Collaborative Research: Nanoengineering of Resilient Lightweight Concrete Mesostructures for Thermally Efficient Building Envelopes

合作研究：用于热高效建筑围护结构的弹性轻质混凝土细观结构纳米工程

• 批准号: 1826122
• 负责人: Mohammad Javad Abdolhosseini Qomi
• 金额: $ 19.65万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-15 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1826122&HistoricalAwards=false
• 关键词: Collaborative; Research; Nanoengineering; Resilient; Lightweight

Cement-based materials are known for their load-bearing capacity and ability to be shaped into large complex forms, while ensuring cost-effectiveness. However, concrete is a poor thermal insulator. According to the U.S. Energy Information Administration, energy loss through inefficient building envelopes inflicts excessive financial burden on homeowners. In this research, heat transport will be studied in a novel lightweight concrete that possesses superior intrinsic thermal resistance. If successful, the results will benefit our society with a new multifunctional building material that can lower heating and cooling energy consumption, while maintaining structural performance, with a collateral benefit that it is lightweight. The acquired knowledge can be utilized by industry and academia in development of highly needed energy efficient and resilient building envelopes. Furthermore, this new material can bolster our national energy security, as well as offering positive socioeconomic and environmental impacts. Graduate and undergraduate students will be offered unique multidisciplinary learning experiences across fields of heat transport, atomistic simulation, materials synthesis and characterization. The objective of this research is to nanoengineer high efficiency scattering mechanisms into the molecular structure of calcium-silicate-hydrate (C-S-H) using short-chain organosilanes molecules to achieve a novel lightweight concrete with high thermal resistance and load bearing capacity. This research combines materials synthesis and characterization methods with atomistic simulations to study fundamentals of heat transport and cohesion in C-S-H crosslinked with size-specific organometallic molecules. Molecular simulations will be performed at University of California, Irvine, to scientifically-inform the experimental synthesis efforts carried out by researchers at the University of Houston. Multi-scale methods of materials characterization will be applied to assess thermo-mechanical properties of novel lightweight cement composites incorporating C-S-H organo nano-laminates and micro-cenospheres.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

水泥基材料以其承载能力和成型为大型复杂形状的能力而闻名，同时确保成本效益。然而，混凝土是一种较差的隔热体。据美国能源信息署称，低效建筑围护结构造成的能源损失给房主带来了过重的经济负担。在这项研究中，将研究一种具有优异固有热阻的新型轻质混凝土的热传输。如果成功，其成果将造福我们的社会，提供一种新型多功能建筑材料，该材料可以降低供暖和制冷能耗，同时保持结构性能，并具有轻质的附带好处。工业界和学术界可以利用所获得的知识来开发急需的节能和弹性建筑围护结构。此外，这种新材料可以增强我们的国家能源安全，并带来积极的社会经济和环境影响。 研究生和本科生将获得跨热传输、原子模拟、材料合成和表征领域的独特的多学科学习体验。本研究的目的是利用短链有机硅烷分子将高效散射机制纳米工程化到水合硅酸钙（C-S-H）的分子结构中，以实现具有高耐热性和承载能力的新型轻质混凝土。这项研究将材料合成和表征方法与原子模拟相结合，研究与特定尺寸有机金属分子交联的 C-S-H 中的热传输和内聚力的基本原理。分子模拟将在加州大学欧文分校进行，为休斯顿大学研究人员进行的实验合成工作提供科学依据。材料表征的多尺度方法将用于评估包含 C-S-H 有机纳米层压板和微空珠的新型轻质水泥复合材料的热机械性能。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Spectral attributes of sub-amorphous thermal conductivity in cross-linked organic–inorganic hybrids

交联有机无机杂化物中亚非晶热导率的光谱属性

• DOI: 10.1039/d0nr02657c
• 发表时间: 2020
• 期刊: Nanoscale
• 影响因子: 6.7
• 作者: Morshedifard, Ali;Moshiri, Amir;Krakowiak, Konrad J.;Abdolhosseini Qomi, Mohammad Javad
• 通讯作者: Abdolhosseini Qomi, Mohammad Javad

Silicate Bond Characteristics in Calcium–Silicate–Hydrates Determined by High Pressure Raman Spectroscopy

• DOI: 10.1021/acs.jpcc.0c04563
• 发表时间: 2020-07
• 期刊: The Journal of Physical Chemistry C
• 作者: David W. Gardner;Jiaqi Li;A. Morshedifard;S. Masoumi;M. J. Abdolhosseini Qomi;P. Monteiro;R. Maboudian;C. Carraro

Buckling of thermalized elastic sheets

热化弹性片材的屈曲

• DOI: 10.1016/j.jmps.2021.104296
• 发表时间: 2021
• 期刊: Journal of the Mechanics and Physics of Solids
• 影响因子: 5.3
• 作者: Morshedifard, Ali;Ruiz-García, Miguel;Abdolhosseini Qomi, Mohammad Javad;Košmrlj, Andrej
• 通讯作者: Košmrlj, Andrej

Effective Interactions between Calcium-Silicate-Hydrate Nanolayers

• DOI: 10.1021/acs.jpcc.8b08146
• 发表时间: 2019-02-28
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY C
• 影响因子: 3.7
• 作者: Masoumi, Saeed;Zare, Siavash;Qomi, Mohammad Javad Abdolhosseini
• 通讯作者: Qomi, Mohammad Javad Abdolhosseini

Advances in characterizing and understanding the microstructure of cementitious materials

• DOI: 10.1016/j.cemconres.2019.105806
• 发表时间: 2019-10-01
• 期刊: CEMENT AND CONCRETE RESEARCH
• 影响因子: 11.4
• 作者: Monteiro, Paulo J. M.;Geng, Guoqing;Qomi, Mohammad Javad Abdolhosseini
• 通讯作者: Qomi, Mohammad Javad Abdolhosseini