2001 - PORTLAND CEMENT AND BLENDED HYDRAULIC CEMENT
2000-3 b. Maintaining P requalified Status. After a cement source has acquired prequalified status, the source
will be permitted to provide cement, by prequalified type, for use on KDOT projects provided the following conditions are complied with:
1.The quality-monitoring program meets the minimum sampling and testing frequencies established in ASTM C 183. This frequency may be altered somewhat with the approval of the Bureau Chief, Construction and Materials.
2.Submit monthly quality control reports for a ll prequalified cement types within 2 weeks after completion of the testing. Include a summary of the amount, composition and source of all process additions used under ASTM C 465 for each type of cement manufactured during the month. If none were used, report that fact also. (3) Utilize an approved laboratory to conduct quality control tests. The laboratory will be considered approved if it is properly equipped, has the capabilities to perform the tests required through this subsection and is routinely inspected through the CCRL program. Continued approval of the control laboratory and the source, by cement type, will depend on satisfactory comparison of its te st results with the results obtained by the Materials and Research Center on random verification samples of cement produced by the source. (4) The source has not changed materials, material sources, equipment, or processes since prequalification. 2001.5 BASIS OF ACCEPTANCE
a.Prequalification as specified in subsection 2001.4 .
b.A proper certification must accompan y each shipment of cement. Provide a copy of the bill of lading which includes the following certification statement and th e signature of a responsible source representative to the Field Engineer responsible for the project. Certification Statement The material herein has been sampled and test ed as prescribed by KDOT and complies with the applicable specification requirements fo r Type __ cement in ac cordance with the requirements of AASHTO . Date________________ Signed_______________________________ If a processing addition is used in the manufacture of the cement, include the following as a part of the certification statement: A processing addition, consisting of __% of ______________ and complying with the requirements of AASHTO M 85, has been used in the manufacture of this cement.
c.Identify the bills of lading with a project number, and denote the cement source, the type, and the quantity in the shipment. Retain this copy at the project or Contractor or distributor facility for the Engineer's representative’s records.
d.In the case of more than one project being supplie d by a contractor or distributor facility, the facility must provide the Engineer's representative either a copy of the bill of lading, or a signed listing of the bills of lading representing the cement, by type and so urce, incorporated into each project. Note: Verification samples will be obtained by KDOT pers onnel at the project site. Test results that do not comply with the specifications of this subsection may be co nsidered sufficient cause to rescind approval to furnish cement, by type, on a certification basis. 2002 - HYDRATED LIME
2000-4 Section 2002
HYDRATED LIME 2002.1 DESCRIPTION This specification covers hydrated lime suitable for use in mortar, portland cement concrete and the treatment of soil, soil-aggr egate and asphalt mixtures. 2002.2 REQUIREMENTS
a.General. Ship and store lime in moisture proof containers. Lime that has become partially set or caked will be rejected.
b.Hydrated Lime for Mortar and Concrete. P r o v i d e T y p e N , n o r m a l finishing hydrated lime that complies with ASTM C 206.
c.Hydrated Lime for Treating Soil, Soil-Aggregate and Asphalt Mixtures.
1.Hydrated lime for this purpose is any hydrated lime product consisting of hydrated lime and insoluble inert material and complying to the following: Available Lime Index as Calcium Hydroxide, %, min ...................................... 90
2.Hydrated lime for treating soil, soil-aggregate an d cold in-place recycle asphalt pavement may be manufactured at the jobsite by slaking pebble quicklime. Use equipment specifically manu factured for this purpose and approved by the Field En gineer. Provide a certification stating the purity of the load with each load of quicklime. Verification sampling of the pebble quicklime is required on the basis of 1 sample per 10 loads. Identify the sample as raw material for lime slaking, and submit a one quart sample with the certification for the load sampled to the MRC for comparison to the laboratory test.
