scholarly journals Assessment of the Thermal Behaviour of Rammed Earth Walls in the Summer Period

2019 ◽  
Vol 11 (7) ◽  
pp. 1924 ◽  
Author(s):  
Laura Balaguer ◽  
Fernando Vegas López-Manzanares ◽  
Camilla Mileto ◽  
Lidia García-Soriano
Keyword(s):  
Thermal Behaviour ◽  
Climatic Factors ◽  
Vernacular Architecture ◽  
Thermal Inertia ◽  
Rammed Earth ◽  
Real Performance ◽  
The Difference ◽  
Earthen Architecture ◽  
Earth Walls

The constructive solutions characteristic of vernacular architecture are the result of the convergence of geographical, cultural and climatic factors that bring about constructions characterised by adaptation to their surroundings. However, at present, Spanish regulations do not contemplate the properties of traditional materials, such as those found in earthen constructions, whose great thermal inertia is ignored despite their thermal gains and compensations. Given these limitations, the purpose of this study is to assess the thermal behaviour of traditional earthen architecture adjusting to its real performance and original surroundings. This work thus examines a methodology to assess the thermal behaviour of rammed earth walls based on on-site data specifically collected in the summer in a case study located in La Serranía, a region in the northwest of the province of Valencia (Spain). The results show the evolution of exterior and interior surface temperatures of the earthen wall, quantifying its variation frequency and thermal energy transmission. Based on these data, the thermal transmittance of the wall is calculated and compared to highlight the difference from the normalised value, showing that a review of the Spanish regulations applied to earthen architecture is needed.

scholarly journals Is the Sri Lankan ecotourism industry threatened by climate change? A case study of Rekawa coastal wetland using contingent visitation approach

2019 ◽  
Vol 25 (3) ◽  
pp. 226-243
Author(s):  
Nesha Dushani Salpage ◽  
Margrethe Aanesen ◽  
Oscar Amarasinghe
Keyword(s):  
Climate Change ◽  
At Risk ◽  
Coastal Wetland ◽  
Climatic Factors ◽  
Demographic Characteristics ◽  
Sri Lankan ◽  
Environmental Index ◽  
Adaptation Measures ◽  
The Difference

AbstractThis study investigates intended visitation behavior of tourists toward Rekawa wetland under anticipated climate change (CC) scenarios. An interview-based contingent visitation survey was conducted with 365 foreign and domestic tourists to estimate the effects of CC on future visitation. Based on two IPCC scenarios using two direct and three indirect climatic factors, we composed a CC environmental index. The results show a decline in number of trips equal to 43 per cent and 53 per cent under scenarios 1 and 2 respectively, but the difference is not significant. Foreign and domestic tourists differ significantly with regard to socio-demographic characteristics and beliefs about CC effects at Rekawa. Controlling for such differences, we demonstrate that foreign tourists are less likely than domestic tourists to reduce future visitation to Rekawa due to CC impacts. Still, the future of ecotourism at Rekawa wetland is at risk if adaptation measures are not taken to meet CC impacts.

scholarly journals The thermal behavior of rammed earth wall in traditional house in Vojvodina: Thermal mass as a key element for thermal comfort

2018 ◽  
Vol 22 (Suppl. 4) ◽  
pp. 1143-1155
Author(s):  
Vesna Lovec ◽  
Milica Jovanovic-Popovic ◽  
Branislav Zivkovic
Keyword(s):  
Thermal Conductivity ◽  
Thermal Behaviour ◽  
Mass Effect ◽  
High Heat ◽  
Rammed Earth ◽  
Thermal Mass ◽  
Building Stock ◽  
Rammed Earth Wall ◽  
Earth Walls

The conducted research examines the thermal behaviour of the rammed earth walls, which is the basic structural and fa?ade element of traditional Vojvodina house. The traditional rammed earth house represents an important part of the total building stock of Vojvodina. Earth is a locally available, cheap, natural, environmentally friendly building material and has been used extensively for traditional family houses in Vojvodina. It has ecological and ?green? characteristics, which can be assessed as very high quality, and they are of significant importance in the context of sustainable development and striving to reduce energy consumption today. The research examines thermal behaviour of rammed earth wall, including theoretical analysis of: the heat transfer coefficient, U, the thermal resistance, R, and thermal conductivity, ?. One of the basic elements of thermal behaviour, the thermal mass, has been analyzed both theoretically and by measuring in situ. The in situ measurements were conducted on the traditional house in Vojvodina by measuring inside and outside surface wall and air temperature in summer. Analyses of rammed earth wall thermal performances have shown that the wall has low thermal conductivity, high heat capacity and significant thermal mass effect which is the key element enabling thermal stability. The research indicates rather good thermal properties of the rammed earth walls. Potential of rammed earth wall in Vojvodina should be an issue of further analysis, although the possibility of improvement of existing facilities to meet current standards in terms of energy efficiency should be considered.

