An assessment method of hydration degree of Rice husk ash blended cement considering temperature effect

Luo, Xue; Jiang, Xunli; Chen, Qi; Huang, Zhiyi

doi:10.1016/j.conbuildmat.2021.124534

Cited by 13 publications

(1 citation statement)

References 47 publications

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“…It was obtained in their results that with 5% RHA + 5% fly ash optimum strengths were achieved; however, as the RHA and FA content increased the concrete performance decreased. Luo et al (2021) in their research rice husk ash (RHA) has been considered as a suitable mineral admixture for cement. The effect of temperature is not well considered.…”

Section: Tensile Strengthmentioning

confidence: 99%

Use of recycled concrete and rice husk ash for concrete: A review

Muñoz Pérez,

Sánchez Díaz,

Barboza-Cullqui

et al. 2024

JART

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The rapid development of populations and the demand in the consumption of concrete is generating the need to produce larger quantities of cement, which brings with it negative effects for the environment. Approximately 0.87 kg of CO2 is produced by the manufacture of cement; In addition, the use of aggregates is generating great concern in the construction industry, due to the costs and the restriction of these. Similarly, the accumulation of construction and demolition waste (RCA) and rice husk ash (RHA) contribute to pollution. Therefore, the objective of this manuscript is to review the literature on the use of RCA and RHA for the elaboration of concrete. For this, indexed articles were used, between the years 2017-2021. The results showed that when 8% RHA is added, the concrete reaches a compressive strength of 70 MPa; as well as, the flexural strength of concrete by adding 50% RCA + 1.50% basalt microfibers was increased by 29.44%. On the other hand, when RHA is added by 15% it reaches a compressive strength of 48.8 MPa; in turn, the mechanical performance at bending with 10% seashell by fine aggregate and 20% RHA by cement, reached a resistance of 65 MPa. Concluding, that the behavior of concrete undoubtedly depends on the proportions of either RCA or RHA; however, the percentages must be no more than 8% and 15% respectively.

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Section: Tensile Strengthmentioning

confidence: 99%

Use of recycled concrete and rice husk ash for concrete: A review

Muñoz Pérez,

Sánchez Díaz,

Barboza-Cullqui

et al. 2024

JART

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Effect of four-component binder on characteristics of self-compacting and fibre-reinforced self-compacting mortars

Venkateswara Rao,

Palou,

Novotný

et al. 2024

J Therm Anal Calorim

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The hydration heat of a four-component binder consisting of Portland cement (CEM I 42.5 R), blast-furnace slag (BFS), metakaolin (MK), and silica fume (SF) was investigated using a conduction calorimeter and thermal analytical method to optimize the material composition of self-compacting mortar (SCM). Then, the influence of material composition with different substitution levels (0, 25, 30, and 35% labelled as SCM100, SCM75, SCM70, and SCM65) on physical and mechanical properties of the mortars with two volumetric binder sand ratios of 1:1 and 1:2 (cement: sand) was evaluated. Furthermore, two mortar compositions comprising SCM75 and sand at 1:1 and 1:2 ratios were used to prepare fibre-reinforced self-compacting mortars in five combinations (0, 0.25, 0.5, 0.75, and 1%) of two fibres (polypropylene-PPF and basalt-BF) at a constant content of 1.00 vol%. The properties of the prepared samples were investigated with respect to the characteristics of self-compactibility and mechanical properties of fresh and hardened states, respectively. The rheology characteristics expressed by slump flow, V-funnel, and T20 were found following the EFNARC guidance. The partial replacement of cement by supplementary cementitious materials has enhanced the performances (compressive and flexural strengths, dynamic modulus of elasticity) of self-compacting mortars from the 7th day through pozzolanic activity. Furthermore, adding fibres has enhanced the DME and microstructure of the self-compacting mortars.

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Municipal solid waste biorefinery

Dahunsi

2025

Biorefinery

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An assessment method of hydration degree of Rice husk ash blended cement considering temperature effect

Cited by 13 publications

References 47 publications

Use of recycled concrete and rice husk ash for concrete: A review

Use of recycled concrete and rice husk ash for concrete: A review

Effect of four-component binder on characteristics of self-compacting and fibre-reinforced self-compacting mortars

Municipal solid waste biorefinery

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