DateLaboratory Testing of Portland Cement Concrete Patch Material ...

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placed into a 6-inch high, 6-inch diameter cylindrical mold. At regular intervals, theresistance of the mortar to penetration by a standard needle was measured. As the resistanceapproached 500 psi, the measurement intervals were shortened. Once the mortar was able toresist a pressure of 500 psi, the initial time of set had been reached and the testing wascomplete. Proprietary rapid setting concrete patch materials typically reach the initial time ofset in 15 to 25 minutes.Figure 4. Time of Set TestingA needle, attached to the hydraulic loading device, penetrates themortar at regular intervals until it meets a resistance of 500 psi. Thetime at which the mortar resists 500 psi is its initial time of set.The time of set test results, presented in Figure 5 on the following page, show that all of thesamples took much longer to achieve an initial set than proprietary concrete patch materials.The Mn/DOT 3U18 control took nearly 3 hours to achieve an initial set. Both Denkaproducts at the higher dosage rate of 50.56 lb/yd 3 (30 kg/m 3 ) slightly lowered the initialtime of set of the Mn/DOT 3U18 patch material, but all of the other products increased theinitial time of set, with the lightweight fine aggregate products adding over 30 minutes to theset time. Thus, all of the samples surpassed the 15-minute minimum; and since there is nomaximum time of set constraint, none of the samples were eliminated from Phase II basedon the time of set test results.13
Figure 5. Time of Set Test Results250200221.75211.48204.34197.81 197.00 197.00 195.32179.29 179.00 177.00Initial Time of Set (min.)15010050Hydrocure LWFASolite LWFAKomponentType K CementDenka #20(42.14 lb/yd 3 or 25 kg/m 3 )Denka 100R(42.14 lb/yd 3 or 25 kg/m 3 )Tetraguard AS20Mn/DOT 3U18 ControlDenka 100R(50.56 lb/yd 3 or 30 kg/m 3 )Denka #20(50.56 lb/yd 3 or 30 kg/m 3 )0Modified Patch Material- 5.1.5 Change in Height -The change in height testing was conducted in accordance with ASTM C 1090, using onlythe mortar portion of the concrete samples (i.e. the coarse aggregate was sieved out). Thistest determines the volume change a mortar undergoes when it sets and hardens underconfinement. As shown in Figure 6 on the following page, the cylindrical mold confined themortar on the bottom and around the circumference, leaving only the top exposed. Toperform the test, the mold was placed into the micrometer bridge apparatus and secured. Thetop of the micrometer bridge had four holes where the depth gauge was inserted tomeasure the distance to the concrete surface, or to the glass plate for the initial readings.The thickness of the glass plate was added onto the initial readings and the initial averagedepth measurement was calculated (V i ). The average depth readings were calculated forthe 1-day, 3-day, and 7-day ages (V 1day , V 3day , V 7day ).14
Page 1 and 2: REPORT NUMBER: WI-01-04LABORATORY T
Page 3 and 4: LABORATORY TESTING OF PORTLAND CEME
Page 5 and 6: TABLE OF CONTENTSTechnical Report D
Page 7 and 8: Table 12. Concrete-to-Concrete Bond
Page 9 and 10: Table 1. Rapid Setting Concrete Pat
Page 11 and 12: addition to these techniques, which
Page 13 and 14: manufactured by Perstorp Polyols, I
Page 15 and 16: Performance results reported by the
Page 17 and 18: 4.4 Concrete Curing CompoundsTable
Page 19: - 5.1.3 Air Content -The concrete s
Page 23 and 24: The change in height test results a
Page 25 and 26: - 5.1.6 Compressive Strength -A set
Page 27 and 28: Mn/DOT 3U18 (CONTROL) Mn/DOT 3U18 w
Page 29 and 30: - 5.1.7 Phase I Test Results Summar
Page 31 and 32: - 5.2.2 Compressive Strength -Since
Page 33 and 34: 26Figure 12. Length Change Test Res
Page 35 and 36: The freeze/thaw test results, which
Page 37 and 38: any dirt or epoxy. Then, the specim
Page 39 and 40: - 5.2.6 Concrete-to-Concrete Bond S
Page 41 and 42: - 5.2.7 Phase II Test Results Summa
Page 43 and 44: Table 14. Cost ComparisonADDITIVE/A
Page 45 and 46: The patch material containing Denka
Page 47 and 48: feasible, all test sections will be
Page 49 and 50: Roberts, J. W. (April 23, 2002) Imp
Page 52 and 53: Mn/DOT 3U18 (Control)PHASE I: MIX D
Page 54 and 55: Mn/DOT 3U18 (Control) (Continued)PH
Page 56 and 57: Type K Cement (Continued)PHASE I: M
Page 58 and 59: KomponentPHASE I: MIX DESIGNS AND T
Page 60 and 61: Denka CSA #20 (42.14 lb/yd 3 or 25
Page 62 and 63: Denka CSA 100R (42.14 lb/yd 3 or 25
Page 64 and 65: Peramin SRA330 (Continued)PHASE I:
Page 66 and 67: Eclipse PlusPHASE I: MIX DESIGNS AN
Page 68 and 69: Eclipse Plus (Continued)PHASE I: MI
Page 70 and 71:
SolitePHASE I: MIX DESIGNS AND TEST
Page 72:
HydrocurePHASE I: MIX DESIGNS AND T
Page 76 and 77:
Mn/DOT 3U18 (Control)PHASE II: MIX
Page 78 and 79:
Type K CementPHASE II: MIX DESIGNS
Page 80 and 81:
KomponentPHASE II: MIX DESIGNS AND
Page 82 and 83:
Denka CSA #20 (50.56 lb/yd 3 or 30
Page 84 and 85:
Tetraguard AS20PHASE II: MIX DESIGN
Page 86:
APPENDIX C:ADDITIONAL TESTING OFSAT
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