FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION:
“AN IMPROVED SUPPLEMENTARY CEMENTITIOUS PRODUCT AND A METHOD
OF PREPARATION THEREOF”
2. APPLICANT:
(a) NAME: SP CONCARE PRIVATE LIMITED
(b) NATIONALITY: Indian
(c) ADDRESS: C.S.NO. 4805, Varad Plaza,
Chintamani Nagar, Madhavnagar Road,
Sangli-416416, Maharashtra,
India
3. PREAMBLE TO THE DESCRIPTION
COMPLETE
The following specification particularly describes the invention and the manner in which it is
to be performed.
2
Field of the invention
[0001] The present invention generally relates to
supplementary cementitious products (SCP), and more
particularly to an improved composition of a supplementary
5 cementitious product and a method of preparation of the
improved composition.
Background of the invention
[0002] Nowadays, disposal and management of industrial
waste and by-products have become a critical problem due to
10 grave implications on the environment. With increase in
generation of industrial waste and by-products, finding and
adopting an efficient means for disposal and management of
such wastes and by-products are faced with a lot of
challenges. Also, by-products produced by industries are
15 hazardous in solid, liquid, or gaseous forms, which severely
and often irrevocably affect the surrounding environment.
Moreover, industries which are specifically involved in
cement manufacturing, typically, use limestone as a raw
material. Limestone is a non-renewable natural resource and,
20 therefore, an increased demand for cement as a binding
material is causing depletion of such natural resources
rapidly which is harmful for environment.
[0003] Conventionally, industrial waste and by-products are
used as supplementary cementitious products to decrease
25 dependency on cement and for effective use of such wastes
and by-products. Certain existing methods replace some parts
of cement with supplementary cementitious products for
producing concrete. It has been observed that strength
provided by supplementary cementitious products to concrete
30 is based on physical and chemical effects produced upon
addition of supplementary cementitious products to cement.
3
Physical effect entails arrangement of particles of the
supplementary cementitious products in open spaces between
adjacent particles of cement. As such, for providing high
strength to concrete it is necessary for particles of
5 supplementary cementitious products to fill gaps and open
spaces effectively between cement particles, which is
referred to as packing effect. Existing supplementary
cementitious products having particle size less than an
optimum size decrease contact area with surrounding cement
10 particles, thereby exhibiting sub-optimal packing effect.
[0004] Further, chemical effect involves reactions between
silicon oxide (SiO2) present in the supplementary
cementitious products and free lime (Ca (OH)2) produced from
a hydration reaction upon addition of supplementary
15 cementitious products to cement. The reactions produce a
cementitious mass which provides denseness to the concrete,
and as such reactivity between SiO2 present in the
supplementary cementitious products and free lime is
directly proportional to surface area of supplementary
20 cementitious product particles. Generally, silica fumes are
used as supplementary cementitious products, which comprises
very fine particle size and consequently a larger surface
area. It has been observed that a larger surface area may
enhance chemical reactivity, but contact area with
25 surrounding cement particles decreases, thereby adversely
affecting packing effect. Also, excess free lime is produced
as a by-product of cement hydration reaction, which is not
desirable as it has an adverse impact on the quality of
concrete. Excess free lime in concrete has serious
30 consequences on quality and durability of the product. Free
lime reacts with water and expands which affects the
soundness and integrity of the concrete structure in the
long run. Therefore, it is necessary to use an SCP which
4
contributes to producing a high-strength and a highperformance concrete.
[0005] In light of the aforementioned drawbacks, there is a
need for an improved composition of a supplementary
5 cementitious product and a method of preparation of the
improved supplementary cementitious product. There is a
need for a supplementary cementitious product which has
optimum particle size and provides an improved packing
effect. Also, there is a need for a supplementary
10 cementitious product which provides for optimal physical and
chemical effects when mixed with cement for producing a highstrength and a high-performance concrete. Further, there is
a need for a supplementary cementitious product that produces
a superior quality concrete, is environment friendly, cost
15 effective and reduces dependency on cement. Furthermore,
there is a need for reducing harmful effects of industrial
waste and by-products on the environment.
Summary of the invention
[0006] In various embodiments of the present invention, a
20 method for preparation of an improved supplementary
cementitious product is provided. The method comprises the
steps of firstly, procuring industrial waste comprising fly
ash and Ground Granulated Blast-furnace Slag (GGBS).
