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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The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
ASTM CCM 14 Standard Test Method for Slump Flow of Self-Consolidating Concrete_图文_百度文库
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. If T 20 is greater than 7 seconds, the mix may be too thick high viscosity and may not flow through the reinforcing. 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.
This procedure provides instructions for determining the slump flow of self consolidating concrete in accordance with ASTM C The mold may be constructed either with or without a seam.
Start timing as the cone is lifted, stop timing when slump flow reaches the 20 inch mark. Cone may be placed astmm in the inverted or upright position.
The interior of the mold shall be relatively smooth and free from projections such as protruding rivets. Moisten the surface of the board wipe off excess water. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. asstm
The two diameter measurements should not be greater than two inches in difference if they are it v indicate a sloping board. Place the slump cone in the center of the flow board.
There is no indication of segregation or separation. No rodding is required since concrete should flow easily.
Report the slump flow as the average of the two diameter readings. Draw two centerlines on the board and two concentric circles, the first circle has a diameter of 20 inches. The astmm shall be free of dents. The filling ability gives an indication of the SCC ability to fill a form under it own weight.
ASTM C1611/C1611M – 14
If T 20 is less than 2 seconds, the mix may be too thin low viscosity and may segregate. Tape Measure or Ruler. Trowel off excess concrete from the top of the slump cone, and remove any concrete that has fallen onto the board around the cone.
To perform this test, a second person times the flow with a stopwatch. Warning —Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. The second circle has a larger diameter, which may be 26 inches in diameter. Work Item s – proposed revisions of this asfm. Appendix X1 provides non-mandatory visual rating criteria that may be used to classify the ability of a 11611 concrete mixture to resist segregation stability.
Slightly overfill the concrete above the top of the mold.
Fill the slump cone in one lift using a funnel. VSI Criteria 0 No evidence of segregation in slump asstm patty or in the wheelbarrow or container. No evidence of segregation in slump flow patty or in the wheelbarrow or container. Obtain the sample in accordance with IM Historical Version s – view previous versions of standard.
ASTM C Standard
Link to Active This link will always route to the current Active version of the standard. The concrete should flow out to final slump 161 with no segregation.
H old in center position until all concrete has exited the slump cone. Stand on the foot pieces to prevent leakage when placed in the upright position. These notes and footnotes 161 those in tables and figures shall not be considered as requirements of the standard. The slump flow test is used to determine the filling ability of self consolidating concrete SCC. Therefore, this test method is considered applicable to self-consolidating concrete having coarse aggregate up to 25 mm [1 in.
Check that the board is on a stable, horizontal surface. Figure 3 The mix should appear uniform, with the coarse aggregate visible and evenly dispersed. Figure 2 Check the edge of the concrete on the board for excessive bleed water called a mortar halo.