The durability of cement concrete is well defined as its ability
to resist weathering action, chemical attack, or any other process of
deterioration. Durable concrete will hold its original form quality, and
serviceability when exposed to the environment. The primary component of
concrete is Portland cement. Large-scale cement production facilities use a lot
of energy and generate a lot of unwanted products (CO2), which harm the
environment and deplete natural resources. This threat to ecology has led researchers
to use industrial by-products as a supplementary cementitious material in
making concrete. In view of this silica fume (SF), ground granulated blast
furnace slag (GGBS), rice husk ash, fly ash (FL), metakolin, alccofine (AL),
micro-fine material, etc.; are tried out for replacing cement partially or
fully in concrete, without compromising on its strength, also reduce greenhouse
gases and sustainable way of management of waste. Alccofine is a specially
processed product based on slag of glass content with high reactivity obtained
through the process of granulation. A new ultra-fine material that emerged in
the market is called Alccofine. This is available as a cementitious material
for replacing cement. Since this is a new material, a study is tried out with
the combination of Alccofine and GGBS. Ordinary Portland Cement 53 grade was
used throughout the study and the grade of concrete is M20. Totally 108 cubes
and 27 cylinders were cast and tested in the laboratory with nine different
percentage combinations of Alccofine (A), GGBS (G) and cement (C) (C100,
C70A0G30, C90A10G0, C60A10G30, C30A10G30, C40A0G60, C85A15G0, C55A15G30,
C25A15G60). The average loss of weight and loss of compressive strength is
considerably low. As the attack proceeds, all the cement compounds are evenly
broken and leached away, together with carbonate aggregate material. In each
case, 3 nos. of specimens were used for repeatability. It is intended to study
the compressive strength, and its durability properties like acid attack test,
sulphate attack test and rapid chloride permeability test (RCPT). Among the
nine different combinations, the maximum compressive strength of concrete is
achieved by using AL10% and GGBS 30% is 38.08 N/mm2. C60A10G30 is 28.76% higher
than the control mix. The result shows that concrete incorporating alccofine
and GGBS have higher compressive strength and alccofine enhanced the durability
of concrete also. It is recommended to utilize the AL material with cement
after checking its other durability properties and flexural studies on beams.
Author(s) Details
Balamuralikrishnan
R
Department of Civil and Environmental Engineering, College of
Engineering, National University of Science and Technology, Muscat, P.O Box:
2322, CPO Seeb 111, Sultanate of Oman.
Saravanan
J
Department of Civil and Structural Engineering, Annamalai
University, Pin: 608001, Tamil Nadu, India.
Please
see the book here:- https://doi.org/10.9734/bpi/caert/v6/1218
