Experimental Study on the Thermal Performance of Rice Straw-Mortar Composite Materials

Zhao, Rongfei; Qin, Yan; Guo, Hongxu; Zhang, Huaqian; Gao, Wei; Wang, Tieliang

doi:10.1007/s12205-021-0087-9

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…A signi cant reduction in FS was observed with increasing PLSF ratios, reaching to about 46.74% for the HSC mixture with 3% PLSF. This reduction can be attributed to the formation of a weaker connection between PLSF and the HSC matrix, as well as the conglomeration of PLSF within the mixture [72,73]. In contrast, the reduction in FS for the mixes with 2% and 3% RSF was relatively small, nearly 12.88% and 9.85%, respectively, compared to the control mix.…”

Section: Flexural Strength (Fs)mentioning

confidence: 92%

Improvement the brittle Resistance of High-Strength Concrete through Palm Leaf Sheath Fibers and Rice Straw Fibers

defalla,

Osama,

Shubbar

et al. 2024

Preprint

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The use of natural fiber waste presents a potential solution to address both environmental problems associated with agricultural waste and the issue of sudden failure in high-strength concrete (HSC). In this research, the effects of incorporating two fiber waste in HSC was investigated. Seven HSC mixes were prepared, including three with Rice Straw Fibers (RSF), three with palm leaf sheath fiber (PLSF), and one control mix without fibers. The volume fractions of the RSF and PLSF used in this research ranged from 1–3%, with an aspect ratio of 100. Several tests were conducted to evaluate the different properties of the HSC this including slump test, compressive strength, tensile strength, flexural strength, and modulus of elasticity, were evaluated all mixtures. Results indicated that the addition of natural fiber did not significantly enhanced the compressive strength, while, the tensile and flexural strength of HSC increased, particularly when incorporating 1% RSF. RSF exhibited a more significant improvement in the properties of HSC when compared to PLSF. However, both types of fibers were effective in strengthening the HSC's brittleness behaviour.

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Section: Flexural Strength (Fs)mentioning

confidence: 92%

Improvement the brittle Resistance of High-Strength Concrete through Palm Leaf Sheath Fibers and Rice Straw Fibers

defalla,

Osama,

Shubbar

et al. 2024

Preprint

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show abstract

“…It provides a means to store carbon for traditional building materials such as concrete and to reduce the reliance on other energy-intensive materials. Adding straw fiber to standard building materials can improve the thermal insulation performance of composite materials by 85-90% and reduce the thermal conductivity of composite materials [3][4][5][6][7][8]. Many factors affect the thermal properties of composite materials, including the straw content, pretreatment time, sodium hydroxide concentration, straw variety, etc.…”

Section: Introductionmentioning

confidence: 99%

Optimization Research of Sodium Hydroxide Pretreatment to Enhance the Thermal Properties of Straw–Mortar Composite Materials

Zhao,

Fu,

Feng

et al. 2024

Sustainability

Self Cite

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Although straw is being utilized as an additive in construction materials, the thermal properties of straw and building materials in combination are insufficient. The thermal properties of straw–mortar composite materials can be improved by the pretreatment of straw. The alkali treatment enhances the mechanical attachment between the fibers and the matrix material, assuring that the straw–mortar composite materials have solid thermal insulation characteristics. Pretreatment with sodium hydroxide was utilized in this work to enhance the thermal properties of straw–mortar composite materials. This study mainly investigated the thermal properties of straw–mortar composite material after sodium hydroxide pretreatment and its change rules under the condition of the freeze–thaw cycle. A three-factor, three-level Box–Behnken experimental design, with the straw content (%), pretreatment time (min), and reagent concentration (%) as process parameters, was used. The response variables were the thermal conductivity, thermal diffusivity, and thermal resistance. The findings revealed that all of the variables had a substantial impact on the replies. Optimization parameters of 17.95% for the straw content, 19.50 min for the pretreatment time, and 4.99% for the reagent concentration for the straw–mortar composite materials were achieved. A thermal conductivity of 0.211 W·(m·K)−1, a thermal diffusivity of 0.277 mm2·s−1, and a thermal resistance of 57.211 K·W−1 were the optimal thermal property indices. Furthermore, during the freeze–thaw cycle, the thermal conductivity coefficient and thermal diffusion coefficient of the combined pretreatment composite were 26% and 9% lower than the materials without the treatment. The thermal performance of the mortar composites prepared by alkali-treated straw was better than that prepared by untreated straw.

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A review on recent eco-friendly strategies to utilize rice straw in construction industry: pathways from bane to boon

Rajput

Gupta

Bansal

2022

Environ Sci Pollut Res

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Experimental Study on the Thermal Performance of Rice Straw-Mortar Composite Materials

Cited by 4 publications

References 25 publications

Improvement the brittle Resistance of High-Strength Concrete through Palm Leaf Sheath Fibers and Rice Straw Fibers

Improvement the brittle Resistance of High-Strength Concrete through Palm Leaf Sheath Fibers and Rice Straw Fibers

Optimization Research of Sodium Hydroxide Pretreatment to Enhance the Thermal Properties of Straw–Mortar Composite Materials

A review on recent eco-friendly strategies to utilize rice straw in construction industry: pathways from bane to boon

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