Secondly, the fly ash and GGBS are ground together to an
25 ultrafine particle size. Thirdly, pre-determined chemical
ingredients are mixed and heated with one or more polymers
for extracting a proportioned mixture of the chemical
ingredients and the polymers. Lastly, the fly ash and the
GGBS particles are blended with the extracted mixture of
30 proportioned chemical ingredients and polymers to form a
supplementary cementitious product comprising a blend of fly
ash, Ground Granulated Blast-furnace Slag (GGBS), a sodium
5
compound, Poly-carboxylic Ether (PCE), zinc, Triethyl,
Methyl Hydroxyethyl Cellulose (MHEC), and Re-dispersible
Polymer Powder (RDP).
5 [0007] In various embodiments of the present invention, a
composition of Supplementary Cementitious Product (SCP) is
provided. The composition comprises a blend of fly ash,
Ground Granulated Blast-furnace Slag (GGBS), a sodium
compound, Poly-carboxylic Ether (PCE), zinc, Triethyl,
10 Methyl Hydroxyethyl Cellulose (MHEC), and Re-dispersible
Polymer Powder (RDP). In an embodiment of the present
invention, the SCP comprises 35% by weight fly ash; 35% by
weight GGBS; 20% of Sodium Metasilicate (SM); 0.25% of PCE;
1% of zinc; 0.20% of Triethyl; 1.50% of MHEC; and 7.05% of
15 RDP
Brief description of the accompanying drawings
[0008] The present invention is described by way of
embodiments illustrated in the accompanying drawings
wherein:
20 [0009] Figs. 1, 1A, and 1B illustrate a flowchart depicting
a method for preparation of an improved Supplementary
Cementitious Product (SCP), in accordance with an embodiment
of the present invention;
[0010] Fig. 2 (202, 204 and 206) illustrates packing effect
25 and chemical reactivity exhibited by particles of the SCP,
in accordance with an embodiment of the present invention;
[0011] FIG. 3 illustrates a graphical representation of
comparative results of concrete mix proportioned by
replacing cement with the improved SCP, in accordance with
30 an embodiment of the present invention, and prior art SCPs;
6
[0012] FIG. 4 illustrates another graphical representation
of comparative results of concrete mix proportioned by
replacing cement with the improved SCP, in accordance with
an embodiment of the present invention, and prior art SCPs;
5 [0013] FIG. 5 illustrates yet another graphical
representation of comparative results of concrete mix
proportioned by replacing cement with the improved SCP, in
accordance with an embodiment of the present invention, and
prior art SCPs; and
10 [0014] FIG. 6 illustrates another graphical representation
of comparative results of concrete mix proportioned by
replacing cement with the improved SCP, in accordance with
an embodiment of the present invention, and prior art SCPs.
Detailed description of the invention
15 [0015] The present invention provides for an improved
composition of an SCP and a method of preparation of the
improved composition, in accordance with various embodiments
of the present invention. In particular, the present
invention provides for a SCP prepared from modification of
20 minerals present in industrial waste and by-products, by
blending with other chemical compounds (collectively
referred as pre-determined chemical ingredients) and one or
more polymer types in pre-defined quantities. The present
invention provides for a SCP which has optimum particle size
25 and provides an improved packing effect. Further, the present
invention provides a SCP with optimal physical and chemical
effects when mixed with cement for producing a high-strength
and a high-performance concrete. The present invention
further provides for effective re-use of industrial waste
30 and by-product for preparing SCP. Furthermore, the present
invention provides for a SCP, which is environmentally
friendly, cost effective and reduces dependency on cement.
7
The present invention provides for an SCP which is employed
to modify and enhance properties of concrete at a nanoscale
level.
[0016] The disclosure is provided in order to enable a
5 person having ordinary skill in the art to practice the
invention. Exemplary embodiments herein are provided only
for illustrative purposes and various modifications will be
readily apparent to persons skilled in the art. The general
principles defined herein may be applied to other embodiments
10 and applications without departing from the scope of the
invention. The terminology and phraseology used herein is
for the purpose of describing exemplary embodiments and
should not be considered limiting. Thus, the present
invention is to be accorded the widest scope encompassing
15 numerous alternatives, modifications, and equivalents
consistent with the principles and features disclosed
herein. For purposes of clarity, details relating to
technical material that is known in the technical fields
related to the invention have been briefly described or
20 omitted so as not to unnecessarily obscure the present
invention.
[0017] The present invention would now be discussed in
context of embodiments as illustrated in the accompanying
drawings.
