Pyo Minkyeong, Kim Jongsun, Seok Seungwook, Park Chan Ho, Choi Wonchang
Department of Chemical, Biological and Battery Engineering, Gachon University, Seongnam 13120, Republic of Korea.
Department of Architectural Engineering, Gachon University, Seongnam 13120, Republic of Korea.
Molecules. 2025 Apr 24;30(9):1898. doi: 10.3390/molecules30091898.
Immediate action is required to achieve carbon neutrality within the cement industry. The integration of biochar into cement as a component of reinforced concrete has potential to mitigate carbon emissions in the construction sector by enabling carbon sequestration. In pursuit of eco-friendly practices and improved physical properties of cement composites, this study investigated the properties of wood-based, micron-sized biochar as a non-carbonate raw material, including its chemical composition, morphology, and wettability. The characterization of lignocellulosic micro-biochar and its mechanical impact on cement composites was a focus of this study. Cement was partially replaced with varying weight percentages of micro-biochar (1, 3, and 5 wt%), and the effects were evaluated through compressive strength tests after 7 and 28 d. The results demonstrated that the micro-biochar could sustain strength even when substituted for cement. Notably, after 28 d, the compressive strength of the sample with only cement was 29.6 MPa, while the sample with 3 wt% biochar substitution showed 30.9 MPa, indicating a 4.4% increase. This research contributes to sustainable construction practices by offering a green solution for reducing carbon emissions in the industry.
水泥行业需要立即采取行动实现碳中和。将生物炭作为钢筋混凝土的一个组成部分融入水泥中，有潜力通过实现碳固存来减少建筑行业的碳排放。为了追求环保做法并改善水泥复合材料的物理性能，本研究调查了微米级木质生物炭作为非碳酸盐原料的性能，包括其化学成分、形态和润湿性。木质纤维素微生物炭的表征及其对水泥复合材料的力学影响是本研究的重点。用不同重量百分比（1%、3%和5%）的微生物炭部分替代水泥，并在7天和28天后通过抗压强度试验评估效果。结果表明，即使微生物炭替代了水泥，其仍能保持强度。值得注意的是，28天后，仅含水泥的样品抗压强度为29.6MPa，而用3%生物炭替代的样品抗压强度为30.9MPa，提高了4.4%。本研究通过提供一种减少该行业碳排放的绿色解决方案，为可持续建筑实践做出了贡献。
