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Concrete is a compound
material made from sand,
gravel and cement. The
cement is a mixture of
various minerals which
when mixed with water,
hydrate and rapidly
become hard binding the
sand and gravel into a
solid mass. The oldest
known surviving concrete
is to be found in the
former Yugoslavia and
was thought to have been
laid in 5,600 BC using red
lime as the cement.
The first major concrete
users were the Egyptians
in around 2,500 BC and
the Romans from 300 BC
The Romans found that
by mixing a pink sand-like
material which they
obtained from Pozzuoli
with their normal
lime-based concretes
they obtained a far
stronger material. The
pink sand turned out to
be fine volcanic ash and
they had inadvertently
produced the first
'pozzolanic' cement.
Pozzolana is any siliceous
or siliceous and
aluminous material which
possesses little or no
cementitious value in itself
but will, if finely divided
and mixed with water,
chemically react with
calcium hydroxide to form
compounds with
cementitious properties.
The Romans made many
developments in concrete
technology including the
use of lightweight
aggregates as in the roof
of the Pantheon, and
embedded reinforcement
in the form of bronze
bars, although the
difference in thermal
expansion between the
two materials produced
problems of spalling. It is
from the Roman words
'caementum' meaning a
rough stone or chipping
and 'concretus' meaning
grown together or
compounded, that we
have obtained the names
for these two now
common materials.
Plastic Cement
is most commonly used to make stucco. Plastic cement has a high degree of
workability and plasticity as well as excellent pump ability characteristics. A
check of local building codes and job specifications will confirm the correct
sand to cement proportions.
Available in 94 Lb. bags
Common uses: stucco, mortar, scratch and brown coats
Common Cement
is a Type II/V low alkali cement and is the primary ingredient in making
concrete. Also referred to as "common" or "regular" cement, it is most
commonly used in general construction to make concrete as well as for
flowable fill or grout. Colton Portland Cement meets or exceeds the standards
for Type I cement.
Available in 94 Lb. bags
Type II/V Portland Cement
CHEMSTAR HYDRATED LIME TYPE S
50 lb. *Hydrated lime helps reduce soil acidity
Used for making type masonry mortars and Portland-lime stuccos
Raises pH of garden soil
Faster acting than limestone
Utilizes nutrients more effectively
Orco Blended Products Masonry Mortar
is a dry, factory blended mortar specifically designed for use by masonry
contractors. The product is produced under strict quality control guidelines in
accordance with A.S.T.M. and U.B.C. standards. OBP Masonry Mortar
provides a product superior to jobsite mixing. It is available in several
packaging options to provide savings in handling and mixing. It is available in
standard mix designs as well as special orders for individual job requirements.
Colors: Orco Blended Masonry Mortar is available in many colors to match
any block.
Thin Set Mortar
is a premium blend of Portland Cement and sand modified with self-curing
water retentive, adhesive chemicals and fillers. The unique formulation
provides greater bulk, which results in more coverage and less job cost.
Concrete Mix
may be used anywhere a quality concrete mix is required. The 70/30 Grout
Concrete Mix is especially suited for grouting masonry cells.
Advantages:
High Quality
Convenience of handling one product
Excellent for multi story and difficult access jobs
Systems that save time and money on labor