract.

Acknowledgment This study is granted from "Nihon University Department of Science and Engineering Project Research", and Ministry of Education "Scientific Research" [Grant-in-Aid for Scientific Research (C) representative: Yasuko Yoshino] Reference [1] Building Climate Classification Figure in China [2] China national standard civil construction insulation design criteria GB50716-93 [3] Solar Energy Resources’ Distribution in China [4] Grade Evaluation Method’s Criteria for Energy Conservation Measures, Ministry of Land, Infrastructure and Transport Notification 2001 No.1347-5-1 [5] National Weather Center in China Weather Data Room [6] Standard Calorific Value List by Energy Source, Ministry of Economy, Trade and Industry Agency for Natural Resources and Energy, General Energy Statistics Study Group Bureau [7] Design standard for energy efficiency of residential buildings in severe cold and cold zones, Chinese National Standard JGJ26-2010　 [8] Technical Handbook for Solar

Study on Stability of Underwater Trench of Immersed Tunnel of Hongkong-Zhuhai-Macau Bridge Lei Fang1, 3, a, Junsheng Chen1, 2, b,*, Hong Cao1, 2, c, Haihong Mo1, 2, d, and Shuzhuo Liu1,e 1 Dept. of Civil Engineering，South China University of Technology, Guangzhou, Guangdong, 510640, China 2 State Key Laboratory of Subtropical Building Science，South China University of Technology, Guangzhou, Guangdong, 510640, China 2 Hong Kong-Zhuhai-Macao Bridge Authority, Zhuhai, Guangdong, 519015, China afl@hzmbo.com, bjschen@scut.edu.cn (Corresponding author), ccaohscut@126.com, dcvhhmo@scut.edu.cn, eshzhliu@scut.edu.cn *,Corresponding author Keywords: Hongkong-Zhuhai-Macau Bridge, Immersed tunnel, Underwater trench, Slope stability.

Research on Fire Retardant Performance of Chinese Fir with the Compound of Disodium Octaborate Tetrahydrate and SiO2 Gels Qing-Qing Ye1,a , Xiao-Qian Qian1,b*, Jun-Ying Lai1,c 1,College of Civil Engineering and Architecture, Zhejiang University, HangZhou,310027,P.R.China email:20912142@zju.edu.cn, bmail:qianxq1@zju.edu.cn, cmail:junyinglai@zju.edu.cn Keywords: disodium octaborate tetrahydrate; anti-loss; fire retardance; Abstract:The environmental fire retardant mentioned in this paper was compounded of disodium octaborate tetrahydrate and silicon dioxygen(SiO2)gels.

Research on the Utilization of Renewable Energy in Tianjin Lili Tian1, a, Tiantian Wang1,b, Xiaojie Guan1,c, Zhengbang Liu1,d 1 College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China atianlili@nankai.edu.cn, bttw0410@163.com, c928165269@qq.com, dlzb9361@163.com Keywords: Renewable energy, Problems, Countermeasures, Tianjin Abstract.
Although there are civil society organizations such as institute of energy and wind power associations, they do not have absolute right in the use of renewable energy resources.

Foreign EV charging standards’ present situation At present, EV charging standards in foreign countries are divided into three systems: the International Electrotechnical Commission (IEC), Society of Automotive Engineers (SAE) and Japanese Electric Vehicle Society (JEVS).
In view of our China’s electric distribution network for civil is single-phase, GB/T 20234.2 cancelled three-phase power supply charging ways, but kept consistent with IEC 62196 in interface structure to reserve space for future development.

Harries 1,b 1Department of Civil and Environmental Engineering, University of Pittsburgh,3700 O’Hara Street, Pittsburgh, Pennsylvania, USA 15260 a bhs7@pitt.edu, b kharries@pitt.edu Keywords: bamboo, splitting, diametric compression Abstract.

Use of Glucose to Improve the Environmental Aspects of Chrome Tanning Process Monica Puccini1,a, Domenico Castiello2,d 1 Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy 2 Po.Te.Co.

Investigation of Fire Extinguishing Properties of Multicomponent Systems with Combined Action Based on Wetted Lightweight Bulk Materials for Extinguishing Polar Flammable Liquids KIREEV Alexandera, HAPON Yulianab*, NUIANZIN Vitaliic and DANYK Olenad National University of Civil Defence of Ukraine, 8, Onopriyenko str., Cherkasy, Ukraine, 18034 akirieiev_oleksandr@ nuczu.edu.ua, bhapon_yuliana@ nuczu.edu.ua, cnuianzin_vitalii@nuczu.edu.ua, ddanyk_olena@nuczu.edu.ua Keywords: alcohols, bulk materials, fire extinguishing system, flammable polar liquids, foam glass, ketones, perlite, vermiculite.
Key Engineering Materials. 954 (2023) 177–184

Voght, Magnesium semi-finished products for vehicle construction, Archives of Civil and Mechanical Engineering, 8 (2008) 93–101