3.Carbide lime may also be used for treating soil and soil-aggregate. Carbide lime is hydrated lime created as a by-product of acetylene gas manufacturing. It is a relatively pure form of hydrated lime and retains approximately 50% moisture indefinitely after the manufacturing process. Its consistency at delivery is that of a flowable to semi-flowable paste which can be spread evenly over the subgrade. Provide hauling equipment that can be sufficiently sealed to prevent loss of the material during transportation. During loading of the material, thoroughly mix the upper crust with the lower portions to provide a consistent product. The solids portion of the carbide li me material must comply with all chemical and physical requirements of subsection 2002.2c above, except as noted below. Determine the percent solids of the material by using a rapid method (e.g. microwave), approved by the Engineer. Represent the quantity of material by randomly selecting 1 test per 5 loads for pay, and for determining the rate of application. Provide a copy of each test report to the Engineer along with copies of the weigh tickets represented. If the material demonstrates consistent percent solids content, a reduced testing frequency may be requested according to Part V. Periodic unannounced check tests for moisture content will be conducted by the Engineer. Verification sampling of carbide lime is required on the basis of 1 sample per 10 loads. Place a one quart sample in a sealed, airtight container and forward it to the MRC for analysis. The source of carbide lime used on a project must be tested and approved prior to use. The Engineer will take a representative sample of the material and forward it to the MRC for analysis. The source may be approved without testing if the material is currently being used on another KDOT project and has already been tested and approved. If the available lime index falls below 90% during source qualification or verification testing, the first occurrence will be reported as non-comply (NCPL), and the Project Engineer will be notified. The DME may allow continued use of the source, and adjust the application an d pay rates based on the test results, or may require the Contractor to use lime in another form or from another source. All subsequent verification samples from the same source that fail the available lime index will be reported as pass, attention advised (PAAA).
4.Gypsum may be added, no more than 1% by weight, to assist in the pumpability of the lime slurry. If gypsum is used, it shall be incorporated into the process prior to slaking. Any addition of gypsum will be considered subsidiary to the Contract Documents. 2002 - HYDRATED LIME
2000-5 2002.3 Test Methods
Sample and test according to the following methods: Chemical Analysis ......................................................................................... AS TM C 25 Sampling, other than field .............................................................................. ASTM C 50 Sampling, Field .............................................................................................. KT-29 Physical Tests ................................................................................................. ASTM C 110 2002.4 PREQUALIFICATION None required, except for source qualification of carbide lime as outlined above. No prequalified lists are maintained for any hydrated lime products. 2002.5 BASIS OF ACCEPTANCE
a.Hydrated Lime.
1.Receipt and approval of a Type D certification as specified in DIVISION 2600 .
b.Pebble Quicklime (for slaking).
1.Receipt and approval of the certified lim e purity for each lo ad of quicklime.
2.Visual inspection of the final product in the field.
c.Carbide Lime (for use as hydrated lime).
1.Approval of the source as outlined in subsection 2002.2c(3) .
2.Receipt and approval of a Type C certification as specified in DIVISION 2600 .
3.Visual inspection of the material in the field.
4.Adjustments for moisture and available lime index as outlined in subsection 2002.2c(3) . 2003 - PEBBLE QUICKLIME
2000-6 Section 2003
PEBBLE QUICKLIME 2003.1 DESCRIPTION This specification covers pebble quicklime suitable fo r treatment of soil and soil-aggregate mixtures for purposes of stabilization. Pebble quic klime is a calcined material, the major part of which is calcium oxide or calcium oxide in natural association with a lesser amount of magnesium oxide capable of slaking with water. This specification applies specifically to lime made from calcium type limestone. 2003.2 REQUIREMENTS Provide material that complies with the requirements of AASHTO M 216. When pebble quicklime is used as lime slurry, gypsum may be added (no more than 1% by weight) to assist in pumping the material. If Gypsum is used, incorporate into the process prior to slaking. Any addition of gypsum is considered subsidiary to the Contract Documents. 2003.3 TEST METHODS Test according to the applicable provis ions of ASTM C 25 and ASTM C 110. 2003.4 PREQUALIFICATION Not Required. 2003.5 BASIS OF ACCEPTANCE Receipt and approval of a Type D certification as specified in DIVISION 2600 . Satisfactory performance in the field. 2004 - FLY ASH FOR USE IN CONCRETE
2000-7 Section 2004
FLY ASH FOR USE IN CONCRETE 2004.1 DESCRIPTION This specification covers fly ash that may be used as a partial replacement for portland cement and blended hydraulic cement in concrete, when allowed by other parts of the Contract Documents. 2004.2 REQUIREMENTS
a.Fly ash sources must be prequalified.
