Utilisation of Waste-Based Geopolymer in Asphalt Pavement Modification and Construction—A Review

Milad, Abdalrhman; Ali, Ahmed Suliman B.; Babalghaith, Ali Mohammed; Memon, Zubair Ahmed; Mashaan, Nuha S.; Arafa, Salaheddin; Yusoff, Nur Izzi Md.

doi:10.3390/su13063330

Cited by 47 publications

(19 citation statements)

References 81 publications

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“…Table 2 presents the chemical composition of CBA from various power plants, where the percentages of the chemical composition are expressed by mass. Silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), and calcium oxide (CaO) are the primary mineral compounds in coal rock [35]. The chemical composition of CBA comprises the major and minor components.…”

Section: Chemical Propertiesmentioning

confidence: 99%

A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

et al. 2021

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One effective method to minimize the increasing cost in the construction industry is by using coal bottom ash waste as a substitute material. The high volume of coal bottom ash waste generated each year and the improper disposal methods have raised a grave pollution concern because of the harmful impact of the waste on the environment and human health. Recycling coal bottom ash is an effective way to reduce the problems associated with its disposal. This paper reviews the current physical and chemical and utilization of coal bottom ash as a substitute material in the construction industry. The main objective of this review is to highlight the potential of recycling bottom ash in the field of civil construction. This review encourages and promotes effective recycling of coal bottom ash and identifies the vast range of coal bottom ash applications in the construction industry.

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Section: Chemical Propertiesmentioning

confidence: 99%

A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

et al. 2021

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“…Asphalt binders can be made harder by modification. Different types of modifiers were tried worldwide to enhance the rheological properties of asphalt binder, such as polymers [1][2][3][4][5][6], crumb rubber [5,[7][8][9][10][11], waste plastic [12][13][14][15][16], geopolymers [17], and nano-materials [18][19][20][21]. Polymers are commonly used to modify and improve the rheological properties of asphalt binders.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and Comparison of Mechanical Properties of Polymer-Modified Asphalt Mixtures

et al. 2021

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Polymer modification is extensively used in the Kingdom of Saudi Arabia (KSA) because the available asphalt cement does not satisfy the high-temperature requirements. It was widely used in KSA for more than two decades, and there is little information regarding the differences in the performance of different polymers approved for binder modification. Pavement engineers require performance comparisons among various polymers to select the best polymer for modification rather than make their selection based on satisfying binder specifications. Furthermore, the mechanical properties can help select polymer type, producing mixes of better resistance to specific pavement distresses. The study objective was to compare the mechanical properties of the various polymer-modified asphalt (PMA) mixtures that are widely used in the Riyadh region. Control mix and five other mixes with different polymers (Lucolast 7010, Anglomak 2144, Pavflex140, SBS KTR 401, and EE-2) were prepared. PMA mixtures were evaluated through different mechanical tests, including dynamic modulus, flow number, Hamburg wheel tracking, and indirect tensile strength. The results show an improvement in mechanical properties for all PMA mixtures relative to the control mixture. Based on the overall comparison, the asphalt mixture with polymer Anglomk2144 was ranked the best performing mixture, followed by Paveflex140 and EE-2.

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“…As for the alkaline activated blast furnace slag (AAS), which, according to Davidovits [ 16 ] it is not a geopolymer, Głuchowski [ 17 ] had the greatest contribution. The development of knowledge about AAS and geopolymers continues [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. The works on the issues of CO 2 reduction in construction is carried out intensively around the world and the manufactured products have various terms: “green concrete”, “green cement” and “eco-concrete” [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

Self-Immobilizing Metals Binder for Construction Made of Activated Metallurgical Slag, Slag from Lignite Coal Combustion and Ash from Biomass Combustion

Słomka-Słupik

2021

Materials

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Research on the effective use of secondary products is gaining more and more importance in Poland due to the intensively implementing idea of the circular economy. The solution used in this work are one of many tests useful in construction. The subject of this work was therefore the formation and testing of a new ecological construction binder, in particular for mortars or prefabricated elements working in the environment with high humidity. The binder was made of alkaline activated ground granular blast furnace slag (AAS), fly ash from biomass combustion (BFA) and furnace slag from brown coal combustion (LFS). The mixture was modified by introducing the zeolite to check the degree of metals immobilization contained in the ingredients of the mixture. A series of three mixtures were prepared: without and with zeolite soaked in distilled water or calcium nitrate. The strength of binders in time in dry and wet curing were tested and compared with the microstructure. The maximum compressive strength values at the eighth week were about 30 MPa. The strength values after 4 weeks of dry and wet curing were also compared. It was shown that 28-day wet curing increased the bending strength of the beams more than twice, but slightly decreased the compressive strength. The microstructure of the mixture with the highest values of compressive strength was the densest and the one with the lowest values of compressive strength, the most loosened with the most differentiated topographically fracture. The impregnation of zeolite with calcium nitrate decreased the compressive strength of the binder significantly. The bending strength of samples curing in dry conditions decreased during hardening. The results of the metals leaching test showed that the mixtures were safe for the environment, and due to the impregnation of zeolite with calcium nitrate, the binding effect of copper and zinc in the first weeks was greater than in the other mixtures.

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Utilisation of Waste-Based Geopolymer in Asphalt Pavement Modification and Construction—A Review

Cited by 47 publications

References 81 publications

A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

Evaluation and Comparison of Mechanical Properties of Polymer-Modified Asphalt Mixtures

Self-Immobilizing Metals Binder for Construction Made of Activated Metallurgical Slag, Slag from Lignite Coal Combustion and Ash from Biomass Combustion

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