Fibers, Geopolymers, Nano and Alkali-Activated Materials for Deep Soil Mix Binders
| Autor: | Soon Yee Wong, Sien Ti Kok, John Kok Hee Wong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Cement
Environmental Engineering Materials science Metallurgy 0211 other engineering and technologies 02 engineering and technology Building and Construction Pozzolan engineering.material Geotechnical Engineering and Engineering Geology law.invention Geopolymer Portland cement Improved performance law 021105 building & construction Nano Alkali activated engineering 021101 geological & geomatics engineering Civil and Structural Engineering Lime |
| Zdroj: | Civil Engineering Journal. 6:830-847 |
| ISSN: | 2476-3055 2676-6957 |
| DOI: | 10.28991/cej-2020-03091511 |
| Popis: | Ordinary Portland Cement (OPC) and Lime (CaO) have traditionally been used as binder materials for Deep Soil Mix (DSM) ground improvement. Research has been conducted into possible alternatives such as pozzolans to reduce reliance on either cement or lime. However, pozzolans still undergo similar calcium-based reactions in the strengthening process. In this review, further alternative binder materials for soil strength development are explored. These recent developments include fiber reinforcement materials, alkali activation methods, nanomaterials and geopolymers, which can potentially achieve equal or improved performance. Research to date has shown that alkali-activated materials and geopolymers can be equivalent or superior alternatives to pozzolanic supplemented cement binders. The case is made for GP cements which potentially produces 80% less CO2 than conventional portland cement during manufacture. One-part AAM and GP cements are a promising substitute for portland cement in DSM. A combined approach which incorporates both Ca and alkali activated/geopolymer types of materials and hence reactions is proposed. |
| Databáze: | OpenAIRE |
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