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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Historical Version s – view previous versions of standard.
ASTM C1611/C1611M – 14
The mold shall be provided with foot pieces and handles. Obtain the sample in accordance with IM There is no indication of segregation or separation. SCC mix must be able to fill a form, passing aastm reinforcement, without segregation.
For most SCC applications the concrete should flow out to the T 20 mark in 2 to 7 seconds. Trowel off excess concrete from the top of the slump cone, and remove any concrete that has fallen onto the board around the cone. The slump flow test is used to aetm the filling ability of self consolidating concrete SCC.
ASTM C / CM – 18 Standard Test Method for Slump Flow of Self-Consolidating Concrete
If T 20 is less than 2 seconds, the mix may be too thin low viscosity and may segregate. The interior of the mold shall be relatively smooth and free from projections such as protruding rivets.
Therefore, this test method is considered applicable to self-consolidating concrete having coarse aggregate up to 25 mm [1 in. Fill the slump cone in one lift using a funnel. Appendix X1 provides a non-mandatory procedure that may be used to provide an indication of relative viscosity of self-consolidating concrete mixtures.
The concrete should flow out to final slump 1611 with no segregation.
These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. The two diameter measurements should not be greater than two inches in difference if they are it may indicate a sloping board.
Report the slump flow as the average of the two diameter readings. 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. The mold may be constructed either with or without a seam. Figure 3 The mix should appear uniform, with the coarse aggregate visible and evenly dispersed. Link to Active This link will always route to the current Active version of the standard.
It is the responsibility of the asgm of this standard to establish d safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Start timing as the cone is lifted, stop timing when slump flow reaches the 20 inch mark. If T 20 is greater than 7 seconds, the mix may be too thick high viscosity and may not flow through d reinforcing.
Check that the board is on a stable, horizontal surface. No rodding is required since concrete should flow easily. Slightly overfill the concrete above the top of the mold. Combining values from the two systems may result in non-conformance with the standard. Figure 2 Check the edge of the concrete on the board for excessive bleed water called a mortar halo. No evidence of segregation in slump flow patty or in the wheelbarrow or container. To perform this test, a second person times the flow with ast, stopwatch.
The second circle has a larger diameter, which may be 26 inches in diameter. Place the slump cone in the center of the flow board.
ASTM C/CM – 14 – Standard Test Method for Slump Flow of Self-Consolidating Concrete
Warning —Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. Tape Measure or Ruler. This procedure provides instructions for determining the slump flow of self consolidating concrete in accordance with ASTM C The filling ability gives an indication of the SCC ability to fill a form under it own weight.
The values stated atm each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Stand on the foot pieces to prevent leakage when placed in the upright position. Cone may be placed either in the inverted or upright position. The mold shall be free of dents. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as aetm of the standard. Moisten the surface of the board wipe off excess water. 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.
Draw two centerlines on the board and two concentric circles, the first circle has a diameter of 20 inches. 16611 old in center asttm until all concrete has exited the slump cone. Aggregate distribution is good and particles are carried to the outer edge of the slump flow. VSI Criteria 0 No evidence of segregation in slump flow patty or in the wheelbarrow or container.
Work Item s – proposed revisions of this standard.