25 [0018] In various embodiments of the present invention, the
invention provides for a method for preparing an improved
Supplementary Cementitious Product (SCP). In an embodiment
of the present invention, the SCP is prepared by using
industrial wastes and by-products comprising silicon oxide
30 (SiO2), which is blended with other chemical compounds and
polymers, as described in detail herein below. The improved
SCP is a purified and pulverized form of industrial waste
8
and by-products. Purification aids to remove non-reactive
SiO2 and other unwanted residues from the industrial waste
and by-products and pulverization makes the SCP finer and
uniform.
5 [0019] Fig. 1, Fig. 1A, and Fig. 1B illustrate a flowchart
depicting a method for preparation of the improved SCP, in
accordance with an embodiment of the present invention.
[0020] At step 102, industrial waste comprising fly ash
and Ground Granulated Blast-furnace Slag (GGBS) is procured.
10 In an exemplary embodiment of the present invention, 35% by
weight of fly ash and 35% by weight of GGBS is procured from
the industrial waste. The fly ash and GGBS are primary
sources of activated silica in SCP formation. Further, the
remaining 30% by weight of the industrial waste comprises
15 one or more chemicals, which enhances performance of the
SCP. In an exemplary embodiment of the present invention,
the one or more chemicals may include, but are not limited
to, zinc chromate (15%-20% by weight), and tri-ethanol amine
(0.2%–0.5% by weight). Zinc chromate provides anti-corrosive
20 properties to the SCP and tri- ethanol amine provides early
strength to the SCP.
[0021] At step 104, the procured fly ash and GGBS are ground
together to an ultrafine particle size. In an embodiment of
the present invention, the grinding of fly ash and GGBS
25 together is referred to as ‘mechanical activation’ which
results in production of ultrafine particles of fly ash and
GGBS. In an exemplary embodiment of the present invention,
the grinding of fly ash and GGBS is carried out by using a
Straight Roller grinding Mill (SRM) technique. Fly ash and
30 GGBS undergo multiple grinding cycles between wear rings and
grinding rollers present in the SRM for reducing the particle
size of the fly ash and GGBS and producing ultrafine
9
particles of fly ash and GGBS. SRM is coupled with a
classifier which produces ultrafine cut size of the fly ash
and GGBS particles and separates the ultrafine fly ash and
GGBS particles from coarse fly ash and GGBS particles. At
5 step 106, a sieve analysis of the ground fly ash and GGBS is
carried out. In an embodiment of the present invention, sieve
analysis of the ground fly ash and GGBS aids in efficiently
assessing particle size of the ground fly ash and GGBS. At
step 108, ultrafine fly ash and GGBS particles are separated
10 from coarse fly ash and GGBS particles present in the ground
fly ash and GGBS particles based on the sieve analysis. At
step 110, the coarse fly ash and GGBS particles are sent for
further grinding and for reducing the size of the coarse fly
ash and GGBS particles. The process of particle size
15 reduction is carried out until all the fly ash and GGBS
particles are reduced to the required size. Thus, the
grinding process converts all the fly ash & GGBS particles
into ultrafine particles for subsequent use.
[0022] At step 112, mixing of pre-determined chemical
20 ingredients with polymers is carried out. In an exemplary
embodiment of the present invention, the pre-determined
chemical ingredients comprise 20% by weight of Sodium
Metasilicate (SM), 1% by weight of zinc, and 0.20% by weight
of Triethyl. Further, sodium metasilicate is also a primary
25 source of activated silica in SCP. In another exemplary
embodiment of the present invention, polymers comprise 0.25%
by weight of Poly-carboxylic Ether (PCE), 1.50% by weight of
Methyl Hydroxyethyl Cellulose (MHEC), and 7.05% by weight of
Re-dispersible Polymer Powder (RDP). Further, PCE acts as a
30 superplasticizer, MHEC acts as a rheology modifier, and RDP
improves compressive and flexural strength of concrete of
the SCP. At step 114, the chemical ingredients along with
polymers are heated. In an embodiment of the present
invention, the chemical ingredients along with polymers are
10
heated at a pre-defined temperature of 150°C for a timeperiod of 1 hour. At step 116, a proportioned mixture of
chemical ingredients and polymers is extracted subsequent to
heating. The proportioned mixture of chemical ingredients
5 and polymers form a consistent mixture.
