Department of Civil Engineering

Permanent URI for this collectionhttp://localhost:4000/handle/123456789/1927

Browse

Author: search.filters.author.Bhunia, DipenduSubject: search.filters.subject.Depth of carbonation

Search Results

Now showing 1 - 5 of 5
  • No Thumbnail Available
    Item
    An Experimental Investigation of Accelerated Carbonation on Properties of Concrete
    (ENGINEERING JOURNAL, 2016) Bhunia, Dipendu; Singh, Shamsher Bahadur
    This study deals with the effect of carbonation on the mechanical properties such as compressive strength, flexural strength and durability like depth of carbonation and volume of permeable voids of the concrete cast using ordinary Portland cement over a time period of up to 120 days. To study the behavior of carbonation front of concrete in presence of varying water content, water binder ratios of 0.35, 0.50 and 0.65 are chosen. It is observed that the volume of permeable voids of concrete has decreased, with an increase in compressive strength, flexural strength and depth of carbonation as the number of days of exposure of concrete specimen to high carbon dioxide increased.
  • No Thumbnail Available
    Item
    Assessment of carbonation depth under natural and accelerated carbonation conditions
    (Indian Concrete Journal, 2016) Bhunia, Dipendu
    This paper deals with the effect of accelerated carbonation on mechanical properties and durability of unreinforced concrete. Concrete with water binder ratios of 0.35, 0.50 and 0.65 were cast and kept in accelerated carbonation chamber under controlled conditions for a period of 1 year. Specimens were removed at predefined time intervals and tested for compressive strength, flexural strength, modulus of elasticity, volume of permeable pores and depth of carbonation. The depth of carbonation obtained from the accelerated carbonation conditions are used to predict the carbonation depths under natural concentration of carbon dioxide using Fick’s law and the values are compared to those obtained from a structure 60 years old
  • No Thumbnail Available
    Item
    Comparative study of accelerated carbonation of plain cement and fly-ash concrete
    (Elsevier, 2017-03) Singh, Shamsher Bahadur; Bhunia, Dipendu
    Accelerated carbonation of plain cement concrete and concrete with fly-ash replacing cement partially, is discussed in the present paper. Mechanical properties such as compressive strength, flexural strength, modulus of elasticity, durability aspects such as depth of carbonation and porosity of carbonated concrete are studied. To study the influence of water binder ratio on the above-mentioned properties, water-binder ratios of 0.35, 0.50 and 0.65 are used. It is observed that the mechanical properties of carbonated concrete have increased with the duration of carbon dioxide exposure. So did the depth of carbonation, whereas the volume of permeable voids has reduced leading to the decrease in porosity. An expression to predict the depth of carbonation of fly-ash concrete has also been developed.
  • No Thumbnail Available
    Item
    An Experimental Investigation of Accelerated Carbonation on Properties of Concrete
    (Eng. Journal, 2016) Singh, Shamsher Bahadur; Bhunia, Dipendu
    This study deals with the effect of carbonation on the mechanical properties such as compressive strength, flexural strength and durability like depth of carbonation and volume of permeable voids of the concrete cast using ordinary Portland cement over a time period of up to 120 days. To study the behavior of carbonation front of concrete in presence of varying water content, water binder ratios of 0.35, 0.50 and 0.65 are chosen. It is observed that the volume of permeable voids of concrete has decreased, with an increase in compressive strength, flexural strength and depth of carbonation as the number of days of exposure of concrete specimen to high carbon dioxide increased.
  • No Thumbnail Available
    Item
    Comparative study of accelerated carbonation of plain cement and fly-ash concrete
    (Elsiever, 2017-03) Singh, Shamsher Bahadur; Bhunia, Dipendu
    Accelerated carbonation of plain cement concrete and concrete with fly-ash replacing cement partially, is discussed in the present paper. Mechanical properties such as compressive strength, flexural strength, modulus of elasticity, durability aspects such as depth of carbonation and porosity of carbonated concrete are studied. To study the influence of water binder ratio on the above-mentioned properties, water-binder ratios of 0.35, 0.50 and 0.65 are used. It is observed that the mechanical properties of carbonated concrete have increased with the duration of carbon dioxide exposure. So did the depth of carbonation, whereas the volume of permeable voids has reduced leading to the decrease in porosity. An expression to predict the depth of carbonation of fly-ash concrete has also been developed.