ASTM - C - Standard Test Method for Pullout Strength of Hardened Concrete - Designation: C Home; ASTM C standard by ASTM International, 05/01/ View all Printed Edition + PDF;; Immediate download; $; Add to Cart. geometric limits of ASTM-C, BS, UNI. EN , and UNI EN 03 [13–16]. The drilling and expansion.
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1 This test method is under the jurisdiction of ASTM Committee C09 on. Concrete 3 For referenced ASTM standards, visit the ASTM website, caite.info, or. C Standard Test Method for Pullout Strength of Hardened Concrete pull- out strength~ ADD TO CART. 10, $ Standard + Redline PDF Bundle. Astm c Pull Out Test en Hormigón Endurecido - Download as PDF File .pdf), Text File .txt) or read online. Normativa de ensayo de arrancamiento de.
Farmington Hills Referenced Documents each test system and each new concrete mixture. The first column shows the gauge In addition, post-installed pullout tests may be used to estimate the strength of concrete in existing constructions. For tests to a speci? MA
As a further precaution against rotation of the insert head, all threaded hardware should be checked prior to installation to ensure that it is free-turning and can be easily removed. A thread-lock compound is recommended to prevent loosening of the insert head from the shaft during installation and during vibration of the surrounding concrete. The thickness of the insert head and the yield strength of the metal shall be sufficient to avoid yielding of the insert during test. The sides of the insert head 5.
The diameter of the insert shaft at the head d1 shall be no more than 0.
The difference between the diameters of the undercut groove and the core hole d1 shall be sufficient to prevent localized failure and ensure that a conic frustum is extracted during the test see Note 6. The expanded ring shall bear uniformly on the entire bearing area of the groove. NOTE 6—A core hole diameter of 18 mm 0.
NOTE 7—The limits for dimensions and con? NOTE 11—Inserts may be manually placed into unformed horizontal concrete surfaces. The inserts should be embedded into the fresh concrete by means that ensure a uniform embedment depth and a plane surface perpendicular to the axis of the insert shaft. Installation of inserts should be performed or supervised by experienced personnel.
Experience indicates that pullout strengths are of lower value and more variable for manually-placed surface inserts than for inserts attached to the formwork. NOTE 8—Hydraulic pumps that provide a constant loading rate may give more uniform test results than pumps that apply the load intermittently.
NOTE 9—For the most accurate results, gages should have a maximum value indicator that preserves the value of the ultimate load when ultimate failure and subsequent stress release occur. Calibration shall be by one of the methods in Practices E 4, or with a compression testing machine conforming to the requirements of Test Method C 39 using the calibration procedures described in the Annex to this test method.
Sampling 6. Clear spacing between the inserts and the edges of the concrete shall be at least four times the head diameter.
Inserts shall be placed so that reinforcement is outside the expected conical failure surface by more than one bar diameter, or the maximum size of aggregate, whichever is greater. NOTE 10—A reinforcement locator is recommended to assist in avoiding reinforcement when preparing post-installed tests. Before mounting the loading system, remove any debris or surface abnormalities to ensure a smooth bearing surface that is perpendicular to the axis of the insert.
Drill a core hole perpendicular to the surface to provide a reference point for subsequent operations and to accommodate the expandable insert and associated hardware.
The use of an impact drill is not permitted. The ground surface shall be perpendicular to the axis of the core hole. The groove shall be concentric with the core hole. NOTE 12—To control the accuracy of these operations, a support system should be used to hold the apparatus in the proper position during these steps.
Protect the hole from ingress of additional water until the completion of the test. NOTE 13—Penetration of water into the failure zone could affect the measured pullout strength; therefore, water must be removed from the hole immediately after completion of drilling, grinding, and undercutting operations. If the test will not be completed immediately after preparation of the hole, water must not be allowed to enter the hole before completing the test. Inserts shall be located in those portions of the structure that are critical in terms of exposure conditions and structural requirements.
Procedure 7. All inserts for the 3 7. Record the maximum gage reading to the nearest half of the least division on the dial. If the insert is to be tested only to a speci? C 7. Before use, the relationships must be established for each test system and each new concrete mixture.
