Abstract
This technical note examines the splitting tensile strength properties of natural sand treated with polyvinyl acetate (PVA) fiber in combination with biocementation using the microbially induced calcite precipitation (MICP) process. Ottawa 20-30 sand was mixed with PVA fiber at five different fiber ratios (0.0%, 0.2%, 0.4%, 0.6%, and 0.8% by weight) and then stabilized using urease-producing bacteria plus urea and calcium chloride (CaCl2) solutions. Splitting tensile strength was determined for the treated sand samples. The results showed that the splitting tensile strength and splitting secant elastic modulus increased with increasing in either calcium carbonate content or fiber ratio. The use of PVA fibers together with MICP treatment could also increase the failure strain and the postfailure splitting tensile strength.
| Original language | English |
|---|---|
| Article number | 06019007 |
| Journal | Journal of Materials in Civil Engineering |
| Volume | 31 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sept 1 2019 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2019 American Society of Civil Engineers.
ASJC Scopus Subject Areas
- Civil and Structural Engineering
- Building and Construction
- General Materials Science
- Mechanics of Materials
Keywords
- Calcium carbonate content
- Microbially induced calcite precipitation (MICP)
- Polyvinyl acetate (PVA) fiber
- Reinforced cemented sand
- Splitting tensile strength