Mechanical properties of basalt fiber reinforced magnesium phosphate cement composites

Qin, Jihui; Qian, Jueshi; Li, Zhen; You, Cuihong; Dai, Xiaobing; Yue, Yanfei; Yang, Fan

doi:10.1016/j.conbuildmat.2018.08.044

Cited by 89 publications

(43 citation statements)

References 28 publications

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“…However, the cohesiveness of the composites improved with addition of basalt fiber. Similar results were found in Li et al [40], Qin et al [41], and Sadrmomtazi et al [42]. Further, the composites are said to be workable if the flow values are approximately 150 mm [43].…”

Section: Sample Preparationsupporting

confidence: 84%

“…The rate of increase was reported higher at early ages. Similar results can be found in [41][42][43]45,47,48]. Figure 9 shows a sulfate-resistance test for basalt-reinforced bottom ash cement paste composites at 28 and 56 days of curing.…”

Section: Sample Preparationsupporting

confidence: 80%

“…This can also prove that more paste formation causes more reduction. The same findings can be found in [31,41]. Based on the DUW values, all composites can be categorized as lightweight material; further, composites could be an alternative sustainable building material for the construction sector.…”

Section: Sample Preparationsupporting

confidence: 67%

“…The increase for water demand due to addition of basalt fiber, especially at higher volume fraction, can be considered another factor for such increase. Compatible results can be found in [41,43,45,46]. Figure 6 shows the water absorption (WA) values for basalt-reinforced bottom ash cement paste composites at 7, 28, and 56 days of curing.…”

Section: Sample Preparationmentioning

confidence: 72%

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Fiber-Reinforced Cement Paste Composites for Better Sustainability

Hanafi¹,

Aydın²,

Ekinci³

2020

Preprint

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Extinction of natural resources builds up pressure on governments to invest in research to find more sustainable resources for construction sector. Earlier studies on mortar and concrete show that bottom ash and basalt fiber are independently alternative binder in the concrete sector. This study aims to use bottom ash and basalt fiber blends as alternative novel-based composites in pure cement paste. Strength and durability properties of two different percentages of bottom ash (40% and 50%) and three volume fractions of basalt fiber (0.3%, 0.75%, and 1.5%) were used at three curing periods (7, 28, and 56 days). In order to measure physical properties of the basalt-reinforced bottom ash cement paste composites flowability, dry unit weight, porosity and water absorption measurements at 7, 28, and 56 days of curing were performed. Furthermore, mechanical properties of composites determined by unconfined compressive strength and flexural strength tests. Finally, to assess the durability sulfate-resistance and seawater-resistance tests have been performed on composites at 28 and 56 days of curing. Results showed that addition of basalt fiber improves physical, mechanical and chemical stability properties of paste up to a limiting basalt fiber addition (0.3% volume fraction) where above an adverse effect have been monitored. It is clear that observed results can lead to development of sustainability strategies in the concrete industry by utilizing bottom ash and basalt fiber as an alternative binder.

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Section: Sample Preparationsupporting

confidence: 84%

Section: Sample Preparationsupporting

confidence: 80%

Section: Sample Preparationsupporting

confidence: 67%

Section: Sample Preparationmentioning

confidence: 72%

See 2 more Smart Citations

Fiber-Reinforced Cement Paste Composites for Better Sustainability

Hanafi¹,

Aydın²,

Ekinci³

2020

Preprint

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“…Potassium magnesium phosphate cement (Potassium magnesium phosphate cement, MgKPO4·6H2O, code MKPC) is a new type of inorganic cementing material that possess advantages such as quick hardness and early strength, strong adaptability to environmental temperature, high bond strength with old concrete, small volume deformation, and resistance to abrasion, frost, and salt frost erosion [1][2][3][4]. Moreover, because of the hydration mechanism and the particularity of cement raw materials, MKPC shows excellent protection for reinforcement [5,6] and shows very good compatibility with fibers [7][8][9], and has considerable development potential in marine concrete [10,11]. Currently, MKPC is primarily used as a fast repair material and other its applications in engineering are rarely reported.…”

Section: Introductionmentioning

confidence: 99%

The Influence and Action Mechanization of Mineral Mixed Material on High Fluidity Potassium Magnesium Phosphate Cement (MKPC)

Zou

et al. 2020

J. Compos. Sci.

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Potassium magnesium phosphate cement (MKPC) is a type of chemically bonded ceramic material that has higher performance compared to traditional Portland cement. To develop the spraying and crack pouring process of MKPC, the mechanical properties, volume deformation, hydration temperature, and water stability of the high-fluidity MKPC with different mineral mixed materials and their influence laws were studied. The effects of phase composition and micromorphology of hydration products on the properties of MKPC and its mechanism were analyzed using X-ray diffraction (XRD), thermogravimetry/differential thermal analysis (TG/DTA), and scanning electron microscopy (SEM). The results show that fly ash and metakaolin will not reduce the fluidity of MKPC paste because of their material properties, and silica fume will reduce the fluidity of MKPC paste because of its large specific surface area and high water absorption. Metakaolin can react with phosphate to form aluminum phosphate gel and fill the pores between the crystals because it has a higher activity, which can significantly improve its compressive strength. However, during the later stage of hydration, there will be slight expansion, which would reduce its bonding flexural strength. The MKPC-hardened paste mixed with silicon ash has optimal stability: therefore, it has the highest bonding flexural strength. Microcosmic analysis shows that mineral mixed material plays a physical filling role and participates in the hydration reaction as an active ingredient to improve the early hydration degree, which can change the crystal size and micromorphology of MKPC-hardened paste and make the structure more compact.

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