Abstract
Porosity and strength responses that result from the substitution of fine sand aggregate with similarly sized granular activated carbon (GAC) particles, were studied in cements commonly used in North America. In addition to changes in density and mechanical properties, pore structure responses were analyzed using mercury intrusion porosimetry (MIP). Increases in both compressive and tensile strength resulted from GAC incorporation, where sand replacement was 2% by mass or lower; porosity and critical pore entry diameter also decreased near this range (<1%). Results suggest that bituminous GAC incorporation into cementitious materials may have beneficial effects within specific sizes and mass substitution ranges.
| Original language | English |
|---|---|
| Pages (from-to) | 750-759 |
| Number of pages | 10 |
| Journal | Construction and Building Materials |
| Volume | 164 |
| Early online date | 8 Jan 2018 |
| DOIs | |
| Publication status | Published - 10 Mar 2018 |
Funding
The authors gratefully acknowledge the Bureau of Reclamation (USBR-Denver), Louisiana Tech University, CIDI-UAG (Research Center for the Industrial Development) belonging to the Autonomous University of Guadalajara (UAG) (Mexico), LafargeHolcim (Mexico) and ALSA Ingenieria (Mexico) for their support during the experiments of this study. This research was supported by the Mexican Council of Science and Technology (CONACYT) (Grant No. 103259 ) and the Colorado Office of Economic Development (Grant No. POGG-2016-0946 ). This work represents the views of the authors and not necessarily those of the sponsors.
Keywords
- Activated carbon
- Cement mortar
- Compressive strength
- Lightweight aggregate
- Mercury intrusion porosimetry
- Sustainable development
- Tensile strength
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- General Materials Science