106.3.2.67 TM-67 - Revision history

Hoskir: updated formatting

2025-04-10T18:23:41Z

updated formatting

← Older revision		Revision as of 13:23, 10 April 2025
Line 1:		Line 1:
	TM-67 was deleted July 24, 2012.		'''TM-67 was deleted July 24, 2012.'''


			<div style="background-color: #f8f9fa; border: 1px solid #a2a9b1; text-align:left;">
	[[~~Category:~~106.3.2 Material Inspection Test Methods]]		[[106.3.2_Material_Inspection_Test_Methods\|106.3.2 Material Inspection Test Methods]]
			</div>

Hoskir: Hoskir moved page 106.3.2.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw to 106.3.2.67 TM-67: this test was deleted

2025-04-10T18:23:13Z

Hoskir moved page 106.3.2.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw to 106.3.2.67 TM-67: this test was deleted

← Older revision	Revision as of 13:23, 10 April 2025
(No difference)

Smithk: TM-67 was deleted, per CM. It is no longer valid.

2012-07-24T19:56:30Z

TM-67 was deleted, per CM. It is no longer valid.

← Older revision		Revision as of 14:56, 24 July 2012
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	~~\|'''Video'''~~
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	~~\|[[media:106.7.~~67 ~~T 119~~.~~wmv\|<center>AASHTO T 119 instructions</center>]]~~
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	~~This test method prepares materials and concrete specimens for use in AASHTO T161, Procedure B, 35-day cure.~~

	~~==106.3.2.67.1 Procedure==~~

	~~===106.3.2.67.1.1 Aggregate Preparation===~~

	Obtain an approximate one megagram sample of stone from the ledge or source in question in the same manner as [[:Category:1001 General Requirements for Material#1001.3.1 Initial Evaluation\|the initial approval sample in EPG 1001.3.1 Initial Evaluation]].

	~~Crush the entire sample to the desired maximum size. For MoDOT testing, this will be done in the Laboratory.~~

	~~Blend the entire sample of the crushed aggregate by the "windrow" method as follows:~~
	Clear a floor area large enough for the entire sample, insuring that it is cleaned and absent of moisture. Place the sample in an even number of windrows (minimum of 4) using approximately equal divided amounts. Combine two similar sized windrows at a time, starting from opposite ends of adjacent rows. A shovel full of aggregate taken from the end of the windrow is to represent the entire cross section from top to bottom to ensure an even distribution of the aggregates. Using alternate shovel fulls from the opposite ends of adjacent rows, spread the aggregate down the length of a new row. Continue combining rows until only one windrow remains.

	Screen the crushed aggregate into individual fractions representing each sieve for the desired gradation(s) requirements of [http://www.modot.mo.gov/business/standards_and_specs/Sec1005.pdf Sec 1005], which will depend on the ledge intended use and on past history of the ledge stone being tested. Enough material is to be screened so that it can be recombined into a total quantity suitable for testing, with a gradation meeting the middle of the gradation to be tested with the exception of the 1.18 mm material that is not monitored. All remaining material is stored for future use.

	~~Determine the specific gravity and absorption for each aggregate fraction in accordance with AASHTO T 85, for use in the concrete mix design.~~

	~~Determine the aggregate correction factors for each sample of ledge stone being tested in accordance with ASTM C 231.~~

	~~===106.3.2.67.1.2 Concrete Mix Design===~~

	Unless otherwise required, design all concrete mixes for "Pavement Concrete" in accordance with [http://www.modot.mo.gov/business/standards_and_specs/Sec0501.pdf Sec 501] to be air entrained at 5.5 ±1.5 percent air, using a cement factor<sup>1</sup> of 340 kg/m<sup>3</sup>, with the water content adjusted to provide a 40 mm slump, with a minimum of 25 mm and a maximum slump not to exceed that specified in Sec 501 for the designed class of concrete.

	~~<sup>1</sup> 370 kg/m3 for gradation F~~

	~~Use Class A Missouri River sand meeting [http://www.modot.mo.gov/business/standards_and_specs/Sec1005.pdf Sec 1005.2].~~

	~~Use low-alkali Type I, portland cement meeting [http://www.modot.mo.gov/business/standards_and_specs/Sec1019.pdf Sec 1019] and AASHTO M 85, Table 1A.~~

	~~Use air-entraining admixture meeting [http://www.modot.mo.gov/business/standards_and_specs/Sec1054.pdf Sec 1054].~~

	~~===106.3.2.67.1.3 Concrete Batching and Curing===~~

	~~Batch and cure the concrete in accordance with AASHTO T 126 except as noted herein. The procedures for batching and curing shall be identical for all batches.~~

