aashto t 119

AASHTO T 119 - SLUMP OF HYDRAULIC CEMENT CONCRETE

Conduct this procedure according to AASHTO T 119Consult the current edition of AASHTO for procedure in its entirety and equipmentspecification details

SCOPE

A sample of freshly mixed concrete is placed and compacted by rodding in a slumpcone The mold is raised and the concrete allowed to slump The distance betweenthe original and displaced position of the center of the top surface is measured andreported as the slump of the concrete The slump measurement is used as anindicator of consistency

This test is not considered applicable to non-cohesive (slumps greater than 9 or230 mm) and non-plastic (slumps less than 12 or 15 mm) concrete or concretebatched with coarse aggregate over 1frac12 (38 mm) in size

REFERENCED DOCUMENTS

AASHTO T 141 Sampling Freshly Mixed Concrete

APPARATUS

Slump cone and base plate or non-absorbent rigid flat surfaceTamping rod 24 (600 mm) length and 58 (16 mm) diameter roundedto a hemispherical tipScoopRulerSponge or brush

TEST SPECIMEN

Obtain a concrete sample according to AASHTO T 141Test must be started within five minutes of obtaining the final portion of the compositesample

The entire test from the start of the filling through removal of the mold must becompleted without interruption in 2frac12 minutes

PROCEDUREDampen the mold and place it on a level nonabsorbent rigid surface or the base plateprovided with the cone Hold mold in place by standing on the 2-foot pieces or byclamps if using a base plate Immediately fill the cone in three layers Each layershould be approximately 13 the volume of the cone

One third is approximately 2-58 (65 mm) depth two thirds is approximately 6-18(155 mm) depth

Move each full scoop around the top edge of the cone as the concrete slides from itto ensure even distribution of the concrete within the cone

Consolidate each layer of concrete 25 times with the tamping rod rounded end down

Distribute the strokes in a uniform manner over the cross section of the cone Inclinethe rod slightly to reach the perimeter Distribute approximately half the strokes nearthe perimeter and progress to vertical strokes toward the center Use a spiral pattern

Tamp the bottom layer through its full depth

Fill the second layer Consolidate 25 times with the tamping rod Rod the layerthrough its full depth and just penetrate the first layer

Fill the final layer Keep the concrete above the top edge of the mold at all timeswhen rodding the third layer Add additional concrete if needed and continue rodding

Rod through the layer but just penetrate the previous layer

After the consolidation of the top layer has been completed strike-off the surface ofthe concrete with the tamping rod using a screeding and rolling motion Continue tohold mold down firmly and remove any excess concrete from the area surroundingthe base of the mold

Loosen the clamps on the base plate if necessary or step off the foot pieces

Remove the mold by pulling straight up and off with a steady lift Do not use anylateral or twisting motion The mold must be removed in 5 plusmn 2 seconds

Immediately measure the slump by determining the vertical difference between thetop of the mold and the displaced original center of the top surface of the specimen

If you are using a slump cone without a base plate turn the mold upside down andlay the tamping rod across its base extending over the slumped specimen If using abase plate lift the handle on the base plate

If a decided falling away or shearing off of concrete from one side or portion of themass occurs disregard the test and make a new test on another portion of thesample

AASHTO T 154-06 - TIME OF SETTING OF HYDRAULIC CEMENT PASTE

AASHTO Designation T 154-06ASTM Designation C 266-04

SCOPE

This test method covers the determination of the time of setting of hydraulic-cement paste

The values stated in SI units are to be regarded as the standard The values given in parenthesesare for information only

This standard may involve hazardous materials operations and equipment This standard does notpurport to address all of the safety problems associated with its use It is the responsibility of theuser of this standard to establish appropriate safety and health practices and determine theapplicability of regulatory limitations prior to use

Warning Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skinand tissue upon prolonged exposure The use of gloves protective clothing and eye protection isrecommended Wash contact area with copious amounts of water after contact Wash eyes for aminimum of 15 minutes Avoid exposure of the body to clothing saturated with the liquid phase ofthe unhardened material Remove contaminated clothing immediately after exposure

