Effect of Various Input Parameters on Compressed Earth Block’s Strength

2020 ◽  
Vol 838 ◽  
pp. 81-87
Author(s):  
Petr Konrád ◽  
Peter Gallo ◽  
Radoslav Sovják ◽  
Šárka Pešková ◽  
Jan Valentin
Keyword(s):  
Compressive Strength ◽  
Recycled Concrete ◽  
Strength Testing ◽  
Structural Elements ◽  
Material Parameters ◽  
Confinement Pressure ◽  
Compressed Earth Blocks ◽  
Earth Blocks ◽  
Manufacturing Parameters ◽  
Water Contents

In the framework of this study, compressed earth blocks (CEB) were produced using waste materials and various parameters. Material parameters included waste soil, recycled concrete, fly ash, cement, admixtures and water contents. Manufacturing parameters were vibration during manufacturing, confinement pressure, curing environment and curing time. Specimens used in this study were cubes and compressive strength testing was used to evaluate different mixtures and manufacturing methods. In terms of compressive strength, compressed earth blocks made of these materials could be used for manufacturing bricks and other structural elements.

Compressive strength testing of compressed earth blocks

2007 ◽  
Vol 21 (2) ◽  
pp. 303-309 ◽  
Author(s):  
Jean-Claude Morel ◽  
Abalo Pkla ◽  
Peter Walker
Keyword(s):  
Compressive Strength ◽  
Strength Testing ◽  
Compressed Earth Blocks ◽  
Earth Blocks

The influence of the addition of ground olive stone on the thermo-mechanical behavior of compressed earth blocks

2020 ◽  
Vol 108 (2) ◽  
pp. 203
Author(s):  
Samia Djadouf ◽  
Nasser Chelouah ◽  
Abdelkader Tahakourt
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Mechanical Behavior ◽  
Agricultural Waste ◽  
Hydraulic Press ◽  
Dry Density ◽  
Olive Stone ◽  
Compressed Earth Blocks ◽  
Clay Matrix ◽  
Earth Blocks

Sustainable development and environmental challenges incite to valorize local materials such as agricultural waste. In this context, a new ecological compressed earth blocks (CEBS) with addition of ground olive stone (GOS) was proposed. The GOS is added as partial clay replacement in different proportions. The main objective of this paper is to study the effect of GOS levels on the thermal properties and mechanical behavior of CEB. We proceeded to determining the optimal water content and equivalent wet density by compaction using a hydraulic press, at a pressure of 10 MPa. The maximum compressive strength is reached at 15% of the GOS. This percentage increases the mechanical properties by 19.66%, and decreases the thermal conductivity by 37.63%. These results are due to the optimal water responsible for the consolidation and compactness of the clay matrix. The substitution up to 30% of GOS shows a decrease of compressive strength and thermal conductivity by about 38.38% and 50.64% respectively. The decrease in dry density and thermal conductivity is related to the content of GOS, which is composed of organic and porous fibers. The GOS seems promising for improving the thermo-mechanical characteristics of CEB and which can also be used as reinforcement in CEBS.

scholarly journals Bloques de Tierra Comprimida (BTC) estabilizados con cal y cemento. Evaluación de su impacto ambiental y su resistencia a compresión

2020 ◽  
Vol 10 (2) ◽  
pp. 70-81
Author(s):  
Santiago Pedro Cabrera ◽  
Yolanda Guadalupe Aranda-Jiménez ◽  
Edgardo Jonathan Suárez-Domínguez ◽  
Rodolfo Rotondaro
Keyword(s):  
Compressive Strength ◽  
Environmental Impact ◽  
Portland Cement ◽  
Life Cycle Analysis ◽  
Negative Impact ◽  
Santa Fe ◽  
Compressed Earth Blocks ◽  
Earth Blocks ◽  
Negative Environmental Impact ◽  
The City

This work presents the evaluation of the environmental impact and compressive strength of Compressed Earth Blocks (CEB) stabilized with hydrated aerial lime and Portland cement. For this, 12 series of blocks stabilized with different proportions of lime and cement were manufactured and the Life Cycle Analysis (LCA) methodology was used. After conducting these assays and simulations, it could be concluded that, using earth and sand typical of the city of Santa Fe (Argentina), stabilized with certain percentages of Portland cement between 5 and 10% in weight, CEB can be produced with sufficient levels of strength for them to be used in load-bearing walls, in this way minimizing the negative environmental impact associated with their manufacturing. It is also concluded that the stabilization with aerial lime does not increase the CEB’s compressive strength and, on the contrary, significantly increases their negative impact on the environment.

