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Preliminary Study of Agricultural Waste as Biochar Incorporated into Cementitious Materials

Journal of Architectural Environment & Structural Engineering Research 2023年第2期6卷 59-79页

作者： Achal Pandey Srinivasarao Naik B shishir sinha B.Prasad Chemical Engineering Department Indian Institute of Technology RoorkeeRoorkeeUttarakhand247667India Central Institute of Petrochemicals Engineering&Technology ChennaiTamil Nadu600032India CSIR-Central Building Research Institute RoorkeeUttarakhand247667India

Incorporating small amounts of biochar into cementitious materials has partial effects on the *** this present study,rice husk was collected as agricultural biomass from a local area of Roorkee Uttarakhand,which contains siliceous material to a significant *** was prepared from agricultural waste in a muffle furnace at a temperature of 500℃for 90 min and ground to a fineness of less than 10μ*** to incorporation into building envelopes such as mortar and concrete,a basic study on cement pastes is essentially *** this purpose,different dosages of biochar such as 0,3%,5%and 10%*** replaced with cement in cementitious *** properties such as water absorption,density and porosity were ***,mechanical and thermal properties such as compressive strength and thermal conductivity were *** tools like field emission scanning electron microscopy(FESEM),X-ray diffraction(XRD)and thermogravimetric analyzer(TGA)were used to identify the hydration *** the dosages increased in the cement matrix,the physical properties of sample were increased and porosity *** compressive strength of biochar incorporated cement paste improved according to 0,3%,5%and 10%*** further reveals that as the dosage increased,the thermal conductivity of the samples decreased ***,the sustainable assessment showed that biochar could reduce embodied carbon,embodied energy and strength efficiency substantially over the control sample.A satisfactory result was obtained at 5%*** 10%*** *** overall result revealed that biochar up to 10%*** be incorporated into mortar and concrete due to better results than the control mix.

关键词： Rice husk Silicious material Biochar Cement Hydration

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