Civil and Environmental Engineering最新文献_第3页

Feasibility of Strengthening Sandy Soils Using Industry Waste as Geo-Fiber 利用工业废料作为土工纤维加固沙土的可行性

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-12-01 DOI: 10.2478/cee-2023-0059

Firas Jawad Kadhim, Musab Sabah Abed, Jwad K. Almusawi

{"title":"Feasibility of Strengthening Sandy Soils Using Industry Waste as Geo-Fiber","authors":"Firas Jawad Kadhim, Musab Sabah Abed, Jwad K. Almusawi","doi":"10.2478/cee-2023-0059","DOIUrl":"https://doi.org/10.2478/cee-2023-0059","url":null,"abstract":"Abstract Re-using waste generated from daily domestic usage to improve weak soils such as dune sand gives a profitable solution to both environment and the construction sector. In this paper, weak sandy soil was modified with two types of fibers derived from daily domestic use. Plastic bottle waste fiber and tainted polypropylene sediment filter fiber were embedded in the sandy soil with a rate of (0.5%,1%,1.5%, and 2%) by weight of dry soil. Toward this, the direct shear test was conducted to confirm the optimum fiber content and evaluate other parameters such as shear strength, normalized ultimate shear strength, angle of internal friction, and adhesion. The results showed that the 1.5% fiber content showed higher values of angle of internal friction and the normalized ultimate shear strength for both types of fibers. The reinforcement with plastic bottle waste fiber and tainted polypropylene sediment filter fiber enhanced the shear strength parameters and normalized ultimate shear strength. Significant improvement was noticed in the adhesion value with the addition of 2% of tainted polypropylene sediment filter fiber. finally, the effect of fiber addition on the Mohr-coulomb failure envelope was discussed.","PeriodicalId":42034,"journal":{"name":"Civil and Environmental Engineering","volume":"168 1","pages":"649 - 661"},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139014444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strengthening of Reinforced Concrete Beams with Textile-Reinforced Concrete 用纺织品加固混凝土加固钢筋混凝土梁

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-12-01 DOI: 10.2478/cee-2023-0054

Marwa Abd-Al-Naser, Ibrahim S. I. Harba

{"title":"Strengthening of Reinforced Concrete Beams with Textile-Reinforced Concrete","authors":"Marwa Abd-Al-Naser, Ibrahim S. I. Harba","doi":"10.2478/cee-2023-0054","DOIUrl":"https://doi.org/10.2478/cee-2023-0054","url":null,"abstract":"Abstract Numerous problems that can occur during regular building use may necessitate the need for reinforced concrete RC members to be strengthened. An increase in live loads or structural damage is two examples. Various techniques can be used to increase load-carrying capability. Concrete reinforcement with textile-carbon fiber (TCF) is a more recent option. For almost all active forces, this strengthening procedure is appropriate. For bending, shear, torsion, or axial forces, strengthening is an option. The experimental work for this study examined the impact of textile carbon mesh in reinforced concrete with various numbers of layers and sikadure-330 as the bonding material with different damage ratio (0%, 45%, 55% and 70%). As well as the flexural behavior of reinforced concrete beams strengthened with TCF, by casting and testing 13 beams under the monotonic load, one of them represented the control beam, they designed according to ACI 318-14 to ensure flexural failure. From the results obtained in this study it was shown that the flexural capacity of all strengthened beams increased as a consequence of TCF strengthening. Therefore, TCF jacketing is a very promising technique for increasing reinforced concrete flexural capability, which is necessary for retrofitting and strengthening.","PeriodicalId":42034,"journal":{"name":"Civil and Environmental Engineering","volume":"99 ","pages":"596 - 609"},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139016260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrolysis of Domestic Sewage Sludge: Effect of Process Parameters on Biochar Calorific Value 热解生活污水污泥：工艺参数对生物炭热值的影响

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-12-01 DOI: 10.2478/cee-2023-0058

H. Al-Hamaiedeh, S. Aljbour, T. El-Hasan, Tuqa Almrayat, Ziad Al-Ghazawi

{"title":"Pyrolysis of Domestic Sewage Sludge: Effect of Process Parameters on Biochar Calorific Value","authors":"H. Al-Hamaiedeh, S. Aljbour, T. El-Hasan, Tuqa Almrayat, Ziad Al-Ghazawi","doi":"10.2478/cee-2023-0058","DOIUrl":"https://doi.org/10.2478/cee-2023-0058","url":null,"abstract":"Abstract This research aims to look into a sustainable technique for the treatment, reuse and disposal of domestic sewage sludge (DSS). The purpose of the study was to examine the operating factors that influence the calorific value of the produced biochar from the pyrolysis of DSS. Based on the analysis of the full factorial design, the impacts of the pyrolysis conditions, specifically: temperature, heating rate, and isothermal time on the calorific value of biochar were evaluated. When the pyrolysis temperature was raised from 300 to 500 oC, the calorific value of biochar was decreased by 34%. A 14% decrease in the calorific content of the biochar was also noticed when the heating rate was increased from 5 to 35 oC/min. When the isothermal time was increased from 45 to 120 minutes, the calorific value of the biochar remained essentially unchanged. No interaction effects among process variables were found using the factorial design methodology. A first-order regression model was developed to predict the calorific value of biochar using the magnitude of the effects of the process factors and their interactions. The model predictions agreed very well with the obtained experimental results.","PeriodicalId":42034,"journal":{"name":"Civil and Environmental Engineering","volume":"642 2","pages":"640 - 648"},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139020761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Monitoring of Transition Zones in Railway Tunnels 铁路隧道过渡区的实验监测

