Open AccessOptimization of Dry Construction Mix with the Addition of Biochar from Reclaimed Rice Straw in the Agro-Industrial Complex
Author(s) -
Alla S. Smolyanichenko,
Y Shcherban,
Sergey A. Stel’makh,
Alexander Khalyushev,
Yu. V. Zherebtsov
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/937/3/032071
Subject(s) - biochar , mortar , ultimate tensile strength , compressive strength , straw , rice straw , environmental science , pulp and paper industry , materials science , waste management , agronomy , composite material , engineering , pyrolysis , biology
Currently, the actual problem is the disposal of various by-products of the agro-industrial complex. This direction practically does not develop, but is solved only by burning them, which leads to air pollution. The article contains physical and chemical studies of a byproduct from rice production, namely rice straw. In the process of recycling rice straw at a temperature of 600°C, biochar is formed, which can be used as a micro-filling additive for dry mortar. Using the method of mathematical planning of the experiment (FFE 2k), optimization was carried out and the optimal composition of the dry mortar was obtained, containing up to 10% of biochar. It has been established that the introduction of biochar in the optimal dosage improves the physical and mechanical properties of the dry mortar in comparison with the control composition on average by: average density – 3%, water absorption – 17%, compressive strength – 12%, tensile strength at bending – 24%, adhesion strength – 55%..