Department of Civil & Environmental Engineering

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Browsing Department of Civil & Environmental Engineering by Subject "Aerated concrete."

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  • Item
    Open Access
    Flexural Performance of Bamboo-Reinforced Foamed Aerated Concrete Beams.
    (2014 Scientific & Academic Publishing., 2014) Ikponmwosa, E.; Falade, F.; Fapohunda, C.; Aransiola', J.
    This study reports the results of investigation conducted to evaluate the performance of foamed aerated concrete beams with bamboo as the tensile reinforcement. The flexural parameters assessed were, load-deflection behaviour, failure mode, and flexural moments. Its density and compressive strength were also investigated. Foamed aerated concrete made from cement-sand ratio of 1:3 with foaming agent to water ratio of 1:33 was prepared. Twelve 150x150x150mm cube specimens were tested for compressive strength at different curing ages of 7, 21, 28 and 45days. Three sets of 12 beams of 225 x 225 x 2350 mm containing bamboo as reinforcement were tested for flexural strength. The first, second and third set respectively had 2, 4, and 6 numbers of 10 mm x 10 mm bamboo as reinforcement. For the cube specimens tested, the compressive strength increased with curing age. The flexural moments of beams increased with increase in the percentage of bamboo strip reinforcement and curing age. All the beams exhibit flexural failure. The deflection decreased with increase in the area of bamboo splints as tensile reinforcement, but failure load decreased with increase in area of bamboo in the tension zone. It can be concluded that inclusion of bamboo splints as reinforcement in tension zone improved the flexural performance of foamed aerated concrete.
  • Item
    Open Access
    Low-Cost Construction Through The Use Of Pulverized Bone Foamed Aerated Concrete (PB-FAC).
    (2010) Falade, F.; Ikponmwosa, E.; Fapohunda, C.
    Provision of affordable housing especially, for low-income earners, which forms the majority or the population. continues to be elusive in the nations of world. The major reason given for this is the high cost of building and construction materials. Concrete and concrete products constitute the major building construction materials. However. cement which is till: main binder in concrete production has been identified as the major contributor to increasing high cost of construction. This paper presents the results of investigation conducted to assess the structural suitabiIity and adequacy, as well as affordabiIity of using pulverized bone as partial replacement of cement in the production of foamed aerated concrete (PB-FAC) for low-cost buiIding and construction purposes using Nigeria as a case study. 'The parameters investigated in accordance with relevant standards, are: workability. density, compressive strength, tensile strength. and water absorption capacity. Cost comparison with equivalent concrete of equal strength was also carried out. The results showed adequate strength and water absorption capacity, as well as cost reduction of lip to 36°'-i, at 20°"0 cement replacement with pulverized bone, It is concluded that the use of pulverized bone foamed aerated concrete (PB-FAC) can be used as a strong and affordable building and construction material.