scholarly journals Two-Dimensional Modeling of Heat Transfers in a Ventilated Test Cell Built with Various Local Materials

2021 ◽  
pp. 14-31
Author(s):  
Arouna Kaboré ◽  
Zoma Vincent ◽  
Palm Kalifa ◽  
Bathiebo Dieudonné Joseph
Keyword(s):  
Burkina Faso ◽  
Concrete Block ◽  
External Temperature ◽  
Dimensional Modeling ◽  
Hot Climate ◽  
Compressed Earth Block ◽  
The One ◽  
Heat Transfers ◽  
Earth Block ◽  
Local Materials

The main objective of this work is to find a material that attenuates heat transfer and provides an acceptable indoor environment in the habitat of countries with a hot and dry climate like Burkina Faso. The absence of thermal regulations in Burkina Faso leads to the development of buildings constructed with materials that do not provide thermal comfort. This study therefore aims to compare the thermal performance of local materials such as BLT, BTC, concrete block and adobe in order to propose a material adapted to the hot climate. In this work, a modelling and simulation is conducted with the COMSOL software. The modelling is done on a building of dimensions 4m×3m×3m, built successively with cut laterite block (BLT), compressed earth block (BTC), hollow concrete block, and adobe. As for the simulation, it concerns the evolution of the internal and external temperature of the building. The heat flows on the Northern and Southern sides are neglected due to the overhang of the roof. The results obtained show that the cell built with BTC allows a 4°C reduction, the one built with BLT a 2°C reduction and the one built with adobe a 1.5°C gain compared to the one built with concrete block. Thus, the material that best meets the criteria is BTC.

scholarly journals The Paradox around the Social Representations of Compressed Earth Block Building Material in Burkina Faso: The Material for the Poor or the Luxury Material?

2021 ◽  
Vol 09 (01) ◽  
pp. 50-65
Author(s):  
Ousmane Zoungrana ◽  
Maïmouna Bologo/Traoré ◽  
Adamah Messan ◽  
Philbert Nshimiyimana ◽  
Gautier Pirotte
Keyword(s):  
Burkina Faso ◽  
Building Material ◽  
Social Representations ◽  
The Poor ◽  
The Social ◽  
Compressed Earth Block ◽  
Earth Block

Influence of Lime Treatment on the Mechanical Behaviour of a Compressed Earth Block

2021 ◽  
Vol 12 (4) ◽  
pp. 228
Author(s):  
Karim Khiro Sebaa ◽  
Assia Benchouk ◽  
Feth-Ellah Mounir Derfouf ◽  
Khalffallah Mekaideche ◽  
Nabil Abou-Bekr ◽  
...  
Keyword(s):  
Mechanical Behaviour ◽  
Lime Treatment ◽  
Compressed Earth Block ◽  
Earth Block

Mechanical Properties of Various Models of Interlocking Concrete Blocks under In-Plane and Out-of-Plane Loads

2021 ◽  
Vol 881 ◽  
pp. 149-156
Author(s):  
Mochamad Teguh ◽  
Novi Rahmayanti ◽  
Zakki Rizal
Keyword(s):  
Mechanical Properties ◽  
Building Material ◽  
Experimental Tests ◽  
Concrete Block ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Plane Shear ◽  
Out Of Plane ◽  
Concrete Blocks ◽  
Local Materials

Building material innovations in various interlocking concrete block masonry from local materials to withstand lateral earthquake forces is an exciting issue in masonry wall research. The block hook has an advantage in the interlocking system's invention to withstand loads in the in-plane and out-of-plane orientations commonly required by the masonry walls against earthquake forces. Reviews of the investigation of in-plane and out-of-plane masonry walls have rarely been found in previous studies. In this paper, the results of a series of experimental tests with different interlocking models in resisting the simultaneous in-plane shear and out-of-plane bending actions on concrete blocks are presented. This paper presents a research investigation of various interlocking concrete blocks' mechanical properties with different hook thicknesses. Discussion of the trends mentioned above and their implications towards interlocking concrete block mechanical properties is provided.

scholarly journals Mechanical performance of compressed earth block masonry using granitic residual soils

