DateLaboratory Testing of Portland Cement Concrete Patch Material ...

More documents

Recommendations

Info

Figure 3. Mn/DOT’s Concrete Mix Numbering System3 U 1 8This is the type ofconcrete. It isdetermined by whetheror not an air void systemis desired in the cementpaste.This is thegrade (designstrength) ofthe concrete.This number isthe maximumslump in 25mm (1 inch)increments.This num ber representsthe gradation range (thenumber that defines thecoarse aggregatedesignation).4.2 Mn/DOT 3U18 Patch Material (Control Mix For This Study)Mn/DOT's 3U18 concrete mix design was revised for this study by substituting Type IIIcement for Type I cement to create a more rapid setting concrete. Also, since differentadmixtures can have varying effects on the slump of the patch material, the modifiedMn/DOT 3U18 patch materials were not held to the same slump requirements. Instead, itwas determined that each modified patch material would be mixed with the same w/c. TheMn/DOT 3U18 control patch material was mixed first and it was found that the lowest watercontent the patch material could be mixed at and still be workable, to provide goodconsolidation around the dowel bar, yielded a w/c of 0.395. This produced a slump of 2¼inches for the Mn/DOT 3U18 control. All of the modified patch materials, with theexception of the sample containing Type K cement, were mixed with a w/c of 0.395. On theadvice of the manufacturer, the sample containing Type K cement was mixed with a w/c of0.42, the lowest w/c at which the expansive properties of the Type K cement can beeffective.4.3 Modified Mn/DOT 3U18 Patch MaterialsTable 2 on the following page shows the 12 patch materials evaluated in this study. TheMn/DOT 3U18 patch material (Sample 1) was used as the control for comparisons with themodified Mn/DOT 3U18 patch materials (Samples 2-12). See Appendixes A and B for adetailed description of the patch material mix designs.9
4.4 Concrete Curing CompoundsTable 2 also shows the two concrete curing compounds evaluated in this study. TheSealtight 1600 curing compound was used as the control for comparisons with the Sealtight2255 curing compound.Table 2. Products Evaluated in This StudySAMPLE MODIFIED PATCH SHRINKAGE REDUCTIONNUMBER MATERIAL DESCRIPTIONS METHOD1 Mn/DOT 3U18 (CONTROL) None2 Mn/DOT 3U18 w/ Type K Cement Expansive Cement3 Mn/DOT 3U18 w/ Komponent Expansive Additive4 Mn/DOT 3U18 w/ Denka #20 (50.56 lb/yd 3 or 30 kg/m 3 ) Expansive Additive5 Mn/DOT 3U18 w/ Denka #20 (42.14 lb/yd 3 or 25 kg/m 3 ) Expansive Additive6 Mn/DOT 3U18 w/ Denka 100R (50.56 lb/yd 3 or 30 kg/m 3 ) Expansive Additive7 Mn/DOT 3U18 w/ Denka 100R (42.14 lb/yd 3 or 25 kg/m 3 ) Expansive Additive8 Mn/DOT 3U18 w/ Peramin SRA330 Shrinkage Reducing Admixture9 Mn/DOT 3U18 w/ Eclipse Plus Shrinkage Reducing Admixture10 Mn/DOT 3U18 w/ Tetraguard AS20 Shrinkage Reducing Admixture11 Mn/DOT 3U18 w/ Solite (LWFA) Internal Curing12 Mn/DOT 3U18 w/ Hydrocure (LWFA) Internal CuringCURING COMPOUND DESCRIPTIONSSealtight 1600 - White (CONTROL)Sealtight 2255 - WhiteTYPE OF CONCRETECURING COMPOUNDWater-Base, Wax-BasePoly-Alphamethylstyrene5.0 LABORATORY TESTINGThe laboratory testing process was broken down into three phases for this study. Phase Itesting was comprised of tests with short durations and was used to eliminate poorperforming materials from the more in-depth testing of Phase II. Slump, unit weight, andair content were measured in both phases for informational purposes. Phase I testingincluded time of set, change in height, and compressive strength. The mix designs thatperformed acceptably in Phase I were mixed again and tested for compressive strength,length change, freeze/thaw durability, permeability, and concrete-to-concrete bondstrength in Phase II. The curing compounds were evaluated in Phase III, using the waterretention test.10
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: Performance results reported by the
Page 19 and 20: - 5.1.3 Air Content -The concrete s
Page 21 and 22: Figure 5. Time of Set Test Results2
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
show all

DateLaboratory Testing of Portland Cement Concrete Patch Material ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?