Properties of nano-silica-modified self-compacting engineered cementitious composites
| Autor: | Muhd Fadhil Nuruddin, Melvin Yaw, Mohd. Z. Zulkefli, Bashar S. Mohammed, Bitrus Emmanuel Achara |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Strategy and Management Engineered cementitious composite Composite number 0211 other engineering and technologies 020101 civil engineering Young's modulus 02 engineering and technology engineering.material Polyvinyl alcohol Industrial and Manufacturing Engineering 0201 civil engineering chemistry.chemical_compound symbols.namesake 021105 building & construction Response surface methodology Fiber Composite material General Environmental Science Shrinkage Renewable Energy Sustainability and the Environment Building and Construction Compressive strength chemistry engineering symbols |
| Zdroj: | Journal of Cleaner Production. 162:1225-1238 |
| ISSN: | 0959-6526 |
| Popis: | An engineered cementitious composite (ECC) is a type of high-performance fibre-reinforced composite developed based on micromechanical principles. To improve the modulus of elasticity and minimise the drying shrinkage in self-compacting (SC) ECC without adversely affecting its ductility, nano-silica (NS) is included in the cementitious composite. Twenty SC-ECC mixtures were proportioned, cast, cured, and tested to determine the fresh and hardened properties by using two variables: polyvinyl alcohol (PVA) fiber and NS particles. Five levels of NS (0%, 1%, 2%, 3%, and 4%) and four levels of PVA (0.5%, 1%, 1.5%, and 2%) were considered. A response surface methodology was used to conduct multi-objective optimisation and develop mix proportions that produce the best response to the compressive strength, modulus of elasticity, and energy absorption. It was found that mixtures with 2% PVA and 1.89% NS produce the most desirable responses. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect