CONSTRUCTION最新文献

Shear Strength of Soft Soil Reinforced with Singular Bottom Ash Column 用奇异底灰柱加固软土的剪切强度

CONSTRUCTION Pub Date : 2024-05-06 DOI: 10.15282/construction.v4i1.10448

M. S. I. Zaini, Muzamir Hasan

{"title":"Shear Strength of Soft Soil Reinforced with Singular Bottom Ash Column","authors":"M. S. I. Zaini, Muzamir Hasan","doi":"10.15282/construction.v4i1.10448","DOIUrl":"https://doi.org/10.15282/construction.v4i1.10448","url":null,"abstract":"Structures construct on soft clays are often affected by stability and settlement problems due to high compressibility, low shear strength and low permeability of soft clay which will lead to bearing capacity failure and excessive settlement. The soft clay samples had the dimensions of 50 mm diameter and 100 mm in height. The bottom ash column had two (2) different area replacement ratios which were 4% and 9% (10 mm and 15 mm diameters respectively) with the bottom ash column penetration ratio of 0.3, 0.7 and 1.0. The results of the unconfined compression test show that there is an improvement in shear strength of soft kaolin clay when reinforced with bottom ash column. For samples with area replacement ratio 4%, the results show the increment of 25%, 37.5% and 50% at height penetrating ratio of 0.3, 0.7 and 1.0, respectively in shear strength. Meanwhile, for samples of 9% area replacement ratio, the shear strength of the soft kaolin clay increased about 14.29, 28.57 and 57.14%, respectively. It can be concluded that by reinforcing the soft clay using singular bottom ash column, the shear strength of the soils increases and become more significant as the area replacement ratios and the column penetration ratios increase.","PeriodicalId":517800,"journal":{"name":"CONSTRUCTION","volume":"13 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141005686","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: 1

Recycling of Oil Palm Shell as Aggregate in Concrete: A Review 回收利用油棕壳作为混凝土中的骨料：综述

CONSTRUCTION Pub Date : 2024-03-13 DOI: 10.15282/construction.v4i1.10176

Norasyimah Ahmad @ Mohd Din, K. Muthusamy, R. Embong, L. Krishnaraj

引用次数: 0

Water Quality Evaluation of Tigris River by using Canadian and Horton Water Quality Index 利用加拿大和霍顿水质指数评估底格里斯河水质

CONSTRUCTION Pub Date : 2024-03-13 DOI: 10.15282/construction.v4i1.9748

Zainab Altemimi, Mohammed Al-Juhaishi

{"title":"Water Quality Evaluation of Tigris River by using Canadian and Horton Water Quality Index","authors":"Zainab Altemimi, Mohammed Al-Juhaishi","doi":"10.15282/construction.v4i1.9748","DOIUrl":"https://doi.org/10.15282/construction.v4i1.9748","url":null,"abstract":"Water quality index (WQI) is a simplified and explicable number calcuated from data on tested prameters in water. In this study, two methods for calculating water quality index (WQI) were used to assess the water quality of Tigris River using monthly data from 2011 to 2013. The data were collected at four different gauging stations. Two gauing stations are located on Tigris River at upstream in Mosul city while the other two downstream gauging stations are located on Tigris River at downstream in Al-Amarah city. The Canadian Council of Ministers of the Environment’s (CCME WQI) and Horton (Horton’s WQI) methods were applied to assess the water quality of Tigris River at the selected stations. The data used in the assessment included several parameters such as calcium (Ca), magnesium (Mg), sodium (Na), potassium (K), chloride (Cl), sulfate (SO4), bicarbonate (HCO3), nitrate (NO3), total dissolved solid (TDS), biochemical oxygen demand (BOD5) and electric conductivity (EC). According to the values of CCME WQI mehod, the quality of Tigris River in Mosul city was at a good level (the values of WQI were varied from 83 to 94) while it and falls under the marginal category in Al-Amarah city (the values were varied from varied from 52 to 59). However, the application of Horton’s WQI method showed that the quality of Tigris River in Mosul city was fluctuated from excellent to good (values of WQI varied from 24 to 80 per month) while it was poor in Al-Amarah city (values of WQI varied from 74 to 160 per month). In conclusion, the Horton’s WQI method was found more relastic when used to assess the water quality of Tigris River compared with CCME WQI method.","PeriodicalId":517800,"journal":{"name":"CONSTRUCTION","volume":"87 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140393738","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

Use of Seashell as Cement Replacement in Construction Material: A Review 在建筑材料中使用贝壳作为水泥替代品：综述

CONSTRUCTION Pub Date : 2024-03-03 DOI: 10.15282/construction.v4i1.10001

Sofia Adibah Jasni, K. Muthusamy, Hanis Nadiah Ruslan, Hussein Hamada, Ezahtul Shahreen Ab Wahab

