Popular Building Research Articles

Analisis Pengaruh Ukuran Maksimum Agregat Kasar Terhadap Kuat Tekan dan Porositas Pada Beton Normal

Concrete is a very popular building material used in the world of construction services, consisting of a mixture of Portland cement (PC) or other hydraulic cement, fine aggregate, coarse aggregate and water, with or without the use of additional materials that form a solid mass. This test is a research study in the laboratory by examining the materials that make up concrete including aggregate sieve analysis testing, water content testing, mud content testing, unit weight testing, aggregate specific gravity testing, coarse aggregate wear testing, slump testing and compressive strength testing, porosity testing, which is carried out according to the SNI method. Based on the results of the research carried out, it was found that the average compressive strength value of concrete for two different types of crushed stone material, for a gradation of 1-2 cm with moramo crushed stone material was 17.94 Mpa and pondidaha material was 18. 41 Mpa. And for a gradation of 2-3 cm, the average compressive strength for moramo crushed stone was 16.90 Mpa, while for pondidaha crushed stone it was 17.46 Mpa

Implementing resilience in sustainable building design: Testing selected resilience criteria in a case study

Abstract Climate change is causing unprecedented changes in precipitation, extreme temperatures, and weather-related threats. Without effective intervention, these changes are expected to escalate in the coming years, potentially causing substantial damage to buildings. Paradoxically, the buildings themselves possess the potential to both exacerbate and alleviate climate change. To achieve a balance, the design of the building must adhere to minimal sustainability standards, taking into account resilience. Popular building rating systems, currently skewed towards sustainability, often neglect resilience principles. This paper aims to assess five selected resilience criteria from a new module incorporated into an existing building certification system, SBToolCZ. Validation occurs through a multi-residential building case study in Prague, evaluating the effectiveness of the criteria in terms of feasibility, accuracy, consistency, and time/data requirements. The results of this criteria test determine the clarity, achievability, and informativeness of the selected criteria. If gathering information and meeting benchmarks within a specific time frame proves challenging, adjustments to the criteria may be necessary for attainability and specificity. Integrating resilience features into sustainability rating systems, typically used in the early stages of design, can encourage designers to incorporate resilience into their projects. This proactive approach could lead to long-term reductions in environmental, social, and economic impacts, especially during weather-related hazards.

Optimal design of a post-demolition autoclaved aerated concrete (AAC) recycling network using a capacitated, multi-period, and multi-stage warehouse location problem

Optimal design of a post-demolition autoclaved aerated concrete (AAC) recycling network using a capacitated, multi-period, and multi-stage warehouse location problem

Visuality peaks, function lasts: an empirical investigation into the performance of iconic architecture on Instagram

PurposeThe purpose of this paper is twofold: first, to propose a methodology to empirically investigate the longitudinal development of social media content concerning buildings characterized by iconic architecture and second, to report on the application of this methodology.Design/methodology/approachWe collected and analyzed empirical data of social media content shared via Instagram between 2011 and 2019 on 16 buildings that can be considered iconic architecture projects. Using an automated pipeline, we collected and processed 264,000 posts and 140,000 images from Instagram for the selected case studies. By studying the posting activity of Instagram users through time series analysis and conducting content analysis of the social media posts by means of both image classification and topic modeling, we report on the development of users’ capturing and reception of the selected case studies on Instagram over time.FindingsFirst, we identify two distinct time patterns of social media content: instantly popular buildings whose popularity fades over time and buildings that gradually gain popularity over time. Second, we distinguish differences in the content of social media posts: some buildings are primarily covered for their architectural features and others for their cultural function and facilities.Originality/valueUsing empirical investigation of Instagram data on iconic architectural projects, we have identified a correlation: buildings primarily posted for their architecture are generally also the ones to gain instant online popularity that subsequently faded over time. In contrast, buildings primarily posted for their function and facilities slowly gained popularity on the social media platform over time.

Bond performance of reinforcing bars in fly ash-based engineered geopolymer composites under uniform and nonuniform corrosion conditions

Bond performance of reinforcing bars in fly ash-based engineered geopolymer composites under uniform and nonuniform corrosion conditions

Role of ion-beam current and energy for nano-scale joining of copper nanowires: Experimental and theoretical study

Role of ion-beam current and energy for nano-scale joining of copper nanowires: Experimental and theoretical study

The Effect of Cellulose Fiber on the Bending Strength of Autoclaved Aerated Concrete

Autoclaved aerated concrete is becoming an increasingly popular building material, and for good reason. It is ecological, energy efficient, strong, and durable. Studies show that the production of autoclaved aerated concrete saves 85% of energy compared to the production of heavy concrete. However, the use of steel reinforcement in large-sized aerated concrete products leads to deterioration of thermal insulation properties, corrosion, and destruction of the material. Replacing steel reinforcement with discrete fiber strands can solve this problem. The fiber does not affect the thermal insulation properties, is not prone to corrosion, and can be evenly distributed over the entire volume of the product.

