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Risky Ayu Kristanti
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Civil and Sustainable Urban Engineering
Published by Tecno Scientifica
ISSN : -     EISSN : 28089200     DOI : https://doi.org/10.53623/csue.v1i1
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Transportation
The journal is intended to provide a platform for research communities from different disciplines to disseminate, exchange and communicate all aspects of basic and applied research involving three important divisions of Civil Engineering, Construction Management and Urban Engineering. The journal will focus on the dissemination of knowledge on both theoretical aspects and practical applications. It would be the platform for the diffusion of new and innovative methods, tools, techniques, technologies, and applications in different disciplines. Topics of specific interest include, but not limited to, are: Civil Engineering: Structure Engineering, Dynamics of Structures, Materials, Infrastructure Engineering, Geotechnical Engineering, Water Resources and Hydraulic Engineering. Construction Management: Project Management Planning, Cost Management, Time Management, Contract Administration, Safety Management, CM Professional Practice, construction materials and management, energy efficiency, energy in buildings, Sustainable Infrastructures, Sustainable Design & Construction, Building Information Modeling (BIM), Concrete Technology and Waste Research. Urban Engineering: Urban transportation, smart cities, Transportation planning, Sustainable transportation, active transportation, transport policy and applied soft computing for sustainable transportation.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 60 Documents
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Implementation of Green Materials in Construction Management System in Malaysia Chong, Jia Hao; Liu, Madelyn Shiu; Hernandes, Erika; Albescu, Mihaela
Civil and Sustainable Urban Engineering Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i1.212

Abstract

Construction industry plays an important role in social, economic and environmental developments. However, the unstainable development in the industry has led to environmental issues. Construction waste is one of the biggest problems in the construction industry. In Malaysia, construction waste constitutes a large portion of solid waste every year. Most of the construction waste ends up in landfill without proper treatment. The constriction waste can further lead to other environmental issues. In addition, construction activities have also led to environmental issues such as water pollution, air pollution and noise pollution in the country. Besides, utilization of conventional construction materials in the country also leads to unstainable development in the industry. Conventional concrete is the most used construction material and also the most generated construction waste in a construction project. The production of conventional concrete emits a huge amount of carbon dioxide (CO2) (due to the use of cement), which accounts for 8% to 10% of global anthropogenic CO2 emissions every year. Thus, environmental management practices and utilization of green materials can be the keys to achieve sustainable development in the Malaysian construction industry.
Evaluating the Clogging Phenomenon in Pervious Concrete from January 2015 to December 2022 Teymouri, Ehsan; Wong, Kwong Soon; Rouhbakhsh, Masoud; Pahlevani, Mahdi; Forouzan, Mehdi
Civil and Sustainable Urban Engineering Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i1.236

Abstract

This study investigated the effects of clogging in Pervious Concrete (PC) from January 2015 to December 2022. Three different PC mixtures were used, which included coarse aggregate (4.75-9.5 mm), fine aggregate (0-20% weight of coarse aggregate), cement (340 kg/m3), and w/c ratio of 0.35. The samples were tested for compressive strength, permeability, and porosity. The best PC mixture containing 10% fine aggregate was selected for monitoring clogging over time. This mixture had a compressive strength of 24.7 MPa, permeability of 1.19 mm/s, and void content of 13.96%. A large-scale prototype of PC10 (10% of fine aggregate) measuring 3.5 m in length, 1.7 m in width, and 0.20 m in depth was constructed in Mashhad City, Iran. The in-place infiltration rate was measured on a monthly basis as the PC experienced different rainfall levels. The results showed that due to clogging, the infiltration rate was reduced by an average of 10% for the first four years of the experiments. This was followed by a substantial reduction of 20% in 2019 and 16.75% in 2020. Due to a high level of clogging, the infiltration rate was reduced by 5.02% and 2.23% in 2021 and 2022, respectively. However, the system still has the capacity to infiltrate at 1.14 mm/s. Although no maintenance was performed on the PC system, its efficiency and lifespan were substantially reduced. Nonetheless, the system can still be considered as an effective solution for stormwater management.
Development of Cement Stabilised Compressed Blocks Using Coal Bottom Ash: Influence of the Grain Size on Mechanical and Physical Properties of Blocks Minane, Jacques Remy; Lawane, Abdou; Madjadoumbaye, Jeremie; Vinai, Raffaele; Zagré, Brice
Civil and Sustainable Urban Engineering Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i1.242