{"title":"Use of Seashell as Cement Replacement in Construction Material: A Review","authors":"Sofia Adibah Jasni, K. Muthusamy, Hanis Nadiah Ruslan, Hussein Hamada, Ezahtul Shahreen Ab Wahab","doi":"10.15282/construction.v4i1.10001","DOIUrl":"https://doi.org/10.15282/construction.v4i1.10001","url":null,"abstract":"Growing construction industry boost cement manufacturing industry which consume a large amount of natural resources and releases greenhouse gases during cement production affects the environment. A lot of researchers attempt to find alternatives in integrating waste into concrete mixes and can be reused in cementitious construction material. Seashells are one of the waste materials that would give harm to their own biodiversity as it would occupy the landfills and seashores. Seashell is known to be very hard and protective on the outer layer produced by an animal that lives in the sea. This review paper is focused in using seashells as cement replacements in construction material. This academic review paper examines the potential of utilizing seashells, including various types such as a cockle, clam, oyster, and scallop as a sustainable and environmentally beneficial alternative to traditional usage in construction. By exploring the practical applications and economic viability of seashell-based concrete, this research aims to contribute to the broader discourse on eco-friendly construction practices and sustainable resources utilization in the construction industry.","PeriodicalId":517800,"journal":{"name":"CONSTRUCTION","volume":"20 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140397978","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

Electronic Submission in Construction: Government Approval Practice and Potential Issues in Malaysia 建筑业的电子提交：马来西亚的政府审批做法和潜在问题

CONSTRUCTION Pub Date : 2024-03-03 DOI: 10.15282/construction.v4i1.9890

Nurillya Zahimi, Abdelrahman M. Farouk, Saffuan Wan Ahmad, Rahimi A. Rahman

{"title":"Electronic Submission in Construction: Government Approval Practice and Potential Issues in Malaysia","authors":"Nurillya Zahimi, Abdelrahman M. Farouk, Saffuan Wan Ahmad, Rahimi A. Rahman","doi":"10.15282/construction.v4i1.9890","DOIUrl":"https://doi.org/10.15282/construction.v4i1.9890","url":null,"abstract":"Post-COVID-19 has strongly impacted the construction industry worldwide; many parties took alternatives to facilitate the relatively overdue work arrangements. The Malaysian construction industry has been directly affected and has had to increase the adoption of One-Stop Centre (OSC) electronic submissions. According to the Malaysian online system submission policies, it is necessary to obtain construction approval from the OSC through the implementation by town councils. Not understanding the process and documents involved in this procedure might result in ineffective submissions. Hence, the study objectives are to identify: 1) The current submission process and documents for construction approval to town councils, and 2) Issues related to the e-submission process. Semi-structured interviews were conducted with individuals from twenty town (20) city councils in Malaysia to achieve those objectives. The results indicate that the general process includes submitting the required documents through the OSC, validation of submittals, and meeting approvals. The required documents include planning permissions, drawings, engineering plans, environmental management plans, landowner documents, and approvals by other government agencies. Finally, the issues with the e-submission include technical problems and the lack of experience of all involved stakeholders. These findings can be used by policymakers to improve the submission system and industry practitioners in acquiring construction approvals.","PeriodicalId":517800,"journal":{"name":"CONSTRUCTION","volume":"78 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140286137","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

Effect of Mega Railway Projects on Small and Medium Construction Companies: Impact and Problems 大型铁路项目对中小型建筑公司的影响：影响与问题

CONSTRUCTION Pub Date : 2024-03-03 DOI: 10.15282/construction.v4i1.9891

Nurul Atiqah Ab Hakim, Abdelrahman M. Farouk, Saffuan Wan Ahmad, Rahimi A. Rahman

{"title":"Effect of Mega Railway Projects on Small and Medium Construction Companies: Impact and Problems","authors":"Nurul Atiqah Ab Hakim, Abdelrahman M. Farouk, Saffuan Wan Ahmad, Rahimi A. Rahman","doi":"10.15282/construction.v4i1.9891","DOIUrl":"https://doi.org/10.15282/construction.v4i1.9891","url":null,"abstract":"Railway mega-projects are typically enormous large-scale investment projects that require a long time to develop and build. However, compared to other types of transportation, the railway is a safe mode of land transportation. Therefore, development such as railway mega-projects positively impacts small and medium construction companies. This study aims to study the impact of railway mega-projects on small and medium construction companies and investigate the problems that small and medium construction companies experience involving railway mega-projects. This study used a qualitative method of open-ended interviews to collect data from small and medium construction companies. The collected data from twenty individuals were analyzed using the thematic analysis method. The results show that the challenges of mega railway projects are divided into technical and resources. Apart from that, job opportunities are the main factor contributing to the impact of mega railway projects. The study contributes by providing insights on the impact of mega railway projects on small and medium construction companies and the challenges involving mega railway projects.","PeriodicalId":517800,"journal":{"name":"CONSTRUCTION","volume":"2 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398304","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