b.Provide material that complies with the chemical and physical requirements of ASTM C 618, Class C or Class F, except the loss on ignition may not exceed 3.0%. The supplementary optional phy sical requirements apply, except that with the “Effectiveness in Controlling Alkali-Si lica Reaction,” the expansion of the test mixture as a percentage of the low-alkali cement c ontrol at 14 days may not exceed 120%. Conduct this testing with 15% fly ash and a Type I/II cement with an alkali content between 0.40% and 0.44%.
c.The quality-monitoring program must comply with the minimum sampling and testing frequencies established in ASTM C 311. This frequency may be altered slightly with the approval of the Bureau Chief of Construction and Materials, provided the monitoring intent of ASTM C 311 is met or exceeded.
d.There are other requirements that must be met for the fly ash/cement mixture in addition to those cited above for qualification of the fly ash al one. Additional testing will be required for specific applications. Consult the Contract Documents before proposing the use of fly ash in concrete. 2004.3 TEST METHODS Sample and test fly ash according to ASTM C 311. Field sample according to Part V, KT-29. 2004.4 PREQUALIFICATION
a.Becoming Prequalified.
1.Submit the following to the Engineer of Tests:
a.A copy of the quality control plan for the source. The plan should include information on where and how sampling is performed, frequency, a nd what standards (ASTM, etc.) are used.
b.A 2-gallon sample of fly ash representative of material intended for use on KDOT projects.
c.Certified test results of fly ash produced by the power plant during the 6 months immediately before the prequalification request. Show the high, low and average values or statistical analysis for each month. (d) Written information regarding the sources of co al utilized in the production of fly ash for the preceding 6 months, and that anticipated for the future.
e.Written evidence of the latest Cement and C oncrete Reference Laboratory (CCRL) inspection of the laboratory performing the fly ash testing.
2.The Engineer of Tests will test the submitted sample and review the information submitted by the source, for compliance with the Contract Documents. The Bureau Chief of Construction and Materials will notify the source of the results in writing. Power plants complying with all requirements will be placed on a list of prequalified fly ash sources maintained by the Bureau of Construction and Materials.
3.Prequalification of the source of fly ash will be based on material produced when the power plant is using specific materials, equipment and processe s. Any change in materials, materials sources, equipment or processes voids the source prequalification, and a new prequalification will be required.
b.Maintaining Prequalified Status. After a fly ash source has gained prequalified status, the source will be permitted to furnish fly ash for use on KDOT proj ects provided the following conditions are met.
1.Submit quality monitoring test reports monthly for all monitoring samples. 2004 - FLY ASH FOR USE IN CONCRETE
2000-8 (2) Use an approved laborator y to conduct quality control tests. The la boratory will be considered approved if
it is properly equipped, has the capabilities to perform the tests required by the Contract Documents and is regularly inspected by the CCRL program. Continued approval of the control laboratory and the source will depend on satisfactory comparison of its test results with the results obtained by the Materials and Research Center.
3.The source has not changed materials, material s ources, equipment or processes since prequalification. 2004.5 BASIS OF ACCEPTANCE
a.Prequalification as specified in subsection 2004.4 .
b.A proper certification must accompany each shipment of fly ash. Provide to the Fi eld Engineer 2 copies of the bill of lading which includes the following certification statement and the signature of a responsible company representative. Certification Statement The material herein has been sampled and tested as prescribed by KDOT and complies with the applicable specification requirements for Class ___ fly ash. Date________________ Signed_______________________________ Identify the bills of lading with a project number, and denote the fly ash source, the type and the quantity in the shipment. Retain these copies at the project or ready mix plant for the Fi eld Engineer's records. In the case of more than one project being supplied by a ready mix plant, the plant must provide the Field Engineer with a copy of the bill of lading, or a signed listing of the bills of lading representing the fly ash incorporated in each project. Note: Verification samples will be obtained by KDOT pe rsonnel at the project site. Test results which do not comply with the Contract Documents may be considered sufficient cause to rescind approval to furnish fly ash on a certification basis.
Source: Kansas Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 872–877 of 978.