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Mechanical, durability and hygrothermal properties of concrete produced using Portland cement-ceramic powder blends

Author(s):





Medium: journal article
Language(s): English
Published in: Structural Concrete, , n. 1, v. 17
Page(s): 105-115
DOI: 10.1002/suco.201500029
Abstract:

Blended Portland cement-ceramic powder binder containing up to 60 % fine-ground waste ceramics from a brick factory is used in concrete mix design as an environmentally friendly alternative to the commonly used Portland cement. The experimental analysis of basic physical characteristics, mechanical and fracture-mechanical properties, durability properties and hygrothermal characteristics shows that the optimal amount of ceramic powder in the mix is 20 % of the mass of blended cement. The decisive parameters in that respect are compressive strength, liquid water transport parameters and resistance to de-icing salts, which are not satisfactory for higher ceramics dosage in the blends. In the case of other parameters studied, the limits for the effective use of ceramic powder are higher: 40 % for effective fracture toughness and specific fracture energy, 60 % for frost resistance and chemical resistance to MgCl2, NH4Cl, Na2SO4, HCl and CO₂. The water vapour diffusion coefficient is found to increase with increasing ceramics content, which for wet envelopes can be considered as a positive feature, but may have a negative effect for dry envelopes. The thermal conductivity of all mixes increases fast with growing moisture content; differences of up to 50 % between the dry and water-saturated state values are observed. This has to be taken into account in energy-related calculations.

Keywords:
concrete compressive strength ceramic powder frost resistance chemical resistance hygrothermal characteristics
Available from: Refer to publisher
Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1002/suco.201500029.
  • About this
    data sheet
  • Reference-ID
    10072982
  • Published on:
    24/04/2016
  • Last updated on:
    05/10/2016
 
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