Performance of surface modification on bio-based aggregate for high strength lightweight concrete

Yew, Ming Kun; Beh, Jing Han; Lee, Foo Wei; Saw, Lip Huat; Lim, Siong Kang

doi:10.1016/j.cscm.2022.e00910

Cited by 6 publications

(4 citation statements)

References 31 publications

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“…The fine sand used has a specific gravity (SG), fineness modulus and water absorption of 2.68, 2.78 and 0.98%. Furthermore, Crushed oil palm shell aggregate was used as a replacement for fine sand with SG between 1.17 and 1.62 [4]. OPS were sieved by using 4.75 mm and 2.00 mm to achieve a homogenous mix.…”

Section: Materials and Me Thodsmentioning

confidence: 99%

Strength and Acoustics Properties of Lightweight Foamed Concrete Incorporating of Bio-Based Aggregate

Yong,

Yew,

Sieng

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This paper investigates the incorporation of bio-based aggregate in lightweight foam concrete (LWFC). The aim of this research is to determine the strength and acoustics properties of lightweight foamed concrete incorporating 5% bio-based aggregate (LWFC-OPS5). A targeted density of 1100 +/- 100 kg/m3 of LWFC-OPS5 is produced and achieved a compressive strength of 3 MPa. A total of six mixes containing different water to cement (w/c) ratios 0.52, 0.56 and 0.60 with 0% and 5% of OPS replacement were designed. From the result, LWFC-OPS5-0.52 had showed the highest strength properties at 28 days, which are recorded at 3.59 MPa and 1.75 MPa respectively. It also showed the highest density among the LWFC-OPS5 mix design which is 1180 kg/m3 under fresh density conditions. LWFC-OPS5-0.56 has showed the most significant increase in compressive strength and flexural strength at 28 days, which have an increment of 30 - 40% from 7 days’ results. On the other hand, LWFC-OPS5-0.60 has increased about 36.81%, 32.73% and 63.83% compared to LWFC-CTR. All cube specimens have achieved above 3 MPa of compressive strength except LWFC-OPS5-0.60 due to its lowest fresh density. From the acoustics properties test results, LWFC-OPS5-0.56 had showed the maximum sound absorption coefficient. Thus, this research proved that LWFC-OPS5 can be used for different applications such as wall panels, roof tiles, sound barriers and etc.

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Section: Materials and Me Thodsmentioning

confidence: 99%

Strength and Acoustics Properties of Lightweight Foamed Concrete Incorporating of Bio-Based Aggregate

Yong,

Yew,

Sieng

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…The compressive strength of LWHSC can be predicted by using SPSS [13], an artificial neural network [14], and a support vector machine [15]. LWHSC has a reduction in its strength and density due to the incorporation of lightweight aggregates involving pumice [16], expanded slate and polystyrene [17,18], perlite [19], polymer emulsion [20], cenosphere [21], and straw and oil palm [22,23].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation into Lightweight High Strength Concrete with Shale and Clay Ceramsite for Offshore Structures

Li,

Fan

et al. 2024

Sustainability

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To develop lightweight high-strength concrete (LWHSC) for offshore structures in a harsh seawater environment, LWHSC with shale and clay ceramsites was designed. LWHSC was experimentally investigated in terms of density, compressive strength, and durability in a coastal environment. Then, its feasibility for offshore structures was also assessed. The results show that the compressive strength and oven dry density of LWHSC appropriately improve with increases in cement content, while they are reduced by the replacement of shale ceramsite with clay ceramsite. The compressive strength of LWHSC also increases first and then decreases with an increase in the pre-wetting of shale and clay ceramsites. Their optional pre-wetting time is about 0.5 h. LWHSC exhibits a higher brittleness compared with conventional concrete. LWHSC has increases in the resistances of freeze–thaw, carbonization, water penetration, and chloride penetration when the shale and clay ceramsite light aggregates decrease in the concrete. The LWHSC prepared in this paper is suitable for the harsh seawater environment of offshore oil platforms but is limited to the southern region where there is no requirement for the freeze–thaw resistance of concrete. The results of this study can provide some reference for the application of LWHSC in offshore structures and other similar aspects of engineering.

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“…Therefore, the utilization of unwanted waste from agricultural activities such as OPS in concrete can provide sustainable development of construction by contributing to reducing greenhouse gas emissions. Many scientists have found that the utilization of effective surface modification methods on plant-based aggregates can produce better concrete quality [18][19][20][21][22][23]. The modification techniques consist of carbonization, particle shaping, microwave heating and soaking of chemical solutions to enhance bonding.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pre-Soaking Treatment Method of Plant-Based Aggregate on the Properties of Lightweight Concrete—Preliminary Study

Yew

Beh

et al. 2023

Coatings

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This research investigates the effect of pre-soaking treatment on plant-based aggregate using a wet grout binder to formulate a high-strength lightweight concrete (HSLWC). Surface modification utilising a novel grout soaking technique with various water-to-cement (w/c) ratios has indicated a new method of approach for the recent development of lightweight plant-based aggregate (LWPA). In this experiment, the fresh and hardened properties of modified LWPA lightweight concrete were assessed by verifying their workability, densities, compressive and split tensile strengths towards the modulus of elasticity. The results showed that pre-soaking plant-based lightweight aggregate (w/c: 0.6, 0.8, 1.0 and 1.2) slightly increased the density of the samples compared to untreated LWPA. The oven-dry density of treated and untreated LWPA is controlled in the range of HSLWC. The outcomes indicated that the workability of the surface-modified LWPA is significantly improved: up to 40% in 6 min for the (TDS)/0.6 sample compared to the original LWPA. The mechanical properties of the LWPA concrete with the surface modification method exhibit a substantial increment of compressive strength, split tensile strength and the modulus of elasticity; recorded at 22%, 26% and 34%, respectively. Significantly, the findings from this experiment reveal that the pre-soaking treatment method on LWPA is shown to be a highly recommended technique in improving interfacial bonding while maintaining its performance as one of the most promising solutions to improve the properties of lightweight concrete.

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Performance of surface modification on bio-based aggregate for high strength lightweight concrete

Cited by 6 publications

References 31 publications

Strength and Acoustics Properties of Lightweight Foamed Concrete Incorporating of Bio-Based Aggregate

Strength and Acoustics Properties of Lightweight Foamed Concrete Incorporating of Bio-Based Aggregate

Experimental Investigation into Lightweight High Strength Concrete with Shale and Clay Ceramsite for Offshore Structures

Effect of Pre-Soaking Treatment Method of Plant-Based Aggregate on the Properties of Lightweight Concrete—Preliminary Study

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