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With the HYDRO-EPOXY MORTAR SYSTEM deteriorated
concrete surfaces can be patched and repaired. The result is a waterproof,
chemically resistant topping that will level and beautify even the worst concrete
substrates. This epoxy modified mortar consists of cement, sand and
Hydro-Seal 75 waterproofing.
In areas where pitted concrete has to be level to accept NORTHERN
SEAMLESS FLOORING & other types of flooring, HYDRO-EPOXY MORTAR can be applied as thin as required.
Remember that most Seamless Flooring failures are caused by inferior primers,
excessive moisture, and lack of preparation. With HYDRO-EPOXY
MORTAR the worst deteriorated substrate areas will be repaired and leveled
with a waterproof, chemically resistant, water-base epoxy mortar. Call Northern at 1 800 346 5543 for
chemical resistance information and detailed physical properties.
I. INTRODUCTION: By adding cement and dry sand to blended Hydro-Seal 75 components, a
bonding mortar is created. This makes an excellent crack filler, leveling and tuck
pointing material for masonry joints. Hydro-Seal 75 possesses tenacious bonding qualities
as thin as required. Hydro-Seal 75 is a solvent free, low modulus epoxy mortar binder
designed for mixing with suitable aggregate to provide a waterproof and wear resistant
slab topping for applications over Portland cement concrete floor slabs.
II. DESCRIPTION: Hydro-Seal 75 Epoxy Mortar System consists of:
A. Hydro-Seal 75
B. CEMENT: No. 1 Portland (gray or white)
C. SAND: No. 30 or No. 70 Sieve Dry Silica: Aggregate washed kiln-dried graded and
bagged silica sand containing a minimum of 98% silicon dioxide by weight aggregate shall
be skip graded within the following limits
| Sieve Size |
Percent by weight passing |
| #4 |
100 |
| #8 |
70 to 100 |
| #16 |
33 to 75 |
| #30 |
50 to 30 |
| #50 |
5 to 20 |
| #100 |
0 to 5 |
| #200 |
0 to 3 |
III. TYPICAL USES:
A. For substrate repair
1. Leveling
2. Resurfacing
3. Patching masonry
B. For forming masonry
C. As a coving system.
IV. PHYSICAL ANALYSIS AND TECHNICAL DATA
A. Properties of cured binder when cured 7 days at 77° F and tested at 77 ° F.
| Tensile Strength |
ASTM D-638 |
2000 PSI |
| Tensile Elongation |
ASTM D-638 |
25 % |
| Compressive Yield Strength |
ASTM 695 |
2000PSI |
B. Properties of Cured Mortar:3.1.1 by volume mix when cured 7
days at 77 degrees F and tested at 77 degrees F.
| Tensile Strength |
ASTM C-190 |
1300 PSI |
| Compressive Strength |
ASTM C-190 |
8000 PSI |
C. CHEMICAL RESISTANCE TEST:HYDRO-SEAL 75 resurfacing mortar will
resist occasional splashing and spillage of practically most chemicals without adverse
effect, in most instances:
| CHEMICAL |
EFFECT |
| Detergent |
None |
| Acetic Acid 3% |
Discolored |
| Citric Acid 3% |
None |
| Kerosene |
None |
| Ammonium Hydroxide30% |
None |
| Calcium Chloride 10% |
None |
| Lactic Acid 3% |
None |
| Mineral Spirits |
None |
| Potassium Hydroxide 10% |
None |
| Sodium Chloride 20% (Brine Solution) |
None |
| Motor Oil Sol. 30 grade |
None |
| Sugar Solution 30% |
None |
| Steam (30 hrs) |
None |
| Urine |
None |
| Sodium Hydroxide 5% |
None |
| Isopropyl Alcohol 100% |
None |
| Textile Spirits 100% |
None |
| Toluene 100% |
Discolored |
V. APPLICATION:
A. Tools: Straight edge trowel, mortar mixer or wheel
barrel
B. Procedure:
1. Prepare Substrate:
a) Conditions of surfaces shall be dry and free of dirt, paint, grease, oil, rust
and other contaminants.
b) Surface shall be inspected and approved before the work has begun.
c) New concrete shall have been properly cured and seasoned.
d) Concrete surfaces shall be roughed by wire brushing, sand blasting, chipping, or
etching.
e) All shrinkage shall have occurred.
f) Defects shall be corrected. Open cracks by undercutting or squaring off, rather than
"V" cutting.
2. Mixing:
a) Ratio: 3 parts #30 silica sand, 1 part Portland Cement, 1 part Mixed Hydro-Seal
75 liquid binder. For Thickness over 1/8": Mixing Ratio by volume
b) Mix Hydro-Seal 75
(1) measure epoxy parts carefully. Mix no more material than
can be used within 30-45 minutes. Thoroughly mix each component individually before
combining the two. Combine 1.1 ratio of component A and component B in a clean pail with a
jiffy-mixer for a minimum of 5 minutes.
c) Pour mixed epoxy binder into mortar mixer and add
calibrated quantities of the different aggregate sizes.
(1) Add aggregates in order of size starting with the
coarsest. Add dry Portland cement is last.
d) Mix ingredients thoroughly until streak free. Mix an
additional 3 minutes after adding all the aggregate and cement mixture. Mix until a
desired consistency is reached so that you may use a trowel.
Note: Batching: mix only the amount of material that can be used in 25-45 minutes at 70
degrees F.
3. Apply to necessary areas with straight edge trowel
a) Patch all cracks and voids, and cove all corners and joints.
(1) Coving should extend at least two inches out and up from
floor joints.
(2) Areas around form-ties in poured walls should be opened and patched.
(3) Allow patching to dry for two hours at 75° F or until
dry to the touch.
C. For Thin hairline cracks
1. For a thickness Under 1/16" a mixture of Hydro-Seal 75( mixed) and Portland
cement can be used without sand to feather edge hairline cracks and bridge small voids.
The amount of cement added to the mixed Hydro-Seal 75 is determined by the thickness of
the crack.
VI. Caution:
A. When skin contact occurs, wash immediately withsoap
and water
B. Do not ingest.
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