Enhancing BIM Integration: A Comparative Analysis of Novel Composite Structure Documentation Methods

The proper selection and planning of building materials are crucial tasks in architectural design, as they fundamentally impact the functioning of the structure. In traditional design processes, this information is recorded in text form, typically using word processing software. However, this approach hinders the integration with modern, data-driven design methods and is incompatible with the increasingly popular building information modeling (BIM) processes. To address this, two new methods have been developed: one database-like method in the form of an Excel spreadsheet and the other as a dedicated web application. This article introduces and compares these methods based on pilot projects conducted by university students and an expert. Based on the results of the study conducted among students and expert, the database-like method proves to be the fastest. For students, creating a composite structure took an average of 14–20 min, while for experts, it took an average of 1.2 min. According to the evaluation of participants, the traditional method does not facilitate automatic communication with BIM, while both the database and web solutions promote it. The web-based solution, with its dedicated layout and functionality, offers additional advantages in this regard. The research underscores the importance of structured data in BIM and proposes new methods to streamline composite documentation processes during the design phase.

Strength Assessment of RCC Beam With Partial Replacement of Metakaolin and Marble Dust

The most popular and adaptable building material is concrete, which is typically used to withstand compressive stress. A few pozzolanic elements can be added as admixtures to improve the various qualities of concrete. Calcified clay, or metakaolin, is widely accessible in Gujarat, Maharashtra, Bombay, and other places. It is the clay mineral kaolinite in a dehydroxylated state. Metakaolin particles are smaller than cement particles in size. Marble dust is produced by the industries that cut and manufacture marble. Approximately 3500 metric tons of marble dust slurry is produced daily in India. Therefore, marble dust may be found extremely cheaply and simply. Because marble dust has some advantages over cement, it is recommended to utilize it in part. The current study details an experimental program designed to explore the flexural behavior of reinforced concrete beams where river sand was partially replaced with marble powder in preparation for concrete and metakaolin was used in place of some of the cement. In this work, partial cement replacement has been carried out using MK (Metakaolin) at 5% and 10% and MP (Marble Powder) at 5%, 10%, 15%, and 20%. Concrete manufactured with MK-MP has been compared to conventional concrete of grade M30 in terms of both compressive and tensile strength. The Rapid Chloride Migration Test, or RCMT, was also used to examine the durability of concrete.

The Possibilities of the Actual Orientation of the Green Building in Iraq

This research covers the zone between Iraq and Iran. The first investigated region is the 'Mesopotamian Marshes' or Iraqi-Iran Marshes, it's a wetland zone located in southern Iraq and partly in southwestern Iran. The other region is a desert district which includes a prominent part of the southern and western parts of Iraq and part of Iran. The last is the center city of Basra. The building materials were the most important building element that affected the conformation of vernacular habitats In this study, we needed to focus on the effects of ecological and energy-efficiency processes in creating vernacular habitats and the selection of optimal building systems and materials in this part of the world which can be an essential point for sustainable environmental building processes in the future. Reeds, clay, straw, bricks, and wood were the most popular building materials used by builders from this region. The impact of building material on the environment embodies the essential method implicitly significant in this research to effectively determine traditional building materials in the environment in addition to comparative analysis which presents an essential factor of our analysis in addition to the impact of environments on building systems. The main target of this study is to benefit designers and building engineers in their pursuit to find optimal and competent solutions suitable for specific local microclimates using traditional methods in the design process that are sustainable and ecological.