Abstract

This study investigated the physical and mechanical properties of cement-stabilized compressed blocks manufactured with coal bottom ash sourced from a power plant in Niger. Three different grain sizes were used for the production of compressed blocks with a hand-operated press. Thermal, hydric, mechanical, and fire resistance properties were assessed on the samples. It was found that the use of finer bottom ash resulted in lighter blocks with a density of about 1.02 mg/m3 and thermal conductivity in the range of 0.27 – 0.41 W/m·K. The size of the bottom ash used for the production of blocks did not significantly affect the value of mechanical strength. The exposure of blocks to temperatures of 200°C and 400°C did not reduce the strength of the samples. Neat bottom ash blocks can offer better thermal properties than typical building materials and provide acceptable mechanical strength.
Analysis of Sustainable Energy Metrics in Douala’s Road Transportation Sector, Cameroon Bissai, Fontaine Dubois; Mbanga, Bienvenu Gaël Fouda Fouda; Adiang Mezoue, Cyrille; Nguiya, Severin
Civil and Sustainable Urban Engineering Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i1.250

Abstract

In this study, Douala, Cameroon was used as a case study to analyze the characteristics of sustainable energy for road transport from 2010 to 2019. Douala, being the national capital and entry point to Central Africa, served as a major hub for the movement of people and goods. However, the road transport sector was plagued by a number of problems, including traffic congestion, the use of fossil fuels, air pollution, and global warming associated with road traffic. The objective of this work was to evaluate a set of indicators that would allow monitoring the evolution of trends in the interactions between the energy component and sustainable development. The DPSIR (Driving Force, Pressure, State, Impact, and Response) model was used to select a set of indicators. According to the results, the energy intensity of the fuel used for transport decreased from 9.93 to 15.9 toe/M€. This increase in energy intensity reflected the energy-intensive nature of the road industry. Additionally, from 2010 to 2019, the energy efficiency of road transport vehicles in the city of Douala fluctuated between 20 and 22%. This indicates a significant potential for improving energy efficiency. Therefore, decision-makers need to implement sustainable transport planning to address these issues.
Inhibitors to Earth-based Materials Adoption in Urban Housing Construction: The View of Design Experts Nwaki, William; Sofolahan, Onyinye; Eze, Emmanuel
Civil and Sustainable Urban Engineering Volume 3 - Issue 2 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i2.329

Abstract

Earth-based materials are eco-friendly and harmless to the environment but have been neglected and relegated, and preference is given to non-sustainable and expensive conventional materials owing to certain factors. Existing studies in the Nigerian context did not consider the factors hindering the use of earthen materials in urban low-cost housing production. This study presents the outcome of examining the inhibitors to the adoption of earth-based materials in urban housing construction from the perspective of design experts in a developing country like Nigeria. Thus, it fills the critical literature gap in the Nigerian context. A well-structured quantitative questionnaire was utilised to collect data from construction design experts using the snowball sampling technique via electronic means. With a reliability index of 0.899, The gathered data were analysed using frequencies, percentages, Mean score, normalisation value technique, Mann-Whitney U test, overlap analysis, and exploratory factor analysis (EFA). It was found that the major barriers to the use of earth materials in urban housing production are (i) image and aesthetic barriers, (ii) Knowledge and resistance barriers, (iii) technology and data barriers, (iv) strength and maintenance barriers, and (v) demand and demographic barriers. More training and workshops were advocated to increase knowledge of the environmental and economic benefits of these materials among stakeholders to influence their interest and the market for earthen materials' acceptability and usage in housing production in urban areas.
Sustainable Urban Development in Malaysia: Enhancing Green Roofs with Integrated Technologies Tang, Yien Yu; Slimani, Youcef; Al-Ghazal, Mukhtar Ali; Talukdar, Gaurav; Maharjan, Amit Kumar
Civil and Sustainable Urban Engineering Volume 3 - Issue 2 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i2.335

Abstract

Urbanization and population density surges globally have triggered environmental challenges, with the construction sector notably contributing to greenhouse gas emissions and high energy consumption. Urban expansion has exacerbated issues, converting green spaces into impermeable structures and heightening flood risks. Green roofs have emerged as an eco-friendly solution, excelling in stormwater management, mitigating the urban heat island effect, enhancing air quality, reducing noise transmission, preserving biodiversity, extending roof lifespan, and augmenting aesthetics. They absorb rainwater, decreasing stormwater runoff, yet entail higher installation and maintenance costs and potential fire hazards compared to conventional roofs. In Malaysia, government policies and incentives drive green roof adoption, particularly in residential, commercial, and institutional buildings, predominantly of the intensive green roof type. Buildings undergo green rating tool evaluations for green certification. Despite progress, challenges persist, including expertise shortages, lack of design guidelines, limited research, low public awareness, and green roof component disposal issues. Addressing these demands significant government efforts, including robust policy development, increased support for local companies, expanded research initiatives, heightened public awareness, and optimized synergy with other technologies. Integrating green roofs with solar panels and utilizing greywater for irrigation can reduce energy and water consumption concurrently, showcasing potential for comprehensive and sustainable urban development.
Environmental Management and Green Practices in the Construction Industry Across ASEAN Countries: A Comparative Study Tie, Sing Yi; Emre, Mehmet; Bennani, Chafiq; Garcia, Sebastian; Talukdar, Gaurav; Maharjan, Rabin
Civil and Sustainable Urban Engineering Volume 3 - Issue 2 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i2.336

