https://pavanakula.org/home daily 1.0 2024-12-11 https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/b2cef2ef-9f1a-43bf-a65b-54f7ea58eed1/3232026_Oregon+State+Foundation_Pavin+Akula_0541.jpg https://pavanakula.org/research daily 0.75 2023-05-11 https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/1604032935435-BQSX3PH3UOOOV2RFWE3Z/Outline Research - Funded Research Our research is supported by federal, industry, and philanthropic sponsors. With USACE ERDC, we use geomechanics and geochemical kinetic modeling to simulate soil-cement interactions for 3D printing and soil-stabilization applications. Industry supports our work on the effect of lime in mortars and sulfate-bearing mine tailings. USDOT University Transportation Center funds research on coastal soils exposed to seawater. USDA ARS, through the TallWood Design Institute, funds 3D-printed geomaterial composites for mass timber. https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/47f54dd7-21b3-4a8a-8d7a-5e8d48b95d34/Picture3.png Research Overview: Rapid stabilization of expansive soils has significant potential to support infrastructure development, particularly highway pavements. Historically, several studies have attempted to develop a stabilizer that can rapidly convert weak soils to strong soils with little manipulation and straightforward construction protocol. Often, such studies have recommended the use of non-traditional stabilizers that have not been widely implemented. This study aimed to develop and evaluate the use of a mixture composed of conventional stabilizers such as lime, metakaolin, and sodium silicate for rapid strength gain of expansive soils. Funding agency: Cascadia Lifelines Program, US-Army Engineering and Research Division https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/d9cfaed6-2a4a-4018-a19b-94aa9100d02d/Screen+Shot+2023-05-10+at+3.49.28+PM.png Research Overview: Civil engineers frequently use lime to improve the mechanical properties of weak clayey soils. The production of lime is associated with significant CO2 emissions. Sequestering carbon dioxide into the stabilized soil can effectively reduce the carbon footprint of the lime. In the presence of CO2, unreacted lime in the stabilized soil can react with CO2, form stable carbonates (e.g., CaCO3), and trap the CO2. Carbonation occurs due to atmospheric CO2 is a slow and natural process. The use of gaseous CO2 for accelerating carbonation is a popular option. However, this method is not pragmatic for sequestering CO2 in the field. The primary objective of this study is to develop a pragmatic approach for sequestering CO2 into stabilized soil materials. For this purpose, this study investigates different sources of CO2 (gaseous, liquid, and solid sources of CO2) to accelerate the carbonation reaction. Funding agency: Startup funds https://video.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/fe9bb293-5ecc-4c9d-bcb5-b94a56c73895/playlist.m3u8 https://video.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/fe9bb293-5ecc-4c9d-bcb5-b94a56c73895/thumbnail Research Research https://pavanakula.org/research-1 daily 0.75 2024-12-11 https://pavanakula.org/people daily 0.75 2024-12-11 https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/0d0f7f64-df5a-477c-8580-114ef142bf76/ashish+webpage+.jpg People https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/8562aaaf-f105-456d-9d1d-0d27f953d322/IMG_2568.JPG People https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/b0b30c9c-e7b3-472e-adaf-0bd79326cd7c/Montaseer+Meraz.jpg People https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/69ebd1c0-d1a6-424d-b825-43e7d4a36dc4/Screenshot+2024-12-10+at+4.38.12%E2%80%AFPM.png People https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/ffb2b5e7-72be-4f5c-98fd-7f8e46219bbc/Vaibhav+.jpeg People https://images.squarespace-cdn.com/content/v1/5f4c5df6242133283516cf30/2af3d56d-f788-4167-bac4-7707cf614549/Maxwell+Williams_Headshot_2024.jpg People https://pavanakula.org/openings daily 0.75 2024-12-11