scholarly journals Mechanical and Thermal Performance Characterisation of Compressed Earth Blocks

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2978 ◽  
Author(s):  
Elisabete R. Teixeira ◽  
Gilberto Machado ◽  
Adilson de P. Junior ◽  
Christiane Guarnier ◽  
Jorge Fernandes ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Compressive Strength ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Water Absorption ◽  
Thermal Performance ◽  
Pulse Velocity ◽  
Building Envelope ◽  
Compressed Earth Blocks ◽  
Earth Blocks

The present research is focused on an experimental investigation to evaluate the mechanical, durability, and thermal performance of compressed earth blocks (CEBs) produced in Portugal. CEBs were analysed in terms of electrical resistivity, ultrasonic pulse velocity, compressive strength, total water absorption, water absorption by capillarity, accelerated erosion test, and thermal transmittance evaluated in a guarded hotbox setup apparatus. Overall, the results showed that compressed earth blocks presented good mechanical and durability properties. Still, they had some issues in terms of porosity due to the particle size distribution of soil used for their production. The compressive strength value obtained was 9 MPa, which is considerably higher than the minimum requirements for compressed earth blocks. Moreover, they presented a heat transfer coefficient of 2.66 W/(m2·K). This heat transfer coefficient means that this type of masonry unit cannot be used in the building envelope without an additional thermal insulation layer but shows that they are suitable to be used in partition walls. Although CEBs have promising characteristics when compared to conventional bricks, results also showed that their proprieties could even be improved if optimisation of the soil mixture is implemented.

scholarly journals Evaluation of Belgian clays for manufacturing compressed earth blocks

2019 ◽  
Vol 22 (3-4) ◽  
pp. 139-148
Author(s):  
Lavie A. MANGO-ITULAMYA ◽  
Frédéric COLLIN ◽  
Pascal PILATE ◽  
Fabienne COURTEJOIE ◽  
Nathalie FAGEL
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Abrasion Resistance ◽  
Clay Deposits ◽  
Compressed Earth Blocks ◽  
Earth Blocks ◽  
Sand And Gravel

This study aims to characterize Belgian clays in order to evaluate their use for manufacture of compressed earth blocks (CEB). Nineteen Belgian clay deposits were sampled in 56 sites and 135 samples were collected and analyzed. The analyses focus on the determination of particle size, plasticity, nature and mineralogy as the main characteristics for assessing the suitability of the raw clays to make CEB. These analyses allow for classifying the sampled clay deposits in three categories: clays that can be used unchanged to make CEB (2 clay deposits), clays that are suitable for the manufacture of CEB but require addition of sand and gravel particles (13 clay deposits) and clays that are suitable for the manufacture of CEB if they are mixed with other raw clays (4 clay deposits). In order to verify the use of these clays, five of them served as a model for making CEB. The strength of these bricks was evaluated by testing for compressive strength and abrasion resistance. The results of these tests confirm the suitability or not of the sampled clays for the manufacture of CEB.

scholarly journals Calcium Carbide Residue and Rice Husk Ash for improving the Compressive Strength of Compressed Earth Blocks

MRS Advances ◽  
2018 ◽  
Vol 3 (34-35) ◽  
pp. 2009-2014 ◽  
Author(s):  
Philbert Nshimiyimana ◽  
David Miraucourt ◽  
Adamah Messan ◽  
Luc Courard
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Calcium Carbide ◽  
Pozzolanic Reaction ◽  
Compressed Earth Blocks ◽  
Calcium Carbide Residue ◽  
Earth Blocks ◽  
Wall Construction ◽  
By Products

ABSTRACTEarth stabilization, using two by-products available in Burkina Faso: Calcium Carbide Residue (CCR) and Rice Husk Ash (RHA), improved the performance of compressed earth blocks (CEBs). The effect of adding CCR or CCR: RHA (in various ratios) to the clayey earth was investigated. CEBs were molded by manually compressing moisturized mixtures of earthen materials and 0-15 % CCR or CCR: RHA (various ratios) with respect to the weight of earthen material. The results showed that, with 15 % CCR: RHA in 7: 3 ratio, the compressive strength of CEBs (6.6 MPa) is three times that of the CEBs containing 15 % CCR alone (2.2 MPa). This improvement was related to the pozzolanic reaction between CCR, clay and RHA. These CEBs comply with the requirement for wall construction of two-storey housing.

