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Parent Asphalt Mixture Design of Semi-flexible Pavement based on Method of Main Mineral Aggregate Void Filling Guoliang Yang1, a, Kuanghuai Wu1, b, Weiming Wang1, c， Fanbing Meng2, d， Yanfeng Li1, e and Xiuning Bao1, f 1School of Civil Engineering of Guangzhou University, Guangzhou, Guangdong, 510006, China 2GZHU Engineering Inspection and Consulting Co.

Alternative Selection of Expressway in the National Nature Reserve Jianping Gao1, a, Xuguang Zhang1, Zhuo Zhang1, Guoxiong Wu1 1School of Civil & Architecture,Chongqing Jiaotong University,Chongqing, China ae-mail: Jianping@cqjtu.edu.cn Keywords: expressway; nature reserve; route alternative; Gaoligong Mountain; set pair analysis Abstract：Since the alternativened Baoshan-Tengchong expressway happens to be within the influence scope of Gaoligong Mountain National Nature Reserve.
By choosing ten evaluation indexes from the three aspects of economy, environmental impact and operation safety, a route alternative evaluation index system is established in the light of two route alternatives of Baoshan-Tengchong expressway put forward in the engineering project feasibility study stage, namely, the super long tunnel directly passing through the mountain alternative or bypassing it along the existing expressway alternative.
As properly handling the the relationship between expressway construction and the nature reserve is the core of the alternative and comparison of the route alternative, two route alternatives are put forward in the engineering project feasibility study stage, namely, the super long tunnel passing directly through the mountain alternative or bypassing it along the Hangzhou-Ruili expressway alternative.

Coatings Based on Light-Weight Alkali Activated Mortars for Steel Corrosion Protection Giulia MASI1,a* and Maria Chiara BIGNOZZI1,b 1Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, via Terracini, 28, 40131 Bologna (Italy) agiulia.masi5@unibo.it, bmaria.bignozzi@unibo.it Keywords: Fly ash; alkali activated materials; geopolymers; porosity; steel corrosion; durability.
Alkali activated materials and geopolymers have attracted a lot of attention in the last 20 years thanks to their excellent mechanical performances, durability and sustainability properties, especially for civil applications.

Many relationships among independent and dependent variables in engineering are not linear.
Refrigeration and Air-Conditioning Engineers, Inc, 2001
Freitas, Moisture transfer in building walls – Interface phenomenon analyse, PhD Thesis; Faculty of Engineering, University of Porto, Porto, Portugal, 1992
Perrin, Study of coupled heat and mass transfer in consolidated, unsaturated porous materials used in civil engineering, PhD thesis, University Paul Sabatier, 1985
Departamento de Engenharia Civil

Benaissa 3,c 1Instrumentation and Advanced Materials Laboratory, Department of Civil Engineering, Faculty of Technology, University Center Nour Bachir-Elbayadh, Algeria 2Laboratory of Construction, Transport and Environmental Protection (LCTPE), Department of Civil Engineering, Faculty of Technology, University Center Nour Bachir-Elbayadh, Algeria. 3Department of Civil Engineering, Faculty of Technology, University of Oran, Algeria a*m.messis@cu-elbayadh.dz, bnbouhamou@yahoo.fr, cdzbenaissa@yahoo.fr Keywords: Raw earth block, wheat straw, mechanical property, durability, thermal conductivity, ultrasound.
Kadja, et al., "Hygric buffer and acoustic absorption of new building insulation materials based on date palm fibers," Journal of Building Engineering, vol. 12, pp. 132-139, 2017
Seynou, et al., "Physical, thermal and mechanical properties of adobes stabilized with fonio (Digitaria exilis) straw," Journal of Building Engineering, vol. 23, pp. 250-258, 2019

Material Test on Aluminum Alloy Round Pipe for Building Structure Yongtao Gao 1,2,a andXiao Hu 1,2,b 1School of Environment and Civil Engineering, Chengdu University of Technology, China, 610059 2State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu, 610059 a gaoyongtao302@163.com, bhuxiao@cdut.cn Keywords: Aluminum Alloy Round Pipe; Extending Test; Compressing Test; Elastic Modulus Abstract.
Loading Process The test is carried out with the WAW31000 programmed controlled electric-hydro universal testing machine in the lab of Construction Engineering Department, Chang’an University.

Introduction The cement-based materials mixed with low elastic modulus polypropylene fiber are new composite building materials which have been developed rapidly and used widely in the transportation engineering especially in recent years[1,2], as the brittleness of concrete can be significantly reduced and flexural capacity together with wear-resisting property to be enhanced due to mixing of polypropylene fiber[3].
Guangdong Civil Engineering & Construction, 2000, (1): 40-43,46.

Finite Element Analysis and Structure Design for Chassis of Aircraft Towbarless Tractor Zhiwei XING 1, a, Yong LV 2, b, Junhui LI 2, c 1 Ground Support Equipment Research Base, CAUC No.2898, Dongli District, Tianjin, China 2 Aeronautical Automation College, Civil Aviation University Of China, Tianjin, China azhiweixing@yahoo.cn, blvyong223@126.com, clijunhvi@163.com Keywords: Aircraft towbarless tractor, Chassis model, Finite element analysis Abstract.
ZHAO, Dynamic analysis and optimization design of the frame Dynamic analysis and optimization design of the frame [J], Joumal of shenyang institute of aeronautical engineering.2006,2320-23 [6] A.Mirechei, M.HedayatiZadeh, A.Jafari, M.Omid.
LIU, Static strength experiments and analysis with FEA of the motorbike frame [J], MECHANICAL RESEARCH & APPLICATION, 2005, 22(6):72-73 [9] Hadad,J, Ramezani, A.Finite element model updating of a vehicle chassis frame [J],Proceedings of the 2004 International Conference on Noise and Vibration Engineering,2004:1817-1831

Impacts of ultrasound and ozone disinfection of WWTPs secondary effluent Yuan Zhao a, Zifu Li b and Yang Zhang c School of Civil & Environmental Engineering University of Science and Technology Beijing, Beijing, China aadayuan2003@163.com, bzifulee@ yahoo.com.cn, czhangyang83609@yahoo.com.cn Keywords: Ultrasound, Ozone, Synergistic disinfection, Wastewater Abstract.
Pandit: Biochemical Engineering Journal, 2004. 18(1): p. 9-19

The Research on Performance of Hollow Partition Precast with Recycled Concrete Zhong Min 1, a, Xie Bin 2,b 1School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010 China 2School of Civil Engineering and Architecture, Southwest University of Science and Technology aloveminmin1122@163.com, bxiebin229@163.com Keywords: Construction Waste, Recycled Concrete, Hollow Partition Abstract.
Recycling concrete will reduce the amount of material that is landfilled and the need for virgin materials in new construction, so it is considered as a effective way to alleviate the environmental impact caused by construction engineering.