2016 ◽  
pp. 865-872
Author(s):  
D.V. Oliveira ◽  
T.F. Miranda ◽  
L.F. Ramos ◽  
R.A. Silva ◽  
E. Soares ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Residual Soils ◽  
Compressed Earth Block ◽  
Earth Block

scholarly journals Characteristics of Hollow Compressed Earth Block Stabilized Using Cement, Lime, and Sodium Silicate

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Walid Edris ◽  
Faris Matalkah ◽  
Bara’ah Rbabah ◽  
Ahmad Abu Sbaih ◽  
Reham Hailat
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Sodium Silicate ◽  
Low Cost ◽  
Construction Material ◽  
Early Age ◽  
Compressed Earth Block ◽  
Earth Block ◽  
Lower Production ◽  
Northern Jordan

Abstract This research aims to produce a Compressed Earth Block (CEB) product using locally available soil collected from northern Jordan. The CEB mixture was further stabilized using Portland cement, lime, and sodium silicate. The research significance is based upon the urgent need of most developing countries (e.g. Jordan, Egypt…etc) to build more durable and low-cost houses by using locally available materials. As a result, CEB was identified as a cheap and environmentally friendly construction material. CEB specimens were thoroughly characterized by studying the mechanical properties and durability characteristics. Blocks of 30 x 15 x 8 cm with two holes of 7.5 cm in diameter have a potential for higher enduring, higher compressive strength, better thermal insulation, and lower production cost. Blocks were manufactured with an addition of 8 % for either Portland cement or lime, as well as 2 % of sodium silicate to the soil. The results showed that the addition of 8 % of cement to the CEB achieves satisfactory results in both mechanical and durability properties. Also, the addition of sodium silicate was found to enhance the early-age compressive strength however it affected negatively the durable properties of blocks by increasing the erosion rate and deterioration when exposed to water.

scholarly journals Utilizing Temperature and Brine Inflow Measurements to Constrain Reservoir Parameters During a Salt Heater Test

Minerals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1025
Author(s):  
Richard S. Jayne ◽  
Kristopher L. Kuhlman
Keyword(s):  
Nuclear Waste ◽  
Field Measurements ◽  
Chemical Processes ◽  
Nuclear Waste Storage ◽  
One Dimensional ◽  
Waste Storage ◽  
Dimensional Modeling ◽  
Damaged Zone ◽  
The One ◽  
Best Fit

Brine availability in salt has multiple implications for the safety and design of a nuclear waste storage facility. Brine availability includes both the distribution and transport of brine through a damaged zone around boreholes or drifts excavated into the salt. Coupled thermal, hydrological, mechanical, and chemical processes taking place within heated bedded salt are complex; as part of DECOVALEX 2023 Task E this study takes a parsimonious modeling approach utilizing analytical and numerical one-dimensional simulations to match field measurements of temperature and brine inflow around a heater. The one-dimensional modeling results presented arrive at best-fit thermal conductivity of intact salt, and the permeability and porosity of damaged salt of 5.74 W/m·K, 10−17 m2, and ≈ 0.02, respectively.

Stability Coefficient of Interlocking Compressed Earth Block Masonry under Axial Compression

2020 ◽  
Author(s):  
Tianya Wang ◽  
Yihong Wang ◽  
Guiyuan Zeng ◽  
Jianxiong Zhang ◽  
Dan Shi
Keyword(s):  
Compressive Strength ◽  
Axial Compression ◽  
Design Guidelines ◽  
Stability Coefficient ◽  
Strength Failure ◽  
Compressed Earth Block ◽  
Out Of Plane ◽  
The Stability ◽  
Earth Block ◽  
Plane Deformations

To investigate the effects of the height-thickness ratio (β) on the mechanical properties and stability coefficients (φs) of interlocking compressed earth block (ICEB) masonry members under axial compression, four groups of specimens with different β of 3.75, 6.75, 11.25, and 14.25 were tested, thereby assessing their stress process, failure mode, compressive strength, and in- and out-of-plane deformations. All the specimens underwent brittle failure under axial compression: the compressive strength was found to decrease in a range from 5.6% to 43% with increasing β, whereas the initial stacking defects and the in- and out-of-plane deformations increased. The specimens became less stable, and we noticed that the overall damage was caused by strength failure and not instability failures. Because the stability coefficient of ICEB-based masonry components cannot be calculated as those of more conventional brickwork, we combined our results with well-established masonry design guidelines and derived an interlocking improvement coefficient.

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