	~~The materials and all batching shall be at room temperature. Measuring the temperature of batches is not required.~~

	~~Each batch is to be sized to make 2 beams, 1 cylinder, 1 slump test and 1 air test.~~
	~~Approximately 0.035 m<sup>3</sup> is required.~~

	~~Cylinders shall be 152.4 mm in diameter and 304.8 mm tall.~~

	~~Beams shall be 88.9 x 114.3 x 406.4 mm.~~

	~~When more than 1 aggregate or variable is being tested, randomize the batching order to reduce the possible variations due to different mixing times.~~

	~~Make three batches per ledge or source to provide replicate samples for analysis.~~

	~~Make a slump measurement in accordance with [[media:106.7.67 T 119.wmv\|AASHTO T 119]] immediately after mixing.~~

	~~Determine the air content of the fresh concrete batch in accordance with AASHTO T 152, Pressure Method.~~

	~~For each batch, moist cure the cylinder for 28 days and the beams for 35 days.~~

	~~==106.3.2.67.2 Curing and Testing==~~

	~~Test one cylinder per batch for 28-day compressive strength in accordance with AASHTO T 22.~~

	~~Test one beam per batch to determine 35-day flexural strength by the "center point" method in accordance with AASHTO T 177. Use the second beam for AASHTO T 161 testing.~~

	~~==106.3.2.67.3 Report==~~

	After batching, report the ledge number, source, location, specific gravities and absorptions of the aggregate; batching times, batch weights, material sources, slump and air tests for the fresh concrete mixture; and associated specimen identifications.

	~~After testing, report the specimen identifications, test method and test results.~~


	[[Category:106.3.2 Material Inspection Test Methods]]		[[Category:106.3.2 Material Inspection Test Methods]]

Smithk: /* 106.3.2.67.1.1 Aggregate Preparation */ "ensure" correction

2010-07-09T13:31:13Z

106.3.2.67.1.1 Aggregate Preparation: "ensure" correction

← Older revision		Revision as of 08:31, 9 July 2010
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	Blend the entire sample of the crushed aggregate by the "windrow" method as follows:		Blend the entire sample of the crushed aggregate by the "windrow" method as follows:
	Clear a floor area large enough for the entire sample, insuring that it is cleaned and absent of moisture. Place the sample in an even number of windrows (minimum of 4) using approximately equal divided amounts. Combine two similar sized windrows at a time, starting from opposite ends of adjacent rows. A shovel full of aggregate taken from the end of the windrow is to represent the entire cross section from top to bottom to ~~insure~~ an even distribution of the aggregates. Using alternate shovel fulls from the opposite ends of adjacent rows, spread the aggregate down the length of a new row. Continue combining rows until only one windrow remains.		Clear a floor area large enough for the entire sample, insuring that it is cleaned and absent of moisture. Place the sample in an even number of windrows (minimum of 4) using approximately equal divided amounts. Combine two similar sized windrows at a time, starting from opposite ends of adjacent rows. A shovel full of aggregate taken from the end of the windrow is to represent the entire cross section from top to bottom to ensure an even distribution of the aggregates. Using alternate shovel fulls from the opposite ends of adjacent rows, spread the aggregate down the length of a new row. Continue combining rows until only one windrow remains.

	Screen the crushed aggregate into individual fractions representing each sieve for the desired gradation(s) requirements of [http://www.modot.mo.gov/business/standards_and_specs/Sec1005.pdf Sec 1005], which will depend on the ledge intended use and on past history of the ledge stone being tested. Enough material is to be screened so that it can be recombined into a total quantity suitable for testing, with a gradation meeting the middle of the gradation to be tested with the exception of the 1.18 mm material that is not monitored. All remaining material is stored for future use.		Screen the crushed aggregate into individual fractions representing each sieve for the desired gradation(s) requirements of [http://www.modot.mo.gov/business/standards_and_specs/Sec1005.pdf Sec 1005], which will depend on the ledge intended use and on past history of the ledge stone being tested. Enough material is to be screened so that it can be recombined into a total quantity suitable for testing, with a gradation meeting the middle of the gradation to be tested with the exception of the 1.18 mm material that is not monitored. All remaining material is stored for future use.

Smithk: Per CM, article moved to conform with Sec 106. Old EPG 106.7.67 had no appreciable history and 973 hits

2010-07-01T12:42:52Z

Per CM, article moved to conform with Sec 106. Old EPG 106.7.67 had no appreciable history and 973 hits

New page

{|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right"
|-
|'''Video'''
|-
|[[media:106.7.67 T 119.wmv|<center>AASHTO T 119 instructions</center>]]
|}

This test method prepares materials and concrete specimens for use in AASHTO T161, Procedure B, 35-day cure.