scholarly journals Vertical Rods as a Seismic Reinforcement Technique for Rammed Earth Walls: An Assessment

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Q.-B. Bui ◽  
T.-T. Bui ◽  
R. El-Nabouch ◽  
D.-K. Thai
Keyword(s):  
Compressive Strength ◽  
Numerical Study ◽  
Construction Material ◽  
Thermal Inertia ◽  
Embodied Energy ◽  
Rammed Earth ◽  
Seismic Action ◽  
Horizontal Force ◽  
The Subject ◽  
Earth Walls

Rammed earth (RE) is a construction material which is manufactured by compacting soil by layers within a formwork to build a monolithic wall. RE material is the subject of numerous scientific researches during the last decade because of the significant heritage of RE buildings and the sustainable properties of this material: low embodied energy, substantial thermal inertia, and natural regulator of moisture. The seismic performance of RE buildings is an interesting topic which needs to be thoroughly investigated. This paper presents a numerical study which assesses the relevancy of a seismic reinforcement technique for RE walls by using two vertical steel rods installed at two extremities of the walls. The discrete element method (DEM) was used to model unreinforced and reinforced RE walls. These walls were first loaded with a vertical stress on the top to simulate the vertical loads and then submitted to a horizontal loading on the top to simulate the seismic action. Two current cases of RE buildings were investigated: one-storey and two-storey buildings. The results showed that the reinforcement technique enhanced the maximum horizontal force about 25% and 10%, respectively, for the cases of one- and two-storey buildings. Higher effectiveness of this reinforcement technique is expected for RE materials having higher compressive strength, for example, stabilized RE.

scholarly journals Rammed earth walls in Mediterranean climate: material characterization and thermal behaviour

2016 ◽  
Author(s):  
Susana Serrano ◽  
Lídia Rincón ◽  
Belen González ◽  
Antonia Navarro ◽  
Montserrat Bosch ◽  
...  
Keyword(s):  
Thermal Behaviour ◽  
Material Characterization ◽  
Mediterranean Climate ◽  
Rammed Earth ◽  
Earth Walls

Evaluating rammed earth walls: a case study

Solar Energy ◽  
2004 ◽  
Vol 76 (1-3) ◽  
pp. 79-84 ◽  
Author(s):  
P. Taylor ◽  
M.B. Luther
Keyword(s):  
Rammed Earth ◽  
Earth Walls

scholarly journals The Vernacular Roots Vernacular Architecture as a Leader to the New Sustainable Dwelling

2019 ◽  
Vol 3 (2) ◽  
pp. 6
Author(s):  
Vanessa Flaiban
Keyword(s):  
Negative Impact ◽  
Climatic Factors ◽  
Local Population ◽  
Vernacular Architecture ◽  
Tourism Industry ◽  
High Tech ◽  
Index Terms ◽  
The Tropics ◽  
Local Materials

In today's world, sustainability is gaining importance primarily in architecture; it should be possible to build it sustainably in the tropics. An example of this is the vernacular architecture, local materials and an adaptation to the environment, which enable the design of outstanding dwellings, which do not rely on technical tools. Unfortunately there is a great imbalance in Bali, and the local population is still strongly dependent on the building of the vernacular. The tourism industry has created its own high-tech architecture. Apart from a few exceptions, the luxury tourism industry nowadays has to deal with climatic factors instead of adapting them. Now I would like to research in a case study which aspects make the Balinese house so adapted and whether these aspects are still valid for today's claims. Basically, I asked myself these four questions: What are the characteristics of a contemporary tropical house in Bali? What aspects make these houses a tropical house without a negative impact on the Balinese vernacular architecture? What architectural means can help to create a local identity? Which architectural instrument makes it possible to integrate into Balinese urbanity? I would like to try to answer these questions using the case study of two examples and my gained knowledge. Index Terms— sustainability, vernacular, architecture

scholarly journals Use of Cement Stabilized Rammed Earth for Load Bearing Wall with Appropriate Finishes-Case Study

2018 ◽  
Vol 8 (02) ◽  
Author(s):  
G.W. T.C. Kandamby
Keyword(s):  
Concrete Beams ◽  
High Strength ◽  
Rammed Earth ◽  
Strength Parameters ◽  
Load Bearing ◽  
House Construction ◽  
Reinforced Cement ◽  
Strength And Durability ◽  
Earth Walls

Rammed earth is one of the traditional technology used for putting up houses in most parts of the world and it is being now rapidly developed through researches due to its valuable qualities especially strength, durability, environmental friendly and affordability. As a result, cement has been introduced as a stabilizer to gain high strength and durability. Local building codes and guidelines have been established to design and construct rammed earth walls successfully in buildings. Aim of this paper is to demonstrate the application of cement stabilized rammed earth for making load bearing walls of two storey house combining with reinforced cement concrete beams, lintels, slab and stairway. These walls have been structurally designed by following the code of engineering design of earth buildings NZS 4297:1998 published by New Zealand and applying strength parameters derived for local soils. House construction was totally completed in 2015 with smooth and rough wall finishes for internal and external surfaces of walls to get the good appearance to the house.

