—Several problems involved with concrete excess
bleeding, such as durability and strength mitigation, unsightly
surface, delayed finishing or postponed mold translocation.
The purpose of study is to detectmajor cause for excess
bleeding in Gotvand affiliated projects.Thus, interaction
among different ingredientswas surveyed viaslurry mixes. That
way the most consistent components and subsequently
approperiate mixes were emerged . Besides that some
alternative treatments were proposed as well.Then sort of
physical model was devised to evaluate bleeding rate and
capacity for each alternative mixes.
Chemically inconsistent behaviorof components, poor fine
content, nonuniform cement manufacturing have beeen
recognized as major motives. Bringing stone powder back to
sand production cycle was concluded as an effective as well as
most economic treatment option.
Concrete placement into segment through mere one access
point at each elevation of formwork, thus unfavorable concrete
displacement using formwork vibrators was identified as the
most harmful executive cause as well.
—Alternative treatments, bleeding, components’
interaction, physical model.
Ali Zabihollah zadeh is with the Mahab Ghodss Consulting Engineering
Company at the Islamic Republic of Iran, Iran (e-mail:
Cite: A. Zabihollahzadeh and E. Ghorbani, "Concrete Lining Pathology for Bleeding: Penstock and
Surge Tank of Upper Gotvand Dam," International Journal of Engineering and Technology vol. 7, no. 4, pp. 310-316, 2015.