[0023] At step 118, ultrafine fly ash and GGBS particles
are blended with the extracted mixture of proportioned
chemical ingredients and polymers to form the SCP, which is
10 obtained at step 120. The composition of the obtained SCP is
35% by weight fly ash, 35% by weight GGBS, 20% of a sodium
compound i.e., Sodium Metasilicate (SM), 0.25% of PCE, 1% of
zinc, 0.20% of Triethyl, 1.50% of MHEC and 7.05% of RDP.
[0024] At step 122, a Quality Analysis (QA) of the obtained
15 SCP is carried out for usage. Table 1 illustrates QA data
associated with various test types carried out for
determining quality of the SCP.
Table 1
S.
No.
Test Type Standard
1. Fineness (Specific Surface),
M2/Kg
(Blaine’s Air Permeability
Method)
IS: 1727- 1967
2. Particle Retained on 45μ IS:
Sieve,
% by mass (Wet Sieving)
IS: 1727- 1967
3. Lime Reactivity
Average Compressive Strength,
N/mm2
IS: 1727- 1967
4. Soundness
Auto Clave Expansion (%)
IS: 1727- 1967
5. Specific Gravity IS: 1727- 1967
6. Compressive Strength at 28 Days,
N/mm2
% of Neat Mortar
IS: 1727- 1967
11
[0025] In an embodiment of the present invention, the
obtained SCP is a finely divided dry powder and is grey in
color. The bulk weight of the obtained SCP is 0.65 ton/m3,
with an optimum particle size in a range from 2 to 25 microns,
5 which is less than 2% retention on a 25-microns sieve. In an
exemplary embodiment of the present invention, the SCP
particles are spherical amorphous in shape.
[0026] In an embodiment of the present invention, the
obtained SCP is mixed with cement to produce a high-strength
10 and a high-performance concrete by replacing pre-defined
parts of cement with SCP. In an exemplary embodiment of the
present invention, 5 parts of cement by weight is replaced
with the SCP of the same quantity in order to form a concrete
of high-strength and high-performance. In another exemplary
15 embodiment of the present invention, 10% of cement is
replaced with 3% of SCP. In another exemplary embodiment of
the present invention 16% of cement is replaced with 3% of
SCP. Typically, an average particle size of cement is in a
range of between 20 to 90 microns. In the event the cement
20 particles form a cluster with random gaps in-between, it
requires SCPs of varied size but less than 25 microns size
for effective packing. Therefore, the obtained SCP having
particle size in the range of between 2 to 25 microns
provides effective gap filling and further enhances contact
25 area of the SCP particles with the surrounding cement
particles.
[0027] In an exemplary embodiment of the present invention,
in the event three cement particles form a cluster, size of
SCP required to fill the gap left in-between cement particles
30 is around 7 microns. In another exemplary embodiment of the
present invention, in the event four cement particles form
a cluster, it requires approximately 19 microns of SCP to
fill the gap effectively, and SCP particle may be in a
12
combination of size ranging from 2 to 25 microns. It has
been observed that, typically, finer, and even particles
size of SCPs decreases the contact area of individual
particles with cement and thus decreases the packing effect.
5 Therefore, particle size of the obtained SCP has been
formulated to maximize the packing effect, which varies from
2 to 25 microns. Fig. 2, (202, 204 and 206) illustrates
packing effect and chemical reactivity of the obtained SCP,
in accordance with an embodiment of the present invention.
10 [0028] Further, the obtained SCP has an increased
reactivity. Polymers used in preparation of the SCP act as
chemical activators and enhance chemical reactivity of the
SCP. The enhanced reactivity enables SCP to react effectively
and precipitate cementitious mass, which confers high15 strength and high-performance to concrete. In accordance
with embodiments of the present invention, a superior quality
of concrete is obtained when SCP is mixed with cement, which
is environmentally friendly.
[0029] Various experiments were performed for determining
20 strength of a concrete mixture prepared from cement and the
SCP obtained, in accordance with an embodiment of the present
invention, which was used to replace a proportioned amount
of cement. Further, silica fumes (used as SCP) were also
assessed for similar percentage replacement of cement for
25 comparison. Experiments conducted and results obtained, in
accordance with an embodiment of the present invention, are
demonstrated herein below.
Experiment no. 1
[0030] In experiment no. 1, 5% by weight of cement was
30 replaced with the obtained SCP and concrete was prepared to
determine the strength of cement. The total binder content
used for SCP was 460 Kg/Cum. The cubic compressive strength
13
of the concrete after 60 days was determined to be 69.35.
