Nanoscale Construction Biotechnology for Cementitious Materials: A Prospectus
نویسندگان
چکیده
Climate change, infrastructure resilience, and resource recovery from waste have emerged as grand challenges for civil engineers in the 21st century. Wicked problems associated with these global are necessitating innovative, multidisciplinary thinking multiscale, integrated solutions that spurring development of a new field—construction biotechnology. While field construction biotechnology spans multiple scales, this review highlights promise potential nanoscale (<100 nm) biotechnological applications to engineering. nanotechnology has revolutionized other industries, engineering remained limited due techno-economic environmental barriers. Biological production functional nanoparticles (NPs), however, offers economical routes develop resilient, high-performance cementitious materials while simultaneously addressing critical needs related wastewater air-pollution treatment. Recent research elucidated biological NPs exhibit preferred—and genetically controllable—morphological characteristics could tailor structure-property relationships materials. The natural ability well programmability via synthetic biology allow microorganisms immobilize heavy metals (e.g., Hg, Cr, Zn, Cd, Cu, Ag) interact greenhouse gases volatile organic compounds, therefore affording opportunity treat recover rare earth elements, remove air pollutions. In addition featuring state-of-the-art field, summarizes opportunities proposes roadmap
منابع مشابه
Nanoscale Modification of Cementitious Materials
This research investigates changes in the nanostructure and the nanoscale local mechanical properties of cement paste with microand nano-modifiers. Silica fume and multiwall carbon nanotubes (MWCNTs) were used as microand nano-modifiers. An effective method of dispersing CNTs in cement matrix was developed. A detailed study on the effects of CNTs concentration and aspect ratio on the fracture p...
متن کاملA reliable technique to determine the local mechanical properties at the nanoscale for cementitious materials
A Hysitron Triboindenter has been used to determine the mechanical properties of hardened cement paste and cement paste at the early age. This technique provides an in-situ scanning probe microscopy (SPM) imaging facility that allows pre and post-test observation of the sample. The same probe is used to indent and image eliminating the complicated situation of locating the same area with differ...
متن کاملEFFICIENCY FACTOR OF SUPPLEMENTARY CEMENTITIOUS MATERIALS: A STATE OF ART
The use of supplementary cementing materials is gradually increasing due to technical, economical, and environmental benefits. Supplementary cementitious materials (SCM) are most commonly used in producing ready mixed concrete (RMC). A quantitative understanding of the efficiency of SCMs as a mineral admixture in concrete is essential for its effective utilisation. The performance and effective...
متن کاملBOOK PROSPECTUS Power Integrity for Nanoscale Integrated Systems
Power Integrity (PI), as it relates to everyday life, is the stability and robustness of the electrical power supply to homes and businesses. For example, how stable is the 115V AC supply voltage level? How stable is its frequency (60 cycles a second) that determines time accuracy in simple electrical clock mechanisms? How steady is this supply when an air-conditioner system's large compressor ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Materials
سال: 2021
ISSN: ['2296-8016']
DOI: https://doi.org/10.3389/fmats.2020.594989