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-12-01 DOI: 10.2478/cee-2023-0042

S. Hodas, A. Pultznerová, Erik Vrchovsky

引用次数: 0

Large Scale Shear Box Testing of Interface Between Construction Materials and Soils 建筑材料与土壤界面的大型剪力箱测试

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-12-01 DOI: 10.2478/cee-2023-0065

Filip Gago, Ján Mihálik, S. Masarovicová, Jozef Vlček, Vojtěch Boltnar, Lukáš Uličný

引用次数: 0

Tensile Force Distribution And Development Within Geogrid-Reinforced Retaining Wall 土工格栅加固挡土墙内的拉力分布与发展

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-12-01 DOI: 10.2478/cee-2023-0049

Marwa Feligha, Fatima Zohra Benamara, Nouaouria Mohamed Salah, S. Bekkouche, Benayoun Fadila

{"title":"Tensile Force Distribution And Development Within Geogrid-Reinforced Retaining Wall","authors":"Marwa Feligha, Fatima Zohra Benamara, Nouaouria Mohamed Salah, S. Bekkouche, Benayoun Fadila","doi":"10.2478/cee-2023-0049","DOIUrl":"https://doi.org/10.2478/cee-2023-0049","url":null,"abstract":"Abstract Geogrid-reinforced earth retaining walls used to improve soil quality, and provide additional shear strength in the soil mass through the tensile strength in the reinforcement layers. A numerical model was developed by finite element code PLAXIS2D, of a segmental facing geogrid-reinforced retaining wall. This research has been carried out to investigate the effect of loading increments, loading increments width, loading increments location, facing inclination angle, geogrid inclination angle, and geogrid-soil friction factor, on the behaviour of a geogrid-reinforced soil retaining wall. The results show that the failure plane occurred in the reinforced zone at the mid-height, this observation contradicted the triangular distribution with depth assumed in conception methodologies for reinforced soil retaining wall. The distribution of peak tensile strength with depth was bilinear at high loading increments and became trapezoidal at low loading ones. Furthermore, it was found that the behaviour of a geogrid-reinforced soil retaining wall is independent of loading increments width beyond 0.5H. It also seems that the loading increments location can change the shape and the position of the peak tensile strength. It also seems that the geogrid inclination angle has a major effect on the lateral facing displacements and safety factor.","PeriodicalId":42034,"journal":{"name":"Civil and Environmental Engineering","volume":"17 3","pages":"543 - 554"},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138988578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retraction 收缩

Civil and Environmental Engineering Pub Date : 2023-07-29 DOI: 10.2478/cee-2023-0041

引用次数: 0

Effect of Alternating Hybridisation of Fibres on the Physico - Mechanical Behaviour of Composite Materials 纤维交替杂交对复合材料物理力学性能的影响

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-05-12 DOI: 10.2478/cee-2023-0036

N. Harb, H. Dilmi, B. Bezzazi, Kahina Hamitouche

引用次数: 0

Effect of the Fibre Orientation Angles on Stress Concentration Around Various Shapes of Hole in Laminated Composite Plate Subject to in - Plane Loading 面内载荷作用下纤维取向角对复合材料层合板不同孔形周围应力集中的影响

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-05-12 DOI: 10.2478/cee-2023-0019

B. Yasin, Dana Qi’dan, Safa Al-Olimat, Mo’men Ayasrah, Hatem H. Almasaeid

引用次数: 0

Ductility and Distribution of Strains on Column Reinforcement Retrofit with Wire Mesh 钢丝网加固柱的延性及应变分布

IF 1.2

Civil and Environmental Engineering Pub Date : 2023-05-12 DOI: 10.2478/cee-2023-0013

A. Amiruddin, H. Parung, R. Irmawaty, M. Tumpu, Mansyur, P. R. Rangan

{"title":"Ductility and Distribution of Strains on Column Reinforcement Retrofit with Wire Mesh","authors":"A. Amiruddin, H. Parung, R. Irmawaty, M. Tumpu, Mansyur, P. R. Rangan","doi":"10.2478/cee-2023-0013","DOIUrl":"https://doi.org/10.2478/cee-2023-0013","url":null,"abstract":"Abstract A lot of damage to building structures due to earthquakes is damage to column components that serve as vertical elements to pass the load to the foundation. Ductility is one of the parameters that must be owned by the column and as part of the column, longitudinal reinforcement is part of the column element that is quite vital and one of the parameters that can be studied is the distribution of strains that occur in longitudinal reinforcement when burdened with cyclic loads. In this study, a study of the ductility and distribution of strain values occurred in the reinforcement of control columns and retrofit columns with wire mesh size M6. From the test results in can be that on the column that is retrofit with wire mesh and SCC experienced an increase in the value of ductility. While the strain value on the reinforcement of the control column and retrofit column tends to enlarge when it is in the plastic hinge area of the column. In the control column the strain value that occurs in the plastic hinge area is greater than the strain value in the retrofit column, so that in the control column the plastic hinge mechanism has begun to form, while in the retrofit column the plastic hinge mechanism has not been formed due to higher stiffness.","PeriodicalId":42034,"journal":{"name":"Civil and Environmental Engineering","volume":"19 1","pages":"149 - 155"},"PeriodicalIF":1.2,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69189498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0