| CHEMICAL
ANALYSIS |
|
|
Haydite is produced from high-grade shale which is suitable for
face brick manufacture. As a result of being burned at a temperature of approximately 2200
Deg. F., Haydite has no combustible content and is chemically inert. A typical chemical
analysis of the finished product is shown in the following table: |
|
Silica (SiO2)
|
66.8%
|
Ferric Oxide (Fe2O3)
|
3.9
|
Alumina (Al2O3)
|
18.9
|
Calcium Oxide (CaO)
|
0.9
|
Magnesium Oxide (MgO)
|
1.7
|
Sulfur Trioxide (SO3)
|
0.6
|
Alkalies (Na2O)
|
4.6
|
ABSORPTION |
|
|
The approximate 24-hour absorption of Cleveland Haydite is 10% by
weight. Because of the non-connecting cellular structure of the aggregate and the small
size of the cells, the absorption will vary substantially with the length of time it is
exposed to water. The absorption procedures used with heavy aggregate are not readily
adaptable to lightweight aggregate because of the difficulty of determining the saturated
surface dry condition. As a result of these facts, the knowledge of the moisture content
for mix control purposes is not particularly meaningful. |
| A.S.T.M.
SPECIFICATIONS |
|
|
Haydite is produced to comply with the physical and chemical
requirements of applicable A.S.T.M. standards except that the medium
coarse size (B) is often supplied with additional eight mesh materials
to achieve desired block textures.
C-330 - Lightweight Aggregate for
Structural Concrete
C-331 - Lightweight Aggregate for Concrete Masonry Units
C-332 - Lightweight Aggregate for Insulating Concrete (Group II) |
| AVAILABLE SIZES |
| The Cleveland Plant produces the following sizes
of Haydite aggregate: |
"A"
size Haydite is a fine gradation which is used for cast-in-place concrete, lightweight
masonry, precast concrete, athletic running tracks and for "Gunite" or
"Shotcrete" applications. |
|
"BX"
size Haydite is a blend of fine and medium coarse Haydite used where bin availability
limits the use of separate sizes. It is ordinarily intended for block production. Its use
for cast-in-place concrete should be limited to low density, low strength roof fill. |
|
"B"
size Haydite is a medium coarse gradation used for cast-in-place concrete, precast
concrete, and concrete block production. |
|
| "C" size
Haydite is a coarse gradation used for cast-in-place concrete, precast concrete, and
Geotechnical fill. |
| |
| H"
size Haydite is a clean small coarse graduation used for horticultural
uses. |
"L"
size Haydite is a coarse gradation used for ground cover. |
|
All sizes are used in various
horticulture applications: "C" for hydroponics; "H" for soil
amendments; "B" and "C" and "L" for pine bark replacement. |
| GRADATION & UNIT WEIGHT |
| Size |
Size Designation |
Approx. Unit Weight |
Per Cubic Yard |
| A |
No. 4 x 0 |
54 lbs./cf. |
1,450 lbs. |
| BX |
3/8" x 0 |
56 lbs./cf. |
1,500 lbs. |
| B |
3/8" x No. 8 |
49 lbs./cf. |
1,325 lbs. |
| C |
3/4" x No. 4 |
48 lbs./cf. |
1,300 lbs. |
| H |
3/16"x 1/16" |
50 lbs./cf. |
1,350 lbs. |
| L |
1 1/2" x 3/4 " |
46 lbs./cf. |
1300
lbs. |
|
|
|
|
Indicated unit weights of aggregates are only approximate and should not
be used as the basis for establishing batch weights. Batch weights should be based on
actual unit weights as determined by the Standard Method of Test for Unit Weight of
Aggregate (ASTM) Designation; C 29) Utilizing the shoveling procedure described in section
11.
|
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Information |
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