Further, for concrete prepared with silica fumes, such as
micro-silica and micro-silica2, the total binder content
used was 460 Kg/Cum. The cubic compressive strength of
5 concrete after 60 days was determined to be 61.20 and 54.35
respectively. It was observed that the strength of the
concrete prepared with SCP was higher as compared to the
concrete prepared with silica fume. Fig. 3 illustrates a
graphical representation of comparative results of concrete
10 mix proportioned by replacing cement with the improved SCP
and micro-silica and micro-silica2 based on experiment no.
1.
Experiment no. 2
15 [0031] In experiment no. 2, 5% by weight of cement was
replaced with the obtained SCP and 25% by weight of GGBS was
added to prepare concrete and determine strength of the
concrete. The total binder content used was 450 Kg/Cum. The
cubic compressive strength of the concrete after 60 days was
20 determined to be 66.40. Further, for concrete prepared with
silica fumes, such as micro-silica and micro-silica2, the
total binder content used was 450 Kg/Cum. The cubic
compressive strength of concrete after 60 days was 62.10 and
54.20 respectively. It was observed that the strength of the
25 concrete prepared with SCP was higher as compared to the
concrete prepared with silica fume. Fig. 4 illustrates a
graphical representation of comparative results of concrete
mix proportioned by replacing cement with the improved SCP
and micro-silica and micro-silica2 based on experiment no.
30 2.
Experiment no. 3
14
[0032] In experiment no. 3, 5% by weight of cement was
replaced with the obtained SCP and 25% by weight of GGBS was
added to prepare concrete and determine strength of the
concrete. The total binder content used was 500 Kg/Cum. The
5 cubic compressive strength of the concrete after 60 days was
64.80. Further, for concrete prepared with silica fumes,
such as micro-silica and micro-silica2, the total binder
content used was 500 Kg/Cum. The cubic compressive strength
of concrete after 60 days was 57.05 and 56.20 respectively.
10 It was observed that the strength of the concrete prepared
with SCP was higher as compared to the concrete prepared
with silica fume. Fig. 5 illustrates a graphical
representation of comparative results of concrete mix
proportioned by replacing cement with the improved SCP and
15 micro-silica and micro-silica2 based on experiment no. 3.
Experiment no. 4
[0033] In experiment no. 4, 10% by weight of cement was
20 replaced with the SCP and 30% by weight of GGBS was added to
prepare concrete and determine strength of the concrete. The
total binder content used was 500 Kg/Cum. The cubic
compressive strength of the concrete after 60 days was 63.95.
Further, for concrete prepared with silica fumes, such as
25 micro-silica and micro-silica2, the total binder content
used was 500 Kg/Cum. The cubic compressive strength of
concrete was 63.60 and 49.35 respectively. It was observed
that the strength of the concrete prepared with SCP was
higher as compared to the concrete prepared with silica fume.
30 Fig. 6 illustrates a graphical representation of comparative
results of concrete mix proportioned by replacing cement
with the improved SCP and micro-silica and micro-silica2
based on experiment no. 4.
15
[0034] In an exemplary embodiment of the present invention,
Table 2 illustrates a comparative table depicting the results
of experiment no. 1, 2, 3, and 4 in a summary form below:
5 Table 2
Component
Concrete
Composition
Ordinary Portland
Cement (OPC)+
SCP + GGBS
Total
Binder
Kg/Cum
Slump
Cube
compressive
strength
(After 60
Days)
Experiment No. 1
SCP 437+23+0(95%+5%+0) 460 95 69.35
Microsilica 437+23+0 460 95 61.20
Microsilica
2
437+23+0 460 95 54.35
Experiment No. 2
SCP 315 + 23 + 112
(70%+5%+25%)
450 100 66.40
Microsilica 315 + 23 + 112 450 100 62.10
Microsilica
2
315 + 23 + 112 450 100 54.20
Experiment No. 3
SCP 350 + 25 + 125
(70%+5%+25%)
500 100 64.80
Microsilica 350 + 25 + 125 500 100 57.05
Microsilica
2
350 + 25 + 125 500 100 56.20
Experiment No. 4
SCP 300 + 50 +150(60%+10%+30%) 500 100 63.95
Microsilica 300 + 50 +150 500 100 63.60
Microsilica
2
300 + 50 +150 500 100 49.35
[0035] Advantageously, as demonstrated above, unexpected
and surprising results were obtained in terms of compressive
strength of the concrete prepared with the improved SCP
10 composition prepared, in accordance with an embodiment of
the present invention. The prepared SCP is a purified
composition that contains highly reactive SiO2 and
specialized polymers (as described above), which
surprisingly enhances its chemical reactivity. The optimum
16
particle size of the SCP particles, which is in the range of
2 to 25 microns, provides effective packing effect and
contact area with the adjacent cement particles, when SCP is
mixed with cement, thereby forming concrete with high5 strength and high-performance. The prepared SCP utilizes
free lime and converts it into a more usable form which does
not affect properties of the concrete in the long term.
