Role of industrial based precursors in the stabilization of weak soils with geopolymer – A review

Parthiban, D.; Vijayan, D. S.; Koda, Eugeniusz; Vaverková, Magdalena Daria; Piechowicz, Konrad; Osiński, Piotr; Van, Duc Bui

doi:10.1016/j.cscm.2022.e00886

Cited by 28 publications

(17 citation statements)

References 95 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, these chemical compositions play a crucial role in the alkaline activation process. [28][29][30] Besides, it can be observed from Table 1 that the major chemical compositions of cement are CaO, SiO 2 , and Al 2 O 3 .…”

Section: Raw Materialsmentioning

confidence: 99%

Effect of low-calcium fly ash inclusion on long-term mechanical properties and durability of ground granulated blast furnace slag-based cement-free mortars

Bui,

Ho,

Shi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

The present study focused on fabricating cement-free mortar based on ground granulated blast furnace slag incorporating low-calcium fly ash as precursors in an alkaline solution of sodium hydroxide and sodium silicate. The main purposes of the study were not only to find the optimum mixture proportions to confirm the fly ash role in contributing to the long-term mechanical properties and durability but also to expand the use of fly ash in cement-free binders based on ground granulated blast furnace slag. The ground granulated blast furnace slag was replaced with fly ash in the cement-free mortar at various levels of 30, 40, 50, 60, and 70% by mass. The cement-based sample as a control sample was prepared for comparison purposes. Results showed that the cement-free mortar samples with fly ash had the more superior long-term mechanical properties (i.e. flexural and compressive strengths and volumetric compaction via ultrasonic pulse velocity test) and durability (i.e. total charge passed via rapid chloride penetration test and sulfate resistance via length change of samples exposed to sulfate solution), lower water absorption and porosity, and denser microstructure than the control sample up to 120 days. The 40% replacement of ground granulated blast furnace slag by fly ash as an auxiliary source of alumina and silica was the optimum ratio in enhancing the long-term mechanical properties and durability of the cement-free mortar samples, which is in agreement with reducing the porosity and water absorption. The results of the environmental analysis indicate that using cement-free mortar samples has much lower environmental impacts. The cement-free mortar sample using 60% ground granulated blast furnace slag and 40% fly ash is found as an optimal mixture in terms of technical and environmental features.

show abstract

Section: Raw Materialsmentioning

confidence: 99%

Effect of low-calcium fly ash inclusion on long-term mechanical properties and durability of ground granulated blast furnace slag-based cement-free mortars

Bui,

Ho,

Shi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

show abstract

“…It was estimated that during the manufacturing of each ton of cement, nearly 3.2GJ of natural energy has been consumed and releases detrimental greenhouse gases like carbon dioxide, oxides of nitrogen, and sulfur dioxide are found widely spread in the atmosphere [1]. On other hand, during the stabilization of poor expansive soil, the conservative bonding materials have not been providing promotable outcomes, increase project cost, and cause long-term environmental effects such as groundwater pollution, the decline of plant growth, and long-term retention of chemicals within the soil mass [2]. Hence it becomes important to devolve an alternative binding material that replaces the usage of conventional cement and other conventional binding materials to counteract the harmful effect of those greenhouse gases.…”

Section: Introductionmentioning

confidence: 99%

A short review on Substantial role of Geopolymer in the sustainable construction industry

Devarajan

vijayan

Kumar

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Civil engineering has made significant strides in the discovery and application of novel materials during the past several decades. This list of notable substances contains a novel substance referred to as “Geopolymer,” which has been defined as a new bonding material derived from inorganic chemistry via polymerization of alumina-based silicate oxides with sodium, calcium, or potassium-based hydroxide compounds. The mixture of these chemical compounds, when applied, initiates an alkaline activation reaction that leads to the development of a nebulous structure. Unlike most organic or inorganic polymers, geopolymer is exemplified at temperatures below 1000°C. Because geopolymer is more eco-friendly than currently available construction adhesives, its use in building activities is on the rise. This review includes an examination of the history of geopolymer, the essential silicate material required to prepare geopolymer, the presence and reactions of the chemical compounds used to create alkaline activator solutions at different molar ratios, the curing conditions, the engineering characteristics of geopolymer activated specimens, and their resistance to chemicals. This review concludes that geopolymer technology is the best material for several applications in civil engineering in the twenty-first century.

show abstract

“…Stabilisation of clayey soil is a technique introduced many years ago with the main purpose to render the soils capable of meeting the requirements of specific engineering projects 1 and is still currently used in rural areas. 2 Several components such as lime, 3 cement, [4][5][6] industrial residues including waste glass, 7 high calcium fly ash, 8 mine tailings, 9 calcium carbide residue 10 and concrete sludge waste 11 are introduced into soil-based materials to improve their mechanical strength and physical properties. However, the main problem with using clay or laterite as a building material is the dimensional variation as well as the formation of cracks during the drying process, due to the fragile nature of the earth blocks.…”

Section: Introductionmentioning

confidence: 99%

Dimensional stability, durability and performance of hybrid recycled cellulose fibres reinforcing earth-based materials

Stanislas

Mahamat

Bilba

et al. 2023

Journal of Composite Materials

View full text Add to dashboard Cite

Brittle fracture initially occurs at the nanometric and/or interatomic scale without prior plastic deformation under elastic loading. Fibres of different dimensional scales in hybrid composites provide dense packaging and act as reinforcements in the corresponding scales and dimensions. This study evaluated the effect of the inclusion of cellulose pulp (CP) (5wt%, 4.5wt%, 4wt% and 3.5wt%) combined with cellulose nanofibrils (CNF) (0.5wt%, 1wt% and 1.5wt%) from recycled cardboard on the water absorption, density, dimensional stability, thermal insulation, flexural strength and durability of earth-based materials. The total cellulose content (CP and CNF) is set at 5wt%. The results show that the partial replacement of CP by CNF contributes to an increase in the moisture content of the composite from 18% to 21%, while there is a reduction in their dry shrinkage from 2.29% to 1.29% and in their thermal conductivity from 0.42 to 0.39 W/m.K. This is attributed to the different dimensional scales of the fibres in hybrid composites, which provide a dense assembly with greater dimensional stability. The 3.5% CP content combined with 1.5% CNF showed the highest flexural strength (2.76 MPa) and modulus of elasticity (1.93 GPa) of the hybrid materials under four-point bending loading, due to the high anchorage between the cellulose fibres and the matrix. CP and CNF as reinforcing agents in an earth-based matrix is a suitable solution for improving the flexural strength, density, dimensional stability and durability of building bricks. However, bricks reinforced only with CP are recommended where flexural strength and toughness are essential requirements.

show abstract

Role of industrial based precursors in the stabilization of weak soils with geopolymer – A review

Cited by 28 publications

References 95 publications

Effect of low-calcium fly ash inclusion on long-term mechanical properties and durability of ground granulated blast furnace slag-based cement-free mortars

Effect of low-calcium fly ash inclusion on long-term mechanical properties and durability of ground granulated blast furnace slag-based cement-free mortars

A short review on Substantial role of Geopolymer in the sustainable construction industry

Dimensional stability, durability and performance of hybrid recycled cellulose fibres reinforcing earth-based materials

Contact Info

Product

Resources

About