Development of Thermal Insulating Lightweight Foamed Concrete Reinforced with Polypropylene Fibres

Jhatial, Ashfaque Ahmed; Goh, Wan Inn; Mohamad, Noridah; Rind, Touqeer Ali; Sandhu, Abdul Razzaque

doi:10.1007/s13369-020-04382-0

Cited by 43 publications

(23 citation statements)

References 16 publications

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“…The unusual changes could be ascribed to the non-uniform distribution of PP fiber in the figure for 0.9% fiber content. For other samples reinforced by PP fiber, fibers were distributed more uniform, it made more pores in these specimens after drying because PP fiber was a hydrophobic material and retained water [2], [21]. As the above discussion, during the hardening process, there are more empty air voids due to the retained water being dried out.…”

Section: Thermal Conductivitymentioning

confidence: 81%

Experimental Research on the Performance of Polypropylene Fiber Foamed Ultra-lightweight Composites

Huynh¹,

Pham²,

Lam³

et al. 2020

cea

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This experimental study was conducted to evaluate the effect of polypropylene (PP) fibers added into pre-foamed ultra-lightweight composites (PULC) with a target dry density of 600 kg/m 3. In this research, four PULC mixtures were designed with various PP fiber contents of 0, 0.4, 0.9, 1.4% by total weight of binder while other ingredients, including cement, fly ash (FA), slag, water, and stone powder, were kept constant. The dosage of foam and superplasticizer was adjustable to achieve the same target dry density and workability of the PULC mixtures. The PULC samples were prepared in the laboratory. After casting, these samples were stored at the room temperature condition until the required ages to implement to test. Engineering properties of the PULC samples, including compressive strength, the dry density, the water absorption, the drying shrinkage, the thermal conductivity, and the microstructure analysis, were tested to evaluate the performance as well as the potential application of such materials in reality. The experimental results show that for the specimen of 0.9% PP fiber content, the fiber addition helped to improve and enhance its compressive strength reaching the value within the range of 2.5÷3.2MPa. Furthermore, the thermal conductivity and the drying shrinkage decreased while the dry density gained a range of 639÷643 kg/m 3. This research further indicated that 0.9% of PP fiber content was the optimal dosage and it also demonstrated a significant influence of the application PP fiber into the production of PULC.

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Section: Thermal Conductivitymentioning

confidence: 81%

Experimental Research on the Performance of Polypropylene Fiber Foamed Ultra-lightweight Composites

Huynh¹,

Pham²,

Lam³

et al. 2020

cea

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“…The specimens, which were air-cured for 28 days, were insulated on all sides except on the top with polystyrene sheets, such that the heat transfer due to solar radiation was 1-dimensional. Infrared thermometer (Jhatial et al, 2020c;Bevilacqua et al, 2017) was used to record the surface temperature of the specimens from 10:00 A.M. to 4:00 P.M. All the readings were taken at intervals of 15 minutes for three consecutive days (Anting et al, 2018). The surface temperature of each specimen was taken at five random points on the exposed surface.…”

Section: Thermal Performancementioning

confidence: 99%

“…Since the surface temperature was a nondestructive test method, the same panels were used for thermal conductivity testing using the guarded hot plate method as prescribed in BS EN 12664:2001, and the procedure is explained by the authors in their earlier works (Jhatial et al, 2020c;Jhatial et al, 2020d).…”

Section: Thermal Performancementioning

confidence: 99%

Thermomechanical evaluation of sustainable foamed concrete incorporating palm oil fuel ash and eggshell powder

Jhatial

Goh²,

Mohamad³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

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Increased usage of concrete contributes to urban thermal discomfort due to the Urban Heat Island effect. At the same time, the corresponding increased consumption of cement also causes a significant rise in carbon dioxide (CO2) gas emissions. This experimental work aims at evaluating the thermal and mechanical performance of 1800 kg/m3 dry density green sustainable foamed concrete (GFC) incorporating agroindustrial waste such as Palm Oil Fuel Ash (POFA) and Eggshell Powder (ESP) as supplementary cementitious materials (SCMs). The POFA content varied from 15 to 35%, with increments of 5%, while being supplemented with 5% ESP. To evaluate the performance of the developed GFC, the flowability, mechanical strengths (compressive and splitting tensile strengths), and thermal performances (thermal conductivity and surface temperature) were investigated. Incorporation of 15-25% of POFA supplemented with 5% ESP as partial cement replacement materials resulted in enhanced mechanical strengths. Although usage of POFA can reduce the thermal conductivity, the POFA content must be limited to 15–25% to prevent excessive heat absorption by the exterior surface of the concrete. Overall, the optimum use of 15% POFA in a combination of 5% ESP is desirable to produce an eco-friendly sustainable foamed concrete.

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“…At the same time, the existence of cell structure will inevitably enhance its ability of heat insulation, sound insulation, and energy absorption. [ 5,6 ] Using it instead of neat polypropylene or other foaming materials can not only reduce the use of raw materials, but also reduce overall quality to reduce energy consumption. [ 7,8 ] Which gives microcellular foam PP great application potential in automobile, construction, aviation, industry, and agriculture.…”

Section: Introductionmentioning

confidence: 99%

Preparation Process Orthogonal Optimization and Mechanical Properties of Microcellular Foam Polypropylene

Huang

Qin

et al. 2021

Macro Materials & Eng

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Melt strength, pressure and the amount of gas have significant effects on the foaming of polypropylene (PP). It is convenient to study the influence of these factors on foaming effect by orthogonal test. The experiment result shows that within the set factors and levels, the improvement of melt and the concentration of foaming masterbatch has the greatest influence on the cell size and density of foamed PP, respectively. When the concentration of azodicarbonamide (ADC) is 15 %, PP/ethylene‐propylene terpolymer (EPDM) = 90:10, and SiO2 content is 3%, the foaming effect is the best. At this time, the cell diameter decreases by 42.7%, cell density increases by more than 7.5 times compared with that without optimization. Material density decreases from 0.92 to 0.56 g cm−3. It is also found that good closed‐cell structure can improve the bending and impact properties of PP in varying degrees, especially the impact strength is 55.7% higher than that of neat PP. Finally, the promoting mechanism of cell structure on mechanical properties of materials is discussed, which is of great significance for the preparation of microfoamed PP materials and the deep research of its cell structure.

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Development of Thermal Insulating Lightweight Foamed Concrete Reinforced with Polypropylene Fibres

Cited by 43 publications

References 16 publications

Experimental Research on the Performance of Polypropylene Fiber Foamed Ultra-lightweight Composites

Experimental Research on the Performance of Polypropylene Fiber Foamed Ultra-lightweight Composites

Thermomechanical evaluation of sustainable foamed concrete incorporating palm oil fuel ash and eggshell powder

Preparation Process Orthogonal Optimization and Mechanical Properties of Microcellular Foam Polypropylene

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