Such relationships are more reliable if both pullout test specimens and compressive strength test specimens are of similar size, consolidated to similar density, and cured under similar conditions. Note 1: Published reports 1- 17 4 by different researchers present their experiences in the use of pullout test equipment.
Refer to ACI The Appendix provides a means for comparing pullout strengths obtained using different configurations.
In addition, post-installed pullout tests may be used to estimate the strength of concrete in existing construction. This test method does not provide statistical proce- 4.
When a measure of the 1. No other units of measurement are included in this means of a jack reacting against a bearing ring. The pullout test method. These notes and whether a minimum level of in-place pullout strength has been footnotes excluding those in tables and figures shall not be attained. Significance and Use safety concerns, if any, associated with its use. It is the 5. Warning—Fresh the embedded insert, bearing ring dimensions, depth of hydraulic cementitious mixtures are caustic and may cause embedment, and the type of aggregate lightweight or normal chemical burns to skin and tissue upon prolonged exposure.
Before use, the relationships must be established for 2. Referenced Documents each test system and each new concrete mixture. Such rela- tionships are more reliable if both pullout test specimens and 2. Refer to ACI The Appendix provides a means for comparing pullout strengths E74 Practice of Calibration of Force-Measuring Instruments obtained using different configurations.
Current edition approved May 1, Published June Originally 1 post-tensioning may proceed; approved in Last previous edition approved in as C — No further reproductions authorized.
Metal components of quality of the outer zone of concrete members and can be of cast-in-place inserts and attachment hardware shall be of benefit in evaluating the cover zone of reinforced concrete similar material to prevent galvanic corrosion. The shaft shall be attached firmly to the center of the 5. The insert shaft shall be threaded to the insert strength of concrete within the region represented by the conic head so that it can be removed and replaced by a stronger shaft frustum defined by the insert head and bearing ring.
Post-installed members. For post-installed inserts. The thickness of the insert head and groove. Apparatus ensure that the bearing ring is concentric with the insert. For typical to pullout the insert. The insert shall given concrete placement in a structural element. Fri Oct 7 The sides of the insert head vibration of the surrounding concrete. The diameter of the insert shaft at the head d1 diameters have been used 1. The insert head should be provided with the shall be sufficient to prevent localized failure and ensure that a means.
The insert head diameter shall be 6. A thread-lock compound is recommended to prevent loosening of the insert head from the shaft during installation and during NOTE 6—A core hole diameter of 18 mm and an undercut groove Copyright by ASTM Int'l all rights reserved. The expanded insert shall bear uniformly on the entire be checked prior to installation to ensure that it is free-turning and can be bearing area of the groove.
The difference between minimize bonding with the concrete. Larger aggregate sizes may result in increased scatter of the test results because the large particles expandable insert shall be cut so that the distance between the can interfere with normal pullout of the conic frustum. Tests 15 have shown that nominal shall not exceed 0. As a further conic frustum of concrete is extracted during the test see Note precaution against rotation of the insert head.
NOTE 7—The limits for dimensions and configurations for pullout test manually place inserts into unformed horizontal concrete inserts and apparatus are intended to accommodate various systems. Clear spacing between the inserts and the edges supported firmly and so that the bearing ring is supported of the concrete shall be at least 3.
Before mounting the loading system. NOTE 12—To control the accuracy of these operations. For a given test system. The groove reinforcement when planning the locations of post-installed tests.
The axis of each shaft shall be given system. Protect the hole from ingress of 7. Sampling accommodate the expandable insert and associated hardware.
Installation of inserts shall be more uniform test results than pumps that apply load intermittently. The thickness of the ring t shall be at least 0. Follow shall be concentric with the core hole. Procedure outside diameter d4 of at least 1. The prepared surface shall be per- Inserts shall be placed so that reinforcement is outside the pendicular to the axis of the core hole.
Standardize the pullout apparatus using a testing machine 8. NOTE 10—More than the minimum number of inserts should be 8. The use of an impact drill is not permitted.
Drill a core hole perpendicular to the surface to the force measured by the testing machine or load cell. Analog gauges shall be designed NOTE 11—Experience indicates that pullout strengths are of lower value so that the pullout force can be estimated to the nearest 0. The inserts shall be embedded into the fresh concrete 6. Calculation test method.
Precision and Bias would be as follows: Record the maximum gauge