Earthen architectural heritage in the international context: values, threats, conservation principles and strategies

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Camilla Mileto ◽  
Fernando Vegas López-Manzanares
Keyword(s):  
Cultural Values ◽  
Environmental Sustainability ◽  
Vernacular Architecture ◽  
Archaeological Sites ◽  
Architectural Heritage ◽  
International Context ◽  
Content Type ◽  
Conservation Principles ◽  
Earthen Architecture

PurposeThis research aims to highlight the values, principles and recommendations for conservation in order to establish valid strategies for the conservation of earthen built heritage. This is done following a methodology which uses indirect (bibliography) and direct (case study) sources systematically analysed from different perspectives: the values of Earth as a material and of architectural and vernacular heritage; the heritage conservation principles found in international documents; and the analysis of over 3,000 case studies from which good practices in earthen architecture conservation are extracted.Design/methodology/approachEarthen built architectural heritage is found widely in all parts of the world, in archaeological sites and monumental and vernacular architecture, which research centres and researchers are increasingly studying and cataloguing. However, despite its richness and historic and cultural values, as well as its many merits in environmental sustainability, sociocultural and socio-economic terms, the value of this heritage has not been fully recognized in fields with major repercussions in conservation.FindingsFinally, these data are cross-referenced to establish the broadest possible strategies to guarantee all aspects to be taken into account in the conservation of earthen built architectural heritage.Originality/valueThe text provides an overview of the different methodologies in order to extract specific strategies applicable to the conservation of this heritage, both locally and globally.

EVALUASI PROYEKSI DEMAND BARANG DAN PENUMPANG PELABUHAN DI PROVINSI MALUKU

2019 ◽  
Vol 19 (2) ◽  
pp. 101-110
Author(s):  
Adrian Firdaus ◽  
M. Dwi Yoga Sutanto ◽  
Rajin Sihombing ◽  
M. Weldy Hermawan
Keyword(s):  
Time Series ◽  
Projection Method ◽  
Development Plan ◽  
Master Plan ◽  
Port Development ◽  
Loading And Unloading ◽  
The Difference ◽  
Existing Data

Abstract Every port in Indonesia must have a Port Master Plan that contains an integrated port development plan. This study discusses one important aspect in the preparation of the Port Master Plan, namely the projected movement of goods and passengers, which can be used as a reference in determining the need for facilities at each stage of port development. The case study was conducted at a port located in a district in Maluku Province and aims to evaluate the analysis of projected demand for goods and passengers occurring at the port. The projection method used is time series and econometric projection. The projection results are then compared with the existing data in 2018. The results of this study show that the econometric projection gives adequate results in predicting loading and unloading activities as well as the number of passenger arrival and departure in 2018. This is indicated by the difference in the percentage of projection results towards the existing data, which is smaller than 10%. Whereas for loading and unloading activities, time series projections with logarithmic trends give better results than econometric projections. Keywords: port, port master plan, port development, unloading activities  Abstrak Setiap pelabuhan di Indonesia harus memiliki sebuah Rencana Induk Pelabuhan yang memuat rencana pengem-bangan pelabuhan secara terpadu. Studi ini membahas salah satu aspek penting dalam penyusunan Rencana Induk Pelabuhan, yaitu proyeksi pergerakan barang dan penumpang, yang dapat dipakai sebagai acuan dalam penentuan kebutuhan fasilitas di setiap tahap pengembangan pelabuhan. Studi kasus dilakukan pada sebuah pelabuhan yang terletak di sebuah kabupaten di Provinsi Maluku dan bertujuan untuk melakukan evaluasi ter-hadap analisis proyeksi demand barang dan penumpang yang terjadi di pelabuhan tersebut. Metode proyeksi yang dipakai adalah proyeksi deret waktu dan ekonometrik. Hasil proyeksi selanjutnya dibandingkan dengan data eksisting tahun 2018. Hasil studi ini menunjukkan bahwa proyeksi ekonometrik memberikan hasil yang cukup baik dalam memprediksi aktivitas bongkar barang serta jumlah penumpang naik dan turun di tahun 2018. Hal ini diindikasikan dengan selisih persentase hasil proyeksi terhadap data eksisting yang lebih kecil dari 10%. Sedangkan untuk aktivitas muat barang, proyeksi deret waktu dengan tren logaritmik memberikan hasil yang lebih baik daripada proyeksi ekonometrik. Kata-kata kunci: pelabuhan, rencana induk pelabuhan, pengembangan pelauhan, aktivitas bongkar barang

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