Int. J. Advanced Structures & Geotechnical Engineering
ISSN 2319-5347, ISI Impact Factor: 0.763
VOLUME 04 NO. 02 APRIL 2015:
Title: Pre-saturated
Sawdust as a source of Internal curing in high
performance concrete
Authors: Iftikhar Azim, Bazid Khan,
Shams-Ul-Islam, Sikandar Hayat Sajid
Abstract: This research paper presents a
parametric experimental study which investigates the use
of presaturate sawdust for producing high performance
concrete (low w/c ratio concrete mixtures).
Pre-saturated sawdust is used as a source of internal
curing by partially replacing sand. Pre-saturated
sawdust is used to replace fine aggregate at three
replacement levels of 5, 10 and 15% by mass
respectively. The samples are subjected to different
curing conditions. Compressive strength tests are
conducted and comparison with control mix and unit
weight analysis is also carried out. The compressive
strengths of the samples without external curing for 5%
replacement level are improved by 81.92%, 51.16%, 4.01%
and 7.64% at 3,7,14 and 28 days respectively.While the
compressive strengths of specimens with external curing
for 5% replacement level are improved by 8.55%, 27.57%,
50.35 and 6.26% at 3,7,14 and 28 days respectively. The
unit weight is decreased by 5.52%,10.71% and 17.49% for
5, 10 and 15% replacement levels of sawdust,
respectively. The controlling factors for sawdust
compressive strength are discussed and experimental
results are reported.
Keywords: Internal Curing, High
Performance Concrete, Sawdust, Compressive Strength
Pages: 109-113