Characteristics of metakaolin-based geopolymer concrete for different mix design parameters

Albidah, Abdulrahman; Alghannam, Mohammed; Abbas, Husain; Almusallam, Tarek; Al-Salloum, Yousef

doi:10.1016/j.jmrt.2020.11.104

Cited by 130 publications

(47 citation statements)

References 39 publications

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“…Self-compacting geopolymer concrete with zero cement and zero superplasticizers cured under ambient conditions was tested to have 40 MPa compressive strength after 28 days of curing, which is comparable to that of M40 grade conventional concrete [18]. The strength of geopolymer concrete was reported to increase with an increase of curing time and a rise in temperature, as reported in several studies [19][20][21]. However, Zhang et al [22] clarified that the strength of geopolymer concrete deteriorated after exposure to an optimal curing temperature.…”

Section: Introductionsupporting

confidence: 54%

Durability Performance of Geopolymer Concrete: A Review

Wong

2022

Polymers

107

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Geopolymer concrete is produced from the geopolymerization process, in which molecules known as oligomers integrate to form geopolymer networks with covalent bonding. Its production expends less thermal energy and results in a smaller carbon footprint compared to Ordinary Portland Cement (OPC) concrete. It requires only an alkaline activator to catalyze its aluminosilicate sources such as metakaolin and fly ash, to yield geopolymer binder for the geopolymerization to take place. Because of its eco-friendly technology and practical application, current research interest is mainly concentrated on the endurance of geopolymer concrete to resist heat and chemical aggressions. As such, it is pertinent for this review article to provide critical insight into the recent progress in research on the durability of geopolymer concrete. One significant outcome of the review is that the admixture of geopolymer concrete could be blended with additives such as micro-silica and fibers such as polypropylene fibers, to enhance its durability. The review on the durability aspects of geopolymer concrete showed that it had high compressive strength at an optimal elevated temperature, low to medium chloride ion penetrability, and high resistance to acid attack and abrasion. This makes geopolymer concrete a viable candidate to replace OPC concrete in the construction industry.

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Section: Introductionsupporting

confidence: 54%

Durability Performance of Geopolymer Concrete: A Review

Wong

2022

Polymers

107

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“…In order to overcome these problems associated with OPC production, researchers started searching for new binding materials. In the 1970s, it was pointed out by Davidovits that a fire-proof inorganic polymer obtained by alkali activated alumino silicate materials would be a probable alternative to OPC [77][78][79]. This polymer was named a geopolymer.…”

Section: Geopolymer Cement and Concretementioning

confidence: 99%

Clays and Clay Minerals in the Construction Industry

Singh

2022

Minerals

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Clay is a naturally occurring material that can be converted to different clay minerals through thermal treatments, and can be used for the development of different products. Clays and clay minerals have been used for different applications in different sectors. Detailed information regarding the applications of these materials in the construction industry are described. Clay has been used as a supplementary cementitious material in Portland cement (OPC) mortars and concretes. These minerals decrease raw materials and CO2 emissions during the production of Portland cement clinker and, at the same time, increase the compressive strength of concrete at a later age. Therefore, they are conducive to the sustainability of construction materials. A new type of cement, Limestone calcined clay cement (LC3), and a binding material geopolymer cement have also been developed using clay minerals. The properties of these binders have been discussed. Applications of clay products for making bricks have are also described in this article.

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“…Duxson et al (2007) [10] have observed a minimal change in the compressive strength of metakaolin-based geopolymer specimens between 7 and 28 days of ageing. Albidah et al (2021) [11] have obtained the results where the metakaolin-based geopolymer concrete specimens at 7 days of ageing have achieved 89.1-95.3% of the compressive strength obtained at 28 days. Also, some geopolymer concrete specimens at 14 days had a compressive strength nearly equivalent to the 28-day compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Influence of rice husk ash substitution on some physical, mechanical and durability properties of the metakaolin-based geopolymer mortar

Kabirova

Uysal

2022

Journal of Sustainable Construction Materials and Technologies

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In this study, it is aimed to investigate the influence of rice husk ash, which is a waste by-product of industrial production, on ultrasonic pulse velocity, compressive strength, flexural strength and high temperature endurance of the metakaolin-based geopolymer mortar. For this, the sand was substituted by rice husk ash (RHA) at the rate of 25%, 50% and 75% by wt. in the production of geopolymer mortar. A total of 4 series of metakaolin-based geopolymer mortars (reference series and three series with RHA substitution) were produced. In this study, the geopolymer, in other words, the binder of the mortar was produced by metakaolin and ground granulated blast furnace slag reacting with the mixture of sodium hydroxide (12M NaOH) and sodium silicate (Na2SiO3) solutions. The ratio of metakaolin and reactant mixture (12M NaOH + Na2SiO3) was determined for each series following the preliminary experiments. On the specimens produced as 50 mm cube and 40 x 40 x 160 mm prism, the intended experiments were carried out after specimens underwent curing in a dry oven at 60oC during 72 h and gained strength. The results showed that RHA could be used as a filling material in metakaolin-based geopolymer mortars, and metakaolin-based geopolymer mortars with 50% RHA substitution can be an alternative to the pure metakaolin-based mortar.

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Characteristics of metakaolin-based geopolymer concrete for different mix design parameters

Cited by 130 publications

References 39 publications

Durability Performance of Geopolymer Concrete: A Review

Durability Performance of Geopolymer Concrete: A Review

Clays and Clay Minerals in the Construction Industry

Influence of rice husk ash substitution on some physical, mechanical and durability properties of the metakaolin-based geopolymer mortar

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