Further, the concrete formed using the SCP provides improved
workability and pumpability in order to achieve high
10 durability of structures. Further, the prepared SCP is
environmentally friendly as it enables effective use of
industrial wastes and by-products and decreases dependency
on cement for concrete preparation. Furthermore, the
obtained SCP provides superior quality of concrete when mixed
15 with cement and is environmentally friendly.

[0036] While the exemplary embodiments of the present
invention are described and illustrated herein, it will be
appreciated that they are merely illustrative. It will be
20 understood by those skilled in the art that various
modifications in form and detail may be made therein without
departing from the scope of the invention.
17
We claim:
1. A method for preparation of an improved supplementary
cementitious product, the method comprising the steps of:
5
procuring industrial waste comprising fly ash and Ground
Granulated Blast-furnace Slag (GGBS);
grinding the fly ash and GGBS together to an ultrafine
10 particle size;
mixing and heating pre-determined chemical ingredients
with one or more polymers for extracting a proportioned
mixture of the chemical ingredients and the polymers; and
15
blending the fly ash and the GGBS particles with the
extracted mixture of proportioned chemical ingredients and
polymers to form a supplementary cementitious product
comprising a blend of fly ash, Ground Granulated Blast20 furnace Slag (GGBS), a sodium compound, Poly-carboxylic
Ether (PCE), zinc, Triethyl, Methyl Hydroxyethyl Cellulose
(MHEC), and Re-dispersible Polymer Powder (RDP).
2. The method as claimed in claim 1, wherein a sieve analysis
25 of the ground fly ash and GGBS is carried out for assessing
the particle size of the ground fly ash and GGBS.
3. The method as claimed in claim 2, wherein ultrafine fly
ash and GGBS particles are separated from coarse fly ash
30 and GGBS particles present in the ground fly ash and GGBS
particles based on a sieve analysis, and wherein the coarse
fly ash and GGBS particles are sent for grinding.
18
4. The method as claimed in claim 1, wherein the predetermined chemical ingredients comprise 20% by weight of
Sodium Metasilicate (SM), 1% by weight of zinc, and 0.20%
by weight of Triethyl.
5
5. The method as claimed in claim 1, wherein the polymers
comprise 0.25% by weight of Poly-carboxylic Ether (PCE),
1.50% by weight of Methyl Hydroxyethyl Cellulose (MHEC),
and 7.05% by weight of Re-dispersible Polymer Powder
10 (RDP).
6. The method as claimed in claim 1, wherein the chemical
ingredients are heated along with the polymers at a predefined temperature of 150°C for a time-period of 1 hour.
15
7. The method as claimed in claim 1, wherein the SCP is mixed
with cement by replacing pre-defined parts of cement with
SCP to produce concrete.
20 8. A composition of Supplementary Cementitious Product (SCP),
the composition of SCP comprising:
a blend of fly ash, Ground Granulated Blast-furnace Slag
(GGBS), a sodium compound, Poly-carboxylic Ether (PCE),
25 zinc, Triethyl, Methyl Hydroxyethyl Cellulose (MHEC), and
Re-dispersible Polymer Powder (RDP).
9. The composition of SCP as claimed in claim 8, wherein the
sodium compound is Sodium Metasilicate (SM), and wherein
30 the composition of SCP comprises 35% by weight fly ash;
35% by weight GGBS; 20% of Sodium Metasilicate (SM); 0.25%
of PCE; 1% of zinc; 0.20% of Triethyl; 1.50% of MHEC; and
7.05% of RDP.
19
10. The composition of SCP as claimed in claim 8, wherein the
SCP is a finely divided dry powder and is grey in color,
and wherein the SCP particles are spherical amorphous in
shape.
5
11. The composition of SCP as claimed in claim 8, wherein bulk
weight of the SCP is 0.65 ton/m3 with a particle size in
a range of between 2 to 25 microns, and wherein the
particle size of the SCP provides effective gap filling
10 and enhanced contact area of the SCP particles with cement
particles when mixed with cement, thereby resulting in
improved packing effect and formation of a concrete with
high-strength and high-performance.