The text of this standard references notes and footnotes which provide explanatory materialThese notes and footnotes (excluding those in tables and figures) shall not be considered asrequirements of the standard


AASHTO Standards

1048607 M 201 Moist Cabinets Moist Rooms and Water Storage Tanks Used in the Testing ofHydraulic Cements and Concretes

1048607 M 210 Use of Apparatus for the Determination of Length Change of Hardened Cement Paste Mortar and Concrete

1048607 T 107 Autoclave Expansion of Portland Cement

1048607 T 127 Sampling and Amount of Testing of Hydraulic Cement

1048607 T 129 Normal Consistency of Hydraulic Cement

1048607 T 162 Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency

ASTM Standards

1048607 C 670 Practice for Preparing Precision Statements for Test Methods for ConstructionMaterials

1048607 C 1005 Specification for Weights and Weighing Devices for Use in the Physical Testing ofHydraulic Cements

1048607 D 1193 Specification for Reagent Water

APPARATUS

Flat Trowel having a sharpened straight-edged steel blade 100 to 150 mm (4 to 6 in) in length

Mixer Bowl Paddle and Scrapermdashconforming to the requirements of T 162

Glass Graduates 200 or 250 mL capacity conforming to the requirements of M 210

Mass Determining Devices conforming to the requirements of ASTM C 1005 The devices fordetermining mass shall be evaluated for precision and bias at a total load of 1000 g

Plane Non-Absorptive Plates 100 mm plusmn 5 mm (4 plusmn 0197 in) square of similar planenesscorrosivity and absorptivity to that of glass (see T 129 Figure 1 item H)

Needles conforming to the following requirements

The initial time of setting shall have a mass of 1134 plusmn 05 g (0250 plusmn 0001 lb) and a tip diameterof 212 plusmn 005 mm (0084 plusmn 0002 in)

The final time of setting needle shall have a mass of 4536 plusmn 05 g (1000 plusmn 0001 lb) and a tipdiameter of 106 plusmn 005 mm (0042 plusmn 0002 in)

The needle tips shall be cylindrical for a distance of 48 plusmn 05 mm (0189 plusmn 0020 in) The needle ends shall be plane and at right angles to the axis of the rod and shall be maintained in a clean condition

SUMMARY OF TEST METHOD

Sufficient water is added to the cement that is being tested to produce a paste of normalconsistency A specimen is molded from this paste and is tested for time of setting by means ofthe initial and final needles The initial time of setting is the time required for the testspecimen to bear the initial needle without appreciable indentation while the timerequired for the test specimen to bear the final needle without appreciable indentationis the final time of setting

PROCEDURE

Preparation of Cement Paste

Obtain the cement paste used for determination of the time of setting from one of thefollowing methods

Prepare a new batch of paste by mixing 650 g of cement with the percentage of mixing waterrequired for normal consistency (T 129) following the procedure described in T 162

At the option of the tester use the paste remaining from the batch used for the autoclave expansion specimen (T 107) or from the normal consistency determination (T 129)

Molding Test SpecimenmdashFrom the cement paste make a pat approximately 76 mm (3 in) in diameter and approximately 13 mm (05 in) in thickness at the center with a flat top and tapering to a thin edge on a clean plane non absorptive plate In molding the pat flatten the cement paste first on the glass and then form the pat by drawing the trowel from the outer edge toward the center then flattening the top After making place the pat in the moist cabinet or moist room and allow it to remain there except when the determinations of time of setting are being made

Time of Setting DeterminationmdashDetermine the time of setting by holding the needle in a verticalposition and lightly applying it to the surface of the pat

AASHTO T 22 ndash COMPRESSIVE STRENGHT OF CYLINDRICAL CONCRETE SPECIMEN

SCOPE

This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores It is limited to concrete having a unit weight in excess of 50 lbft3 (800 kgm3)

The values stated in English units are the standard

This standard may involve hazardous materials operations and equipment This standard does not purport to address all of the safety problems associated with its use It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use

Warning Means should be provided to contain concrete fragments during sudden rupture of specimens Tendency for sudden rupture increases with increasing concrete strength (Note 1)

