Pervious geopolymer concrete as sustainable material for environmental application

Azad, Amaanuddin M.; Anshul, Avneesh; Azad, Numanuddin; Samarakoon, S. M. Samindi M. K.; Yadav, Ravikant; Bherwani, Hemant; Gupta, Ankit; Gebremariam, Kidane Fanta

doi:10.1016/j.matlet.2022.132176

Cited by 15 publications

(4 citation statements)

References 8 publications

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“…Geopolymers have been developed in recent years as a new type of cementitious material with excellent performance [2]. Traditional permeable concrete mainly consists of silicate cement, coarse aggregate, admixture and water, and according to its performance design, a small amount of fine aggregate and mineral admixture can be added; however, there are problems with this type of concrete, such as low strength and poor durability after hardening [3]. Alkali-activated geopolymer cementitious materials are not only environmentally friendly but also have excellent engineering performance; therefore, they are regarded as advanced green cementitious materials with excellent performance that can replace the cement matrix and have great development potential [4].…”

Section: Introductionmentioning

confidence: 99%

“…After hardening, traditional permeable concrete has low strength, poor durability and other problems [3], and compared to ordinary silicate concrete, after hardening, geopolymer concrete has high strength and good resistance to acid, alkali and salt corrosion, but its brittleness is more pronounced. A study showed that the addition of steel fibers can improve the mechanical properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties of Fiber-Reinforced Permeable Geopolymer Concrete

Xu,

Liu,

Ding

et al. 2023

Materials

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In this paper, permeable geopolymer concrete with high compressive strength and permeability is prepared using alkali-activated metakaolin as a slurry, and its mechanical properties are reinforced by adding steel fibers. The influencing factors of the strength, porosity and permeability coefficient of the fiber-reinforced permeable geopolymer concrete, as well as its microstructure and curing mechanism, are determined by conducting an unconfined compressive strength test, scanning electron microscopy, energy-dispersive spectroscopy and X-ray diffraction. The test results show that, under the water permeability required to meet the specification conditions, when the alkali activator modulus is 1.4 and the activation-to-solid ratio is 0.9, the effect of metakaolin activation is the most obvious, and the unconfined compressive strength of the permeable geopolymer concrete is the highest. Moreover, the paste formed via the alkali activation of metakaolin contains a large number of silica–oxygen and aluminum–oxygen bonds with a dense and crack-free structure, which enables the paste to tightly combine with the aggregates; the strength of the permeable geopolymer concrete is early strength, and its strength at a curing age of 3 days is the highest. The strength at a curing age of 3 days can reach 43.62% of the 28-day strength; the admixture of steel fiber can effectively improve the strength of the permeable concrete, and with an increase in the amount of admixture, the strength of the fiber shows a trend of increasing, and then decreasing. Under the conditions of this test, a volume of steel fiber of 0.3% enables the optimum unconfined compressive strength to be reached.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Fiber-Reinforced Permeable Geopolymer Concrete

Xu,

Liu,

Ding

et al. 2023

Materials

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“…Geopolymer binders are formulated by combining aluminosilicate materials and an alkaline activator solution. Several studies have investigated different types and combinations of aluminosilicate materials and alkaline activator solutions in forming the geopolymer binder [5], [10]- [12]. The properties of the geopolymer binder may differ depending on the characteristics of the aluminosilicate materials, the composition of the alkaline activator, and the curing condition adopted.…”

Section: Introductionmentioning

confidence: 99%

Performance of Hybrid Glass Fiber-Reinforced Slag-Fly ash Blended Geopolymer Concrete

Zuaiter¹,

El-Hassan²,

El‐Maaddawy³

et al. 2023

Proceedings of the 8th International Conference On Civil, Structural and Transportation Engineering (ICCSTE 2023)

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This study evaluates the effect of different combinations and volume fractions of hybrid glass fibers (GF) addition on the properties of slag-fly ash blended geopolymer concrete. Two types of GF (A and B) with different lengths (24 and 43 mm) were considered. GF were incorporated solely or in a hybrid combination. Three combinations of hybrid GF were used with A:B ratios of 3:1, 1:1, and 1:3 at a fixed volume fraction of 1%. Three volume fractions (0.5, 1.0, and 1.5%) were utilized with a GF hybrid combination having A:B ratio of 1:1. The performance was characterized by the workability, 1-and 7-day compressive strength, and 7-day splitting tensile strength. The experimental test results showed that the addition of GF had an adverse effect on the geopolymer concrete workability. Yet, mixes with hybrid GF were more workable than counterparts made with a single type of GF. Furthermore, the addition of hybrid GF combinations increased the compressive and splitting tensile strength by up to 26 and 59%, respectively, compared to the plain control mix. Increasing the hybrid GF volume fractions up to 1% enhanced the strengths. Superlative strengths were noted upon incorporating more long GF in the hybrid GF combination, i.e., the mix having A:B ratio of 1:3. Findings highlight the ability to improve the hardened properties of slag-fly ash blended geopolymer concrete using hybrid GF while maintaining adequate workability.

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“…They concluded that the pervious concretes produced in the work were not only environmentally friendly, but also achieved higher mechanical properties and water permeability than cement pervious concretes. Azad, Anshul, Azad, Samarakoon, Yadav, Bherwani, and Gebremariam [8] studied the development of geopolymer pervious concrete (GPC). Different geopolymeric compositions were mixed with aggregates of 10 mm and 20 mm and using different binder to aggregate ratios.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Pervious Cement and Pervious Geopolymer Concretes Using Sea Sand and Seawater

Nguyen-Van¹

2022

GEOMATE

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Normal pervious concrete is a special type of concrete with high porosity, allowing water to percolate into the subgrade and using Portland cement. Pervious geopolymer concrete is also an environmentally friendly concrete using fly ash, blast furnace slag and kaolinite alkaline activator. However, all previous cement and geopolymer concretes are produced with normal sand and clean water. This study presents an experimental program on two types of concrete, viz. pervious cement concrete (PCC) and pervious geopolymer concrete (PGC), both made of sea sand and seawater. The compressive strength and hydraulic properties of those concretes have been investigated, showing that they have acceptable properties and a great potential to replace normal pervious concrete near coastal areas with low traffic density, viz., pavements, parking lots. It is possible to produce PCC and PGC made by sea sand and sea water achieving the compressive strength of cylinder samples greater than 17 MPa at a porosity of 24%.

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Pervious geopolymer concrete as sustainable material for environmental application

Cited by 15 publications

References 8 publications

Mechanical Properties of Fiber-Reinforced Permeable Geopolymer Concrete

Mechanical Properties of Fiber-Reinforced Permeable Geopolymer Concrete

Performance of Hybrid Glass Fiber-Reinforced Slag-Fly ash Blended Geopolymer Concrete

Experimental Study on Pervious Cement and Pervious Geopolymer Concretes Using Sea Sand and Seawater

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