From Pagoda to Pavilion: The Transition of Spatial Logic and Visual Experience of Multi-Story Buddhist Buildings in Medieval China

Pagodas and pavilions (ge 閣) are the most popular and representative multi-story buildings since Buddhism was introduced to China. While providing visitors with a new visual experience, they have also largely reshaped the urban space and skyline in medieval China. The former originated from India and Central Asia and was transformed in China, developing a unique style; The latter originated more from the creation of Chinese architects and became a model of typical Chinese-style Buddhist architecture. Briefly, the pagoda matured earlier than the pavilion, and continuously developed while maintaining its basic style; the pavilion-style Buddhist architecture gradually developed later and finally matured after the Tang and Song dynasties (618–1276), partially presenting a different spatial logic from the pagoda, and bringing a new visual experience. In my opinion, although the pavilion may not necessarily be as large as the pagoda in terms of volume and absolute height, it can provide believers with greater visual impact in the internal space for worship, due to the cross-story giant Buddhist statues; the closer integration of Buddha statues and architecture makes it replace or share the core position of the pagoda in some monasteries and even become the visual center of the entire religious space. Due to the existence of the pavilion, viewers can not only worship the Buddhist statues on a two-dimensional plane or by looking up at the statues from the bottom, but have also gained a three-dimensional perspective, to worship directly at the Buddha’s shoulders, neck, and head. In the Buddhist grottoes, the layout of the early single-layer or multi-layer horizontally distribution of caves on cliff was also changed due to the excavation of the cross-layer giant statue grottoes, covered by multi-story pavilion-style buildings, providing viewers with a visual experience similar to that of the pavilions of great statues. Additionally, there is a new visual experience of worshiping the Buddha in a vertical circle, in cases such as Bamiyan and the Leshan Giant Buddha.

Experimental testing of spliced glulam joints for large-span timber structures

Experimental testing of spliced glulam joints for large-span timber structures

СЛІДИ ТВАРИН НА ЦЕГЛІ МЕДЖИБІЗЬКОГО ЗАМКУ

Occasional marks on bricks or other architectonic composites, with their potential to unveil environmental conditions at the time of their formation, attract scientific attention. The object of our research is the pawprints on bricks, a discovery made during the archaeological excavations of the historically significant Medzhybizh Castle (also known as Medzhybizh Fortress), located in the village of Medzhybizh, Khmelnytskyi region, Ukraine. Brick, a popular building material, was continually used to construct palaces and residential and household objects of the Castle’s architectural ensemble. The studied collection of bricks, dating to the 15th-19th centuries, is the second most widespread material, after stone blocks, for constructing various elements of the Castle complex. This study aims to identify the animal species responsible for the pawprints found and showcase the valuable informational potential of animal pawprints on bricks as an archaeological resource. The findings of the study reveal that the imprints can be attributed to canines, felines, swine, even-toed ungulates, and domestic fowl (chickens). Animal tracks present on the brick blanks indirectly reflect the environmental elements. In the context of the brick materials utilized in the construction of Medzhybizh Castle, the animal imprints indicate the presence of animals associated with the proprietors of the brickyard or those from neighbouring households and farms. Animals could have unintentionally traversed the brick blanks while roaming freely, possibly attracted by the mineral components of the brick mortar. The dimensions of a dog’s pawprints enable an estimation of the size of certain individual dogs and their count. The small size of the hoofed mammal`s tracks suggests they belonged to young individuals, indicating the spring-summer season during which the brick blanks were created. The positioning of the tracks on the brick provides insights into the speed patterns of the animals’ movements on the blanks. Therefore,the results of the pawprint study on bricks and other ancient ceramic products not only contribute to our understanding of the past but also have practical applications in the scientific and museological spheres, making this research highly relevant and its applications tangible.

Upper rim-bridged calixarenes.

Calix[n]arenes represent a very attractive family of macrocyclic compounds with many potential supramolecular applications. Due to their well-established chemistry and many different synthetic strategies, enabling practically any derivatization of the basic skeleton, calixarenes are among the very popular building blocks used for the design and construction of various receptors, sensors and other sophisticated supramolecular systems. Regio- and/or stereo-selective derivatization of calixarenes currently represents a very extensive set of reactions, the overview of which would fill many thick books. Therefore, this review deals with only a small part of the above-mentioned reactions, specifically describes possible ways of bridging the upper rim of calixarenes, often leading to interesting rigidified structures, and also briefly mentions the potential use of these compounds.