Note 1 The safety precautions given in the Manual of Aggregate and Concrete Testing located in the Related Materials section of Volume 0402 of the Annual Book of ASTM Standards are recommended

The text of this standard references notes which provide explanatory material These notes shall not be considered as requirements of the standard


AASHTO Standards

R 39 ndash Making and Curing Concrete Test Specimens in the Laboratory

T 23 ndash Making and Curing Concrete Test Specimens in the Field

T 24 ndash Obtaining and Testing Drilled Cores and Sawed Beams of Concrete

T 231 ndash Capping Cylindrical Concrete Specimens

22 ASTM Standards

C 873 ndash Test Method for Compressive Strength of Concrete Cylinders Cast in Place in Cylindrical Molds

C 1231 ndash Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders

E 74 ndash Practice for Calibration of Force-Measuring Instruments for Verifying the Load Indication of Testing Machines

APPARATUS

USTM- Universal Testing Machine


This test method consists of applying a compressive axial load to molded cylinders or cores at a rate which is within a prescribed range until failure occurs The compressive strength of the specimen is calculated by dividing the maximum load attained during the test by the cross-sectional area of the specimen

PROCEDURE

Compression tests of moist-cured specimens shall be made as soon as practicable after removal from moist storage

Test specimens shall be kept moist by any convenient method during the period between removal from moist storage and testing They shall be tested in the moist condition

All test specimens for a given test age shall be broken within the permissible time tolerances prescribed as follows

Test Age Permissible Tolerance

12 h plusmn 025 h or 21


3 days + 2 h or 28

7 days + 6 h or 36

28 days + 20 h or 30

56 days + 40 h or 30

90 days + 2 days 22

Fill the final layer Keep the concrete above the top edge of the mold at all timeswhen rodding the third layer Add additional concrete if needed and continue rodding

Rod through the layer but just penetrate the previous layer

After the consolidation of the top layer has been completed strike-off the surface ofthe concrete with the tamping rod using a screeding and rolling motion Continue tohold mold down firmly and remove any excess concrete from the area surroundingthe base of the mold

Loosen the clamps on the base plate if necessary or step off the foot pieces

Remove the mold by pulling straight up and off with a steady lift Do not use anylateral or twisting motion The mold must be removed in 5 plusmn 2 seconds

Immediately measure the slump by determining the vertical difference between thetop of the mold and the displaced original center of the top surface of the specimen

If you are using a slump cone without a base plate turn the mold upside down andlay the tamping rod across its base extending over the slumped specimen If using abase plate lift the handle on the base plate

If a decided falling away or shearing off of concrete from one side or portion of themass occurs disregard the test and make a new test on another portion of thesample



SCOPE







AASHTO Standards







ASTM Standards




APPARATUS












PROCEDURE








SCOPE








AASHTO Standards





22 ASTM Standards




APPARATUS




PROCEDURE







3 days + 2 h or 28

7 days + 6 h or 36

28 days + 20 h or 30

56 days + 40 h or 30

90 days + 2 days 22



SCOPE







AASHTO Standards







ASTM Standards




APPARATUS












PROCEDURE








SCOPE








AASHTO Standards





22 ASTM Standards




APPARATUS




PROCEDURE







3 days + 2 h or 28

7 days + 6 h or 36

28 days + 20 h or 30

56 days + 40 h or 30

90 days + 2 days 22

APPARATUS












PROCEDURE








SCOPE








AASHTO Standards





22 ASTM Standards




APPARATUS




PROCEDURE







3 days + 2 h or 28

7 days + 6 h or 36

28 days + 20 h or 30

56 days + 40 h or 30

90 days + 2 days 22


SCOPE








AASHTO Standards





22 ASTM Standards




APPARATUS




PROCEDURE







3 days + 2 h or 28

7 days + 6 h or 36

28 days + 20 h or 30

56 days + 40 h or 30

90 days + 2 days 22

PROCEDURE







3 days + 2 h or 28

7 days + 6 h or 36

28 days + 20 h or 30

56 days + 40 h or 30

90 days + 2 days 22

aashto t 119

Documents