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C-179
Linear Change
| Drying And Linear Change Of Refractory Plastic And Ramming Mix Specimens. T9410 |
Three 9" bricks are molded in a press at 1000 psi and the linear drying and firing shrinkage is determined. A 50 lb. representative sample should be submitted, including a specification of the type/class of the materials. |
C-181
Workability Index
| Workability Index Of Fireclay And High-Alumina Plastic Refractories. T9420 |
The workability/consistency of as-received material is determined. Cylindrical specimens are impacted under a 14-lb. load and the percent deformation is reported. the testing of five specimens is recommended by ASTM. A 10 lb. representative sample should be submitted, including the production date for the material. |
C-198
Mortar Bond
| Cold Bonding Strength Of Refractory Mortar. T9440 |
Fireclay brick halves are bonded with a 1/16" thick joint. After air and oven drying, the MOR is determined for the brick/joint assembly. Testing of 5 specimens is suggested by ASTM. At least 10 lbs. of mortar should be submitted for analysis. |
C-199
Mortar Pier
| Pier Test Of Refractory Mortars. T9450 |
A multiple brick pier is made with 1/8" thick vertical and horizontal joints. the assembly is air and oven dried, and Then fired for 5 hours at the specified temperature. If the mortar flows from the joints during firing, it fails the test. At least 10 lbs. of mortar should be submitted of analysis. |
C-403
Castable Set Time |
Time of Setting of Concrete Mixes by Penetration Resistance. |
Cylindrical probes of various diameters are pushed 1" into a concrete mix at various times to measure its comprehensive strength. Data is plotted to determine the 500 psi initial and 4000 psi final set times. |
C-417
Bulk Density of Aggreegate
| Thermal Conductivity Of Unfired Monolithic Refractories. T9520 |
The heat flow through a refractory is determined with a water-cooled copper calorimeter. the temperature limit of refractory must be specified, as well as the hot face or mean test temperatures desired. the maximum hot face temperature for testing is 2700?F. the specimens required are six 9" bricks or an 18" x 13.5" x 2.5" slab. |
C-491
MOR of Plastics
| Modulus Of Rupture Of Air-Setting Plastic Refractories. T9550 |
Five 9" x 4 1/2" x 2 1/2" or 3" bricks are prepared in a hydraulic press at 1000 psi. MOR is determined after drying and firing the specimens. |
C-860
Ball-In-Hand Consistency
| Determining And Measuring Consistency Of Refractory Concrete. T9670 |
This method determines the optimum water content and consistency of castable products. Consistency is judged with the Ball-in-Hand method or measured with the Flow Table method. |
C-862
Castable Prep.
| Preparing Refractory Concrete Specimens By Casting. T9680 |
Five brick specimens are prepared using the water content determined in ASTM C-860. This procedure assures the preparation of uniform samples for testing purposes. At least 50 lbs. of each material for testing should be submitted. Mixing is performed in a Hobart mixer and casting is performed either by spading or by vibration. |
C-865
Firing Castables | Firing Refractory Concrete Specimen. T9700 |
Firing schedules are for five refractory concrete specimens made in accordance with ASTM C-862 and classified by ASTM C-401. Price includes linear change measurement. NOTE: Many of the tests listed for castables are also used for gunning refractories. Gunned specimens prepared by the supplier according to ASTM. C-903 can be tested upon request. |
C-973
Pressing Basic Gun Mixes | Preparing Test Specimens From Basic Refractory Gunning Products By Pressing. T9730 |
Five brick specimens are prepared using the water content specified by the manufacturer. This procedure assures the preparation of uniform specimens for testing purposes. At least 50 lbs. of each material for testing should be submitted. Mixing is performed in a Hobart mixer and specimens are formed at 1800 psi. |
C-974
Casting Basic Mixes
| Preparing Test Specimens From Basic Refractory Castable Products By Casting. T9740 |
Five brick specimens are prepared using the water content specified by the manufacturer. This procedure assures the preparation of uniform specimens for testing purposes. At least 50 lbs. of each material for testing should be submitted. Mixing is performed in a Hobart mixer and casting is eiTher performed by spading or by vibration. |
C-975
Pressing Basic Ramming Mixes
| Preparing Test Specimens From Basic Refractory Ramming Products By Pressing. T9745 |
Five brick specimens are prepared using the water content specified by the manufacturer. This procedure assures the preparation of uniform specimens for testing purposes. At least 50 lbs. of each material for testing should be submitted. Mixing is performed in a Hobart mixer and specimens are pressed at 10,000 psi. |
C-1054
Pressing Plastics and Ramming Mixes
| Pressing And Drying Refractory Plastic And Ramming Mix Specimens. T9750 |
Five brick specimens are prepared at 1000 psi. This procedure assures the preparation of uniform specimens for testing purposes. At least 50 lbs. of each material for testing should be submitted. |
C-1445
Flow Table Consistency |
Castable Consistency Measured Using a Flow Table Penetrometer. |
A conical mold is filled with a castable, the mold is removed, and the flow table dropped 15 times. The percent flow is determined by calculating the increase in cone diameter. |
C-1446
Consistency of Self-Flow Castables |
Measuring Consistency And Working Time Of Self-Flowing Refractory Castable. |
A conical mold filled with castable is removed and the increase in cone diameter tracked until it drops to 25% of the intial value. |
| Mortar Bond Strength |
Bonding Strength After Firing. T9820 |
Fireclay brick halves are bonded with a 1/16" thick joint. After air and oven drying and a 5 hour hold at the specified firing temperature, the MOR is determined for the brick/joint assembly. Five 9" bricks are required. At least 10 lbs. of mortar should be submitted for analysis. Specimen Preparation and MOR Same as ASTM C-198 Specimen Firing Same as Periodic Kiln Firing. |
| Castable Shrinkage |
Curing Or Drying Change. T9840 |
For refractory concretes the percent linear or volume change can be calculated after curing based on mold dimensions and after drying based on cured dimensions. At least 50 lbs. of each material for testing should be submitted. |
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