==106.3.2.67.1 Procedure==

===106.3.2.67.1.1 Aggregate Preparation===

Obtain an approximate one megagram sample of stone from the ledge or source in question in the same manner as [[:Category:1001 General Requirements for Material#1001.3.1 Initial Evaluation|the initial approval sample in EPG 1001.3.1 Initial Evaluation]].

Crush the entire sample to the desired maximum size. For MoDOT testing, this will be done in the Laboratory.

Blend the entire sample of the crushed aggregate by the "windrow" method as follows:
Clear a floor area large enough for the entire sample, insuring that it is cleaned and absent of moisture. Place the sample in an even number of windrows (minimum of 4) using approximately equal divided amounts. Combine two similar sized windrows at a time, starting from opposite ends of adjacent rows. A shovel full of aggregate taken from the end of the windrow is to represent the entire cross section from top to bottom to insure an even distribution of the aggregates. Using alternate shovel fulls from the opposite ends of adjacent rows, spread the aggregate down the length of a new row. Continue combining rows until only one windrow remains.

Screen the crushed aggregate into individual fractions representing each sieve for the desired gradation(s) requirements of [http://www.modot.mo.gov/business/standards_and_specs/Sec1005.pdf Sec 1005], which will depend on the ledge intended use and on past history of the ledge stone being tested. Enough material is to be screened so that it can be recombined into a total quantity suitable for testing, with a gradation meeting the middle of the gradation to be tested with the exception of the 1.18 mm material that is not monitored. All remaining material is stored for future use.

Determine the specific gravity and absorption for each aggregate fraction in accordance with AASHTO T 85, for use in the concrete mix design.

Determine the aggregate correction factors for each sample of ledge stone being tested in accordance with ASTM C 231.

===106.3.2.67.1.2 Concrete Mix Design===

Unless otherwise required, design all concrete mixes for "Pavement Concrete" in accordance with [http://www.modot.mo.gov/business/standards_and_specs/Sec0501.pdf Sec 501] to be air entrained at 5.5 ±1.5 percent air, using a cement factor1 of 340 kg/m3, with the water content adjusted to provide a 40 mm slump, with a minimum of 25 mm and a maximum slump not to exceed that specified in Sec 501 for the designed class of concrete.

1 370 kg/m3 for gradation F

Use Class A Missouri River sand meeting [http://www.modot.mo.gov/business/standards_and_specs/Sec1005.pdf Sec 1005.2].

Use low-alkali Type I, portland cement meeting [http://www.modot.mo.gov/business/standards_and_specs/Sec1019.pdf Sec 1019] and AASHTO M 85, Table 1A.

Use air-entraining admixture meeting [http://www.modot.mo.gov/business/standards_and_specs/Sec1054.pdf Sec 1054].

===106.3.2.67.1.3 Concrete Batching and Curing===

Batch and cure the concrete in accordance with AASHTO T 126 except as noted herein. The procedures for batching and curing shall be identical for all batches.

The materials and all batching shall be at room temperature. Measuring the temperature of batches is not required.

Each batch is to be sized to make 2 beams, 1 cylinder, 1 slump test and 1 air test.
Approximately 0.035 m3 is required.

Cylinders shall be 152.4 mm in diameter and 304.8 mm tall.

Beams shall be 88.9 x 114.3 x 406.4 mm.

When more than 1 aggregate or variable is being tested, randomize the batching order to reduce the possible variations due to different mixing times.

Make three batches per ledge or source to provide replicate samples for analysis.

Make a slump measurement in accordance with [[media:106.7.67 T 119.wmv|AASHTO T 119]] immediately after mixing.

Determine the air content of the fresh concrete batch in accordance with AASHTO T 152, Pressure Method.

For each batch, moist cure the cylinder for 28 days and the beams for 35 days.

==106.3.2.67.2 Curing and Testing==

Test one cylinder per batch for 28-day compressive strength in accordance with AASHTO T 22.

Test one beam per batch to determine 35-day flexural strength by the "center point" method in accordance with AASHTO T 177. Use the second beam for AASHTO T 161 testing.

==106.3.2.67.3 Report==

After batching, report the ledge number, source, location, specific gravities and absorptions of the aggregate; batching times, batch weights, material sources, slump and air tests for the fresh concrete mixture; and associated specimen identifications.

After testing, report the specimen identifications, test method and test results.

[[Category:106.3.2 Material Inspection Test Methods]]