Agricultural Research and Development Center Design with Building Integrated Photovoltaics in Fiji

Building-integrated photovoltaics (BIPVs) entail the use of photovoltaics as building materials, such as windows, roofs, and walls. Owing to their electricity-generation ability, BIPVs have become popular building materials for green buildings. This study involves an economic feasibility analysis of BIPVs for an agricultural research and development center in Fiji. The computerized relative allocation of facilities technique (CRAFT) is extended for cost-efficient facility design, and the levelized cost of electricity (LCOE) of BIPVs is evaluated to identify feasible alternatives from among three options, namely roof-integrated, window, and rooftop BIPVs. From the experiments, the LCOE values of the roof-integrated, window, and rooftop BIPVs were USD 0.13/kWh, 0.17/kWh, and 0.09/kWh, respectively. Moreover, the profit for the window BIPV was negative when the discount rate was greater than 0.08 due to its inefficient productivity. Contrarily, the roof-integrated BIPV showed a reasonable LCOE even though it required the highest investment cost. Nevertheless, further efforts are needed to reduce the cost of BIPVs for practical implementation.

Exploring the user guidance for more accurate building segmentation from high-resolution remote sensing images

Exploring the user guidance for more accurate building segmentation from high-resolution remote sensing images

A timeless journey of strength and beauty: The potentials of the use of stone in architecture

Use of stone in architecture has been an enduring and timeless tradition throughout history, withstanding the test of time from ancient civilizations to today’s architecture. The durability, versatility and aesthetic appeal of stone make it an exceptional material for creating striking architectural designs. Stone has been used for centuries, as an integral part of architecture since ancient times and its importance still holds true in contemporary architecture being a popular building material today. In this context, this study examines the key features of stone that make it such a vital material for architectural design by exploring the advantages and disadvantages of using stone for architecture. The paper examines the role of stone in architecture and explores how contemporary projects have utilized stone in innovative and creative ways also delves into the significance and beauty of stone architecture, highlighting its history, durability and aesthetic appeal. The research methodology includes the analysis of case studies of contemporary projects crafted from stone, examining the design process, materials and techniques used. The case studies analyzed in this paper demonstrate the versatility of stone in contemporary architecture. The projects showcase how stone can be used in innovative ways, including the creation of sculptural forms, the incorporation of technology and the utilization of sustainable materials. The paper argues that stone's timeless qualities, durability and versatility make it an ideal material for contemporary architecture, particularly in achieving sustainability and aesthetic appeal. The study concludes that the use of stone in architecture remains crucial in creating robust, sustainable and attractive structures that stand the test of time.

Analysis of properties of self-healing concrete using bacteria and self-healing concrete utilising crystalline admixture

One of the most popular and indispensable building materials is concrete. It often develops microscopic fissures that could eventually grow larger. Members start to deteriorate as a result of this. By including specific components, self-healing concrete can be utilised to repair cracks on its own. The two forms of self-healing concrete used in this study. Those prepared with cystalline admixture and those made with Bacillus subtilis bacteria. Properties of the two concrete are compared, and their potential for healing is assessed. 1% ,2% and 3% of crystalline admixture are added to the specimens whereas 5% , 10% and 20% crystalline admixtures are added to the specimen. Cracks are induced into each percentage for the analysis of healing of the casted concrete specimens.

Ultrathin, Cationic Covalent Organic Nanosheets for Enhanced CO2 Electroreduction to Methanol.

Metalloporphyrins and metallophthalocyanines emerge as popular building blocks to develop covalent organic nanosheets (CONs) for CO2 reduction reaction (CO2RR). However, existing CONs predominantly yield CO, posing a challenge in achieving efficient methanol production through multielectron reduction. Here, ultrathin, cationic, and cobalt-phthalocyanine-based CONs (iminium-CONs) are reported for electrochemical CO2-to-CH3OH conversion. The integration of quaternary iminium groups enables the formation of ultrathin morphology with uniformly anchored cobalt active sites, which are pivotal for facilitating rapid multielectron transfer. Moreover, the cationic iminium-CONs exhibit a lower activity for hydrogen evolution side reaction. Consequently, iminium-CONs manifest significantly enhanced selectivity for methanol production, as evidenced by a remarkable 711% and 270% improvement in methanol partial current density (jCH3OH) compared to pristine CoTAPc and neutral imine-CONs, respectively. Under optimized conditions, iminium-CONs deliver a high jCH3OH of 91.7 mA cm-2 at -0.78 V in a flow cell. Further, iminium-CONs achieve a global methanol Faradaic efficiency (FECH3OH) of 54% in a tandem device. Thanks to the single-site feature, the methanol is produced without the concurrent generation of other liquid byproducts. This work underscores the potential of cationic covalent organic nanosheets as a compelling platform for electrochemical six-electron reduction of CO2 to methanol.

Synthesis of nano Fe2O3 cement compositions for concrete shielding

Synthesis of nano Fe2O3 cement compositions for concrete shielding