106.3.2.62 TM-62, Prequalification of Dust Suppressants - Revision history

Smithk: Moved AASHTO T 119 video from deleted EPG 103.6.2.67 TM-67 to this article.

2012-07-24T19:52:01Z

Moved AASHTO T 119 video from deleted EPG 103.6.2.67 TM-67 to this article.

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	This test determines the effects on compressive strength and air content of air-entrained portland cement concrete and compressive strength of non-entrained portland cement concrete when using a chemical dust suppressant on coarse aggregates.		This test determines the effects on compressive strength and air content of air-entrained portland cement concrete and compressive strength of non-entrained portland cement concrete when using a chemical dust suppressant on coarse aggregates.
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			\|[[media:106.7.67 T 119.wmv\|<center>AASHTO T 119 instructions</center>]]
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	==106.3.2.62.1 Required Materials==		==106.3.2.62.1 Required Materials==

Smithk: Per CM, link removed.

2012-07-24T18:52:00Z

Per CM, link removed.

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	===106.3.2.62.3.1 Slump===		===106.3.2.62.3.1 Slump===
	The slump of the freshly mixed concrete shall be determined in accordance with ~~[[106.3.2.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw#106.3.2.67.1.3 Concrete Batching and Curing\|~~AASHTO T 119]].		The slump of the freshly mixed concrete shall be determined in accordance with AASHTO T 119.

	===106.3.2.62.3.2 Air Content===		===106.3.2.62.3.2 Air Content===

Smithk at 18:49, 24 July 2012

2012-07-24T18:49:07Z

← Older revision		Revision as of 13:49, 24 July 2012
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	==106.3.2.62.3 Testing==		==106.3.2.62.3 Testing==

	===106.7.62.3.1 Slump===		===106.3.2.62.3.1 Slump===
	The slump of the freshly mixed concrete shall be determined in accordance with [[106.3.2.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw#106.3.2.67.1.3 Concrete Batching and Curing\|AASHTO T 119]].		The slump of the freshly mixed concrete shall be determined in accordance with [[106.3.2.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw#106.3.2.67.1.3 Concrete Batching and Curing\|AASHTO T 119]].

Smithk: /* 106.7.62.3.1 Slump */ updated link

2010-07-01T12:44:07Z

106.7.62.3.1 Slump: updated link

← Older revision		Revision as of 07:44, 1 July 2010
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	===106.7.62.3.1 Slump===		===106.7.62.3.1 Slump===
	The slump of the freshly mixed concrete shall be determined in accordance with [[106.7.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw#106.7.67.1.3 Concrete Batching and Curing\|AASHTO T 119]].		The slump of the freshly mixed concrete shall be determined in accordance with [[106.3.2.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw#106.3.2.67.1.3 Concrete Batching and Curing\|AASHTO T 119]].

	===106.3.2.62.3.2 Air Content===		===106.3.2.62.3.2 Air Content===

Smithk: Per CM, article moved to conform with Sec 106. Old EPG 106.7.62 had no appreciable history and 551 hits

2010-07-01T12:33:52Z

Per CM, article moved to conform with Sec 106. Old EPG 106.7.62 had no appreciable history and 551 hits

New page

This test determines the effects on compressive strength and air content of air-entrained portland cement concrete and compressive strength of non-entrained portland cement concrete when using a chemical dust suppressant on coarse aggregates.

==106.3.2.62.1 Required Materials==

1) Dust suppressant.

2) Coarse aggregate, representative of material on which the dust suppressant is proposed to be used.

3) Fine aggregate, Class A.

4) Type I portland cement.

5) MoDOT approved air-entraining agent.

6) Water.

==106.3.2.62.2 Sample Preparation==

===106.3.2.62.2.1 Coarse Aggregate===

Treated coarse aggregate shall be treated with the dust suppressant at the manufacturer's recommended maximum rate.

===106.3.2.62.2.2 Concrete Mix Design===

Two concrete mixtures shall be prepared for each of the following designs. One mixture shall be prepared using treated coarse aggregate, and one mixture shall be prepared using the same coarse aggregate that has not been treated.

====106.3.2.62.2.2.1 Air-Entrained Concrete====

::Cement Factor: 340 kg/m<sup>3</sup>
::Water/Cement Ratio, max: 0.49
::Slump, mm, max: 65
::Air Content: 5.0 - 8.0
::Percent Fine Aggr.: 38

====106.3.2.62.2.2.2 Non-Air-Entrained Concrete====

::Cement Factor: 340 kg/m<sup>3</sup>
::Water/Cement Ratio, max: 0.53
::Slump, mm, max: 65
::Percent Fine Aggr.: 38

===106.3.2.62.2.3 Mixing===

Mixing of the concrete using the design factors listed herein shall be performed in accordance with the applicable requirements of AASHTO T 126. During mixing the slump shall be at least 25 mm, and the water-cement ratio shall be maintained as constant as possible.

===106.3.2.62.2.4 Specimens===
Three 152.4 mm x 304.8 mm cylinders shall be prepared from each of the mixtures in accordance with the applicable requirements of AASHTO T 126.

The cylinders shall be cured for 7 days in accordance with the applicable requirements of AASHTO T 126.

==106.3.2.62.3 Testing==

===106.7.62.3.1 Slump===
The slump of the freshly mixed concrete shall be determined in accordance with [[106.7.67 TM-67, Preparation of Concrete for Use in AASHTO T161 Freeze and Thaw#106.7.67.1.3 Concrete Batching and Curing|AASHTO T 119]].

===106.3.2.62.3.2 Air Content===
The air content of the freshly mixed concrete shall be determined in accordance with AASHTO T 152.

===106.3.2.62.3.3 Compressive Strength===
Two cylinders from each concrete mixture shall be tested for 7-day compressive strength in accordance with AASHTO T 22.

===106.3.2.62.3.4 Linear Traverse===
Test specimens shall be taken from one cylinder of each concrete mixture at 7 days cure by sawing and polishing and shall be tested for the characteristics of the air-void system in accordance with ASTM C457.

==106.3.2.62.4 Report==

The report shall list the following for each concrete mixture and each design:

:(a) Slump of freshly mixed concrete.

:(b) Air content of freshly mixed concrete.

:(c) Individual Compressive strengths at 7-day cure.

:(d) Spacing factor of the hardened concrete.

[[Category:106.3.2 Material Inspection Test Methods]]