Abstract

The construction industry in Southeast Asian countries especially Association of Southeast Asian Nations receive substantial attention and investment for the high return value of the industry. This review aims to assess the environmental impact of the construction industry in ASEAN countries, analyzing current status, government policies, and innovative green materials and technologies to mitigate environmental effects and promote sustainability. It is important to note that construction industry is currently identified as one of the greatest waste production businesses which can cause adverse impacts and pollution to the environment that degrade the environmental quality. Construction and demolition wastes are emphasized and studied in the following context. The status and government policy on environmental management practices in ASEAN countries such as Malaysia, Vietnam and Singapore are reviewed and summarised in this article. Furthermore, green construction materials and green material technologies that are practised in ASEAN countries are examined throughout the study. The green materials include bamboo, recycled concrete aggregate, coconut husk and bagasse while the green material technologies include hydrogen energy, carbon capture and storage, and solar energy are discussed and evaluated with respective advantage and disadvantages.
Navigating Soil Erosion Challenges in Malaysia: Insights, Prospects, and Solutions Chin, Edenver; Maharjan, Rabin; Emalya, Nikita
Civil and Sustainable Urban Engineering Volume 3 - Issue 2 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i2.339

Abstract

The escalating global demand for forest products, driven by economic growth and a growing population, has led to increased forest conversion activities. Forest conversion involves transforming forested areas to meet industrial demands, resulting in severe ecological consequences. This review focuses on the state of soil erosion practices in Malaysia, which is a pressing issue with wide-ranging impacts on soil health, agricultural sustainability, and the environment. Malaysia's geographical location exposes it to the El Nino phenomenon, characterized by disrupted climate patterns and altered rainfall intensities, indirectly contributing to soil erosion. During El Nino events, diminished vegetation cover, primarily due to rainfall deficits, increases soil susceptibility to erosion, emphasizing the need for adaptive erosion control measures. Soil erosion poses a significant challenge to the sustainability of agriculture and terrestrial ecosystems. Malaysia has made efforts to address this issue by implementing soil and water conservation practices like terraces, grassed waterways, strip cropping, and conservation tillage, which effectively reduce erosion rates. However, these methods face challenges due to the variations in natural erosion rates driven by extreme events. Additionally, the conversion of natural forests to economic forests remains an underexplored concern in Malaysia, hindering the development of tailored soil erosion control strategies. Addressing soil erosion demands a comprehensive approach that includes research, policy support, and empowering farmers to adopt soil conservation practices. Soil erosion affects ecosystems, water resources, and urban development, necessitating multifaceted solutions to preserve both environmental sustainability and agricultural productivity in the face of evolving environmental challenges.
Behaviour of Reinforced Concrete Slabs with Embedded Polystyrene Spheres Ling, Jen Hua; Lau, Ji Wei; Lim, Yong Tat
Civil and Sustainable Urban Engineering Volume 4 - Issue 1 - 2024
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v4i1.391

Abstract

Polystyrene spheres can be used to substitute concrete in reinforced concrete slabs. Despite the weight, the structural performance of the slab would also be affected. This study investigated the behaviour of slabs containing polystyrene spheres under loads. Six specimens were fabricated and tested under the four-point load setup. The parameters studied included the diameters of the polystyrene spheres and the spacing between them. The polystyrene spheres reduced the slabs’ first crack load, stiffness, yield strength, and ultimate strength. The first crack, yield, and ultimate loads decreased by 22.3%, 2.1%, and 4.1%, respectively, when the polystyrene sphere’s diameter increased from 75 mm to 125 mm. As the polystyrene spheres’ spacing decreased from 50 mm to 10 mm, the first crack, yield, and ultimate loads dropped 14.2%, 9.2%, and 7%, respectively. Despite some limitations identified during the feasibility analysis, specimen SP3 was found feasible as a simply supported one-way spanning slab. In the specimen, the polystyrene spheres were 0.625 times the slab thickness in diameter and 2.5 times the concrete cover in spacing.
Performance of Grouted Splice Sleeve as A Connection for Wall Panels Ling, Jen Hua; Abd. Rahman, Ahmad Baharuddin; Ibrahim, Izni Syahrizal
Civil and Sustainable Urban Engineering Volume 4 - Issue 1 - 2024
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v4i1.393

Abstract

A grouted sleeve is a mechanical coupler used to join steel bars. It can be used to join precast concrete walls. Most grouted sleeves are pricey proprietary products. This study investigated the behaviour of a grouted sleeve made of steel pipe sections. The grouted sleeve was used as a wall panel connection. The specimens were subjected to three types of loads: tensile, shear, and flexural. The performance of the specimens was evaluated based on the load-displacement responses. For satisfactory bond strength, a bar embedded length of 11 times the bar diameter was required. The grouted sleeve performed well in tension but poorly in shear load. The service shear load was just one-third of the total load capacity. Thus, the grouted sleeve was not recommended for resisting shear load without shear keys to strengthen the joint.

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