Effect of production and curing conditions on the performance of stabilized compressed earth blocks: Kaolinite vs quartz-rich earthen material

MRS Advances ◽  
2020 ◽  
Vol 5 (25) ◽  
pp. 1277-1283 ◽  
Author(s):  
Philbert Nshimiyimana ◽  
Hassan Seini Moussa ◽  
Adamah Messan ◽  
Luc Courard
Keyword(s):  
Compressive Strength ◽  
Moisture Content ◽  
Ambient Temperature ◽  
Mechanical Performance ◽  
Calcium Carbide ◽  
Optimum Moisture Content ◽  
Curing Conditions ◽  
Compressed Earth Blocks ◽  
Calcium Carbide Residue ◽  
Earth Blocks

AbstractThis study investigated the effect of production and curing parameters on the mechanical performance of compressed earth blocks (CEBs) stabilized with 0-20 wt % CCR (calcium carbide residue). Kaolinite (K) and quartz (Q)-rich earthen materials were mixed with the CCR and used to mould CEBs at optimum moisture content (OMC) and OMC+2 % of the dry mixtures, cured at 20 °C, ambient temperature in the lab (30±5 °C) and 40 °C for 0-90 days. After curing, the reactivity of the materials and compressive strength of dry CEBs were tested. Increasing the moulding moisture from OMC to OMC+2 decreased the compressive strength 0.3 times (4.4 to 3.3 MPa) for the CEBs stabilized with 20 % CCR cured at 30±5 °C for 45 days. Similarly, the compressive strength (4.4 MPa) was reached by CEBs stabilized with 10 and 20 % CCR after 28 and 45 days of curing, respectively. At 40 °C, the compressive strength increased 3.3 times (1.1 to 4.7 MPa with 0 to 20 % CCR) for K-rich and 2.5 times (2 to 7.1 MPa) for Q˗rich materials. At 20 °C, the compressive strength increased only 1.3 times (1.1 to 2.5 MPa) for K˗rich and barely 0.7 times (2 to 3.4 MPa) for Q-rich materials. These suggest that CCR is useful for stabilization and improving the performances of CEBs in hot regions.

scholarly journals Influence of the addition of "synthetic termite saliva" in the compressive strength and water absorption of compacted soil-cement

2016 ◽  
Vol 16 (3) ◽  
pp. 127-136 ◽  
Author(s):  
Obede Borges Faria ◽  
Rosane Aparecida Gomes Battistelle ◽  
Célia Neves
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Rammed Earth ◽  
Clayey Sand ◽  
Compacted Soil ◽  
Soil Cement ◽  
Compressed Earth Blocks ◽  
Earth Blocks

Abstract The aim of this paper is to determine the effect of adding 0.1 wt% of "synthetic termite saliva" on a fine and clayey sand latosol (76.5% sand) from the region of Bauru, SP (Brazil), stabilized with 1% to 3% of cement. Compacted cylindrical specimens (with standard Proctor energy) were tested to determine their compressive strength and water absorption. The results indicate that the use of the chemical stabilizer increased by at least 35% the compressive strength and reduced by up to 13% the water absorption of the samples. This work contributes to efforts aimed at reducing the consumption of cement through the production of stabilized compressed earth blocks and bricks (CEB) and rammed earth.

scholarly journals Influence of Compacting Rate on the Properties of Compressed Earth Blocks

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Humphrey Danso
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Strength Properties ◽  
Strength Test ◽  
Significant Difference ◽  
Compressive Strength Test ◽  
Compressed Earth Blocks ◽  
Earth Blocks ◽  
Erosion Properties ◽  
Linear Correlations

Compaction of blocks contributes significantly to the strength properties of compressed earth blocks. This paper investigates the influence of compacting rates on the properties of compressed earth blocks. Experiments were conducted to determine the density, compressive strength, splitting tensile strength, and erosion properties of compressed earth blocks produced with different rates of compacting speed. The study concludes that although the low rate of compaction achieved slightly better performance characteristics, there is no statistically significant difference between the soil blocks produced with low compacting rate and high compacting rate. The study demonstrates that there is not much influence on the properties of compressed earth blocks produced with low and high compacting rates. It was further found that there are strong linear correlations between the compressive strength test and density, and density and the erosion. However, a weak linear correlation was found between tensile strength and compressive strength, and tensile strength and density.

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