The Effect of Different Crumb Rubber Loading on the Properties of Fly Ash-Based Geopolymer Concrete

Azmi, Ahmad Azrem; Ghazali, Che Mohd Ruzaidi; Ahmad, Romisuhani; Musa, Luqman; Rou, Low Sheau

doi:10.1088/1757-899x/551/1/012079

Cited by 9 publications

(6 citation statements)

References 6 publications

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“…The aggregates used for the study include fine and coarse natural aggregates classified based on size. Table 2 shows that except Azmi et al [40], most research used river sand as fine aggregates. RuGPC is made using a range of coarse aggregates, including crushed basalt [28], crushed dolomite [19], and crushed gravel [17,38].…”

Section: Constituents Of Rugpcmentioning

confidence: 99%

“…The specimens fail quite soon resulting from the cracks quickly developing around the rubber particles while loading IOP Publishing doi:10.1088/1755-1315/1149/1/012009 8 [5]. When rubber particles and geopolymer paste are not properly bonded, applied forces are not distributed evenly, which can cause cracks [5,20,40]. Another reason for lower compressive strength is rubber's susceptibility to rising during vibration as a result of its low specific gravity and deficiency of adhesion to other concrete components, which results in the top layer having a larger concentration of rubber ending up in a non-homogeneous concrete [5,42].…”

Section: Compressive Strengthmentioning

confidence: 99%

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Rubberized Geopolymer Mortar and Concrete: A Comprehensive Review.

Raj

Sarath

Nagarajan

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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In many crucial structural applications, a material’s ability to withstand impact is of the utmost importance. The use of crumb rubber particles as a partial replacement of natural aggregates forms rubberized geopolymer concrete (RuGPC), which is found to have great impact resistance and energy absorption capacity. Geopolymer paste and natural aggregates alone are weak in handling the impact loads. The field of Civil engineering has been looking into ways for the last few years to use solid waste and ecologically friendly raw materials as components of concrete in building to embrace sustainability. Greenhouse gas emissions from cement manufacturing and the depletion of natural aggregates are two major issues the construction industry is currently experiencing. RuGPC, which combines the benefits of geopolymer concrete (GPC) and rubberized concrete to create a practical, sustainable building material, has been a hot topic for the past few years. In this paper, the fresh properties, strength and durability characteristics, mixing procedure and curing properties, dynamic and impact properties, microstructures and thermal properties of rubberized geopolymer mortar and concrete are comprehensively reviewed.

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Section: Constituents Of Rugpcmentioning

confidence: 99%

Section: Compressive Strengthmentioning

confidence: 99%

Rubberized Geopolymer Mortar and Concrete: A Comprehensive Review.

Raj

Sarath

Nagarajan

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…It can be concluded that the waterabsorption capacity of rubberized geopolymer concrete increases with increasing crumb rubber content. This is because the number and size of voids in the geopolymeric concrete microstructure increased [48]. The evaporation of water content and the lower degree of mix compaction due to the light weight of rubber lead to the formation of more voids in the interfacial transition zone between the geopolymer matrix and the rubber waste aggregate compared with the geopolymer concrete mix not containing crumbed rubber waste aggregate.…”

Section: Water Absorptionmentioning

confidence: 99%

Properties of modified metakaolin-based geopolymer concrete with crumbed rubber waste from damaged car tires

Al Obeidy,

Khalil

2023

Res. Eng. Struct. Mat.

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Waste rubber tires are materials that have a negative impact on the environment. Therefore, it is essential to use waste rubber recycled from damaged tires (CRWA) in geopolymer concrete (GPC) by different partial volumetric replacements to natural coarse aggregate (0, 10, 20, 25%) after preparation to a gradation similar to that for natural coarse aggregate. Calcium oxide and silica fume were substituted in metakaolin (MK) at 5 wt%. The GPC mix consisted of MK after modification, coarse aggregate, fine aggregate sodium hydroxide solution, sodium silicate solution, superplasticizer, and extra water, with quantities of 372, 911, 83, 192, 4, and 52 kg/m3, respectively. It is clear from the experimental results that the mechanical properties of geopolymer concrete decreased with the increase in the content of the crumbed rubber waste aggregate. The compressive, splitting tensile, and flexural strengths decreased by approximately 38.6, 44.6, and 52.6%; 10.6, 15.2 and 21.2%; and 6.25, 12.75, and 16.5% when the crumbed rubber aggregate was 10, 20 and 25%, respectively. In addition to recycling the rubber waste from damaged tires, desirable properties can be obtained, starting from not using water in curing GPC and rapid strength development at early ages. There is a clear improvement in the thermal properties and weight of GPC containing CRWA by reducing the thermal conductivity and dry density by including 10, 20, and 25% CRWA compared with the reference GPC without this waste material.

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“…[106], yet the majority of studies adopted a ratio between 1.5 and 2.5 [6,7,12,20,54,72,76,96]. Besides the molarity of NaOH solution and Na2SiO3/NaOH ratio, GeoPC is affected by the ratio of alkaline activator-toaluminosilicate precursor which, as indicated in Table 1, varied in RuG studies between 0.152 [65] and 0.85 [73], with an optimum value of 0.4 [6,7,12,20,72,96,107].…”

Section: Alkaline Solutionsmentioning

confidence: 99%