Effectiveness of fly ash and cement for compressed stabilized earth block construction

Islam, Mohammad Shariful; Elahi, Tausif E; Shahriar, Azmayeen Rafat; Mumtaz, Nashid

doi:10.1016/j.conbuildmat.2020.119392

Cited by 54 publications

(21 citation statements)

References 37 publications

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“…For structural work and safety assessments, mechanical characterization, which includes compression strength, flexural strength, shear strength, and hardness testing, is required. In particular, compressive strength and durability tests are regarded as key indicators of the viability of masonry [ 168 , 169 ]. The physical attributes are also more important since they can be used to predict shrinkage, apparent bulk density, size or texture, moisture content, porosity, permeability, adhesion, and thermal properties [ 170 ].…”

Section: Performance Properties Of Mixtures Incorporating Diatomaceou...mentioning

confidence: 99%

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

et al. 2022

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The development of geopolymer building composites at a lower cost with a smaller carbon footprint may lessen the growing concerns about global warming brought on by emissions of a critical greenhouse gas (CO2) paired with the high production costs in the cement sector. Diatomaceous earth, commonly used as an admixture or partial replacement of cement owing to its most effective pozzolanic properties, has been investigated as a precursor in geopolymer concrete development. Several studies have been examined to develop a greater understanding of its characterization, inclusion status, and impacts on the performance aspects of concrete. The literature review showed that using diatomaceous earth is one of the effective ways to create sustainable, insulating, lightweight building materials while minimizing the harmful economic and environmental effects of industrial solid wastes. However, since most studies have focused on its integration as a partial cement substitute or a replacement for fine aggregate, further research on diatomaceous earth-based clinker-free concrete is required. A lack of research on geopolymer concrete’s reinforcement with either natural or synthetic fibers, or a combination of the two, was also discovered. This review also showed that there has been remarkably little effort made towards theoretical property correlation modeling for predicting concrete performance. It is anticipated that the detailed overview presented herein will guide potential researchers in defining their future paths in the study area.

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Section: Performance Properties Of Mixtures Incorporating Diatomaceou...mentioning

confidence: 99%

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

et al. 2022

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“…This average stress can be as low as 0.2 MPa in a single-storey structure. South African norms (SANS 10164, 1996) recommend a minimum strength of 3 MPa for blocks and the British norms (BS 5628, 1978) recommend a minimum strength of 2.8 MPa [8]. Therefore, for our study, we have chosen a vertical pressure higher than the two norms mentioned above.…”

Section: Description Of the Compressed Earth Blocksmentioning

confidence: 99%

“…Firstly, in the world, we have a great heterogeneity in the composition of the raw earth (sandy environmental soil, gravelly soil, laterite soil, and clay soil) [7]. Secondly, the soil differs from one area to another; therefore, soil analysis is necessary to identify which one is suitable for block making [8]. Thirdly, there are the delicate conditions of stabilization.…”

Section: Introductionmentioning

confidence: 99%

Failure analysis of compressed earth block using numerical plastic damage model

Bouhiyadi

Souinida

Hassouani

2022

Frattura Ed Integrità Strutturale

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In the last decade, several studies have been introduced to the development and use of compressed earth blocks in green building construction. Studying the evaluation of existing cracks in construction builders by these blocks is an important industrial and safety subject in recent research. This objective opens a new field in building construction where we describe the mechanical behavior of compressed earth solid blocks. In addition, we offer a solution to rupture damages presented by the propagation of masonry cracks. This paper aims to explore a numerical study in ABAQUS where we analyze the mechanical properties of this block. We started by investigating the elastic phase for this material and it has been generalized to a study in the plastic regime and rupture for the studied block. The different results of numerical simulation of the studied shape are presented, compared, and criticized.

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“…In DE- x, DE represents diatomite-modified coastal cement soil and x represents the diatomite incorporation percentage. The determination of cement weight mainly depends on two aspects: On the one hand, the cement and soil content in similar projects in the Shaoxing area of Zhejiang Province is about 3–8% [ 26 , 27 ]; on the other hand, the cement content recommended by the cement-stabilizing material ratio test in the Technical Guidelines for Construction of Highway Roadbases (JTG/T F20-2015) is 5% [ 28 ].…”

Section: Materials Experimental Scheme and Processmentioning

confidence: 99%

Experimental Study on the Mechanical Properties of Diatomite-Modified Coastal Cement Soil

Fang

Wang

et al. 2022

Materials

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Diatomite is a non-metallic mineral resource rich in SiO2, which can be used to modify coastal cement soil. In order to explore the mechanical modification effect of diatomite on coastal cement soil at the age of 7 days, based on coastal cement soil with cement content of 5 % (mass fraction), diatomite of 0 %, 5 %, 10 %, 15 % and 20% (mass fraction) was mixed for modification. Through the unconfined compressive strength test, the triaxial unconsolidated undrained test, backscattered electron imaging (BSE), and energy-dispersive spectroscopy (EDS) technology, the influence of diatomite content and confining pressure on the peak strength of modified coastal cement soil was explored. The empirical formula between the peak strength of the DE specimen and the content of diatomite and confining pressure was established by curve fitting, and the fitting effect was ideal. When diatomite was mixed with coastal cement soil, the optimal dosage of diatomite was 5% from the perspective of mechanical properties and economic benefits of the maximum growth rate of compression and shear. The unconfined compressive strength test showed that the peak strength and elastic modulus of the modified coastal cement soil with 5% diatomite content were 37% and 57% higher than those of cement soil, respectively. The triaxial unconsolidated undrained test showed that the internal friction angle of the modified coastal cement soil was stable at about 30°, and cohesion of DE-5, DE-10, DE-15, and DE-20 increased by 28%, 48%, 78%, and 97%, respectively, compared to cement soil. The microscopic test found that the pore distribution of modified coastal cement soil is closely related to the strength change. The results show that the addition of diatomite can effectively improve the mechanical properties of soil-cement.

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Effectiveness of fly ash and cement for compressed stabilized earth block construction

Cited by 54 publications

References 37 publications

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

Failure analysis of compressed earth block using numerical plastic damage model

Experimental Study on the Mechanical Properties of Diatomite-Modified Coastal Cement Soil

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