ASTM C 1611 PDF
22 Mar ASTM CCM 14 Standard Test Method for Slump Flow of Self- Consolidating Concrete_建筑/土木_工程科技_专业资料。Designation. Testing. • Visual Stability Index (VSI). – Based on slump flow test – ASTM C • Column Segregation Test – ASTM C • Penetration Test – ASTM C Buy ASTM C /CM: TEST METHOD FOR SLUMP FLOW OF SELF -CONSOLIDATING CONCRETE from SAI Global.
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To perform this 16111, a second person times the flow with a stopwatch. Appendix X1 provides a non-mandatory procedure that may be used to provide an indication of relative viscosity of self-consolidating concrete mixtures.
ASTM CCM 14 Standard Test Method for Slump Flow of Self-Consolidating Concrete_图文_百度文库
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. It is the responsibility of the user of aatm standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Place the slump cone in the center of the flow board. Start timing as the v is lifted, stop timing when slump flow reaches the 20 inch mark.
Moisten the surface of the board wipe off excess water. VSI Criteria 0 No evidence of segregation in slump flow patty or in the wheelbarrow or container. The second circle has a larger diameter, which may be 26 inches in diameter. The filling ability gives an indication of the Astj ability to fill a form under it own weight.
The mold may be constructed either with or without a seam. Tape Measure or Ruler. The slump flow test is used to determine the filling ability of self consolidating concrete SCC.
Trowel off excess concrete from the top of the slump cone, and remove any concrete that has fallen onto the board around the cone. Combining values from the two 1611 may result in non-conformance with the standard.
Appendix X1 provides non-mandatory visual rating criteria that may be used to classify the ability of a self-consolidating concrete mixture to resist segregation stability. SCC mix must be able to fill a form, passing around reinforcement, without segregation. Therefore, this test method is considered applicable to self-consolidating concrete having coarse aggregate aastm to 25 mm [1 in. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard.
Slightly overfill the concrete above the top of the mold. For most SCC applications the concrete should flow out to the T 20 mark in 2 to 7 seconds. No mortar halo or aggregate pile in the slump flow patty but some slight bleed or air popping on the surface of the concrete in the wheelbarrow or container. Figure 2 Check the edge of the concrete on the board for excessive bleed water called a mortar halo.
There is no indication of segregation or separation. H old in center position until all concrete has exited the slump cone.
No evidence of segregation in slump flow patty or in the wheelbarrow or container. This procedure provides instructions 16111 determining the slump flow of self consolidating 16111 in accordance with ASTM C No rodding is required since concrete should flow easily.
Warning —Fresh hydraulic cementitious mixtures are caustic and may cause astn burns to skin and tissue upon prolonged exposure.
Historical Version s – view previous versions of standard. Report the slump flow as the average of the two diameter readings. The two diameter measurements should not be greater than two inches in difference if they are it may indicate a sloping board.
Aggregate distribution is good and particles are carried to the outer edge of the slump flow. Cone may be placed either in the inverted or upright position. Stand on the foot pieces to prevent leakage when placed in the upright position. If T 20 is greater than 7 seconds, the mix may be too thick high viscosity and may not flow through the reinforcing.
The mold shall be provided with foot pieces and handles. Link to Active This link will always route to the current Active version of the standard. The concrete should flow ashm to final slump diameter with no segregation. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Fill the aztm cone in one lift using a funnel. Obtain the sample in accordance with IM The interior of the mold shall be relatively smooth and free from projections such as protruding rivets.
ASTM C1611/C1611M – 14
If T 20 is less than 2 seconds, the mix may be too thin low viscosity and may segregate. Work Item s – proposed revisions of this standard. Figure 3 The mix should appear uniform, with the coarse aggregate visible and evenly dispersed. Draw two centerlines on the board and two concentric circles, the first ashm has a diameter of 20 inches. The mold shall be free of dents.
Check that the board is on a stable, horizontal surface.