6−42 b. Water-to-Cementitious Ratio. The maximum water