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Durability of recycled aggregate concrete designed with equivalent mortar volume method
AbstractResults of a comprehensive investigation about the durability of structural-grade concrete made with recycled concrete aggregate (RCA) are presented. The RCA-concrete mixes were proportioned using a new concrete mix design method, termed the equivalent mortar volume (EMV) method. The EMV method is based on the hypothesis that RCA is a composite material comprising mortar and natural aggregate; therefore, when proportioning a concrete mixture containing RCA, one must account for the relative amount and properties of each the two components and adjust both the fresh coarse aggregate and fresh paste content of the mix accordingly. Tests were conducted to study the freeze–thaw, chloride penetration and carbonation resistances of the mixes proportioned by the EMV method and by the conventional method. Results of the test showed that RCA-concrete mixes proportioned by the EMV method have higher resistance to freeze–thaw action, chloride penetration and carbonation than those designed with the conventional method, and they satisfy the current requirements for concrete exposed to severe environments.
Durability of recycled aggregate concrete designed with equivalent mortar volume method
AbstractResults of a comprehensive investigation about the durability of structural-grade concrete made with recycled concrete aggregate (RCA) are presented. The RCA-concrete mixes were proportioned using a new concrete mix design method, termed the equivalent mortar volume (EMV) method. The EMV method is based on the hypothesis that RCA is a composite material comprising mortar and natural aggregate; therefore, when proportioning a concrete mixture containing RCA, one must account for the relative amount and properties of each the two components and adjust both the fresh coarse aggregate and fresh paste content of the mix accordingly. Tests were conducted to study the freeze–thaw, chloride penetration and carbonation resistances of the mixes proportioned by the EMV method and by the conventional method. Results of the test showed that RCA-concrete mixes proportioned by the EMV method have higher resistance to freeze–thaw action, chloride penetration and carbonation than those designed with the conventional method, and they satisfy the current requirements for concrete exposed to severe environments.
Durability of recycled aggregate concrete designed with equivalent mortar volume method
Abbas, Abdelgadir (author) / Fathifazl, Gholamreza (author) / Isgor, O. Burkan (author) / Razaqpur, A. Ghani (author) / Fournier, Benoit (author) / Foo, Simon (author)
Cement and Concrete Composites ; 31 ; 555-563
2009-02-11
9 pages
Article (Journal)
Electronic Resource
English
Durability of recycled aggregate concrete designed with equivalent mortar volume method
| Online Contents | 2009
Durability of recycled aggregate concrete designed with equivalent mortar volume method
| Online Contents | 2009
METHOD FOR PROPORTIONING RECYCLED AGGREGATE CONCRETE USING EQUIVALENT MORTAR
European Patent Office | 2016