Technology and method for applying biochar in building materials to evidently improve the carbon capture ability

摘要

In this work, the aim is to determine an effective pore structure combination of building materials and biochar for evidently improving the carbon capture ability of the building materials. Pore structure connectivity changing model model is applied to design the pore structure for target material, and the layered structure is applied to improve its mechanical properties. The results show that the pore structure connectivity changing model is applicable, and when water to cement ratio of building materials increases from 0.25 to 0.4, the improvement effect of biochar on carbon capture ability of target material increases from 10% to 148%. Moreover, the improvement ability of biochar increases as its dosage or size increases. Additionally, compared with even structure, the layered structure makes a respective 44% and 28% increase in compressive and three-point flexural strength of the target material with water to cement ratio of 0.25. (c) 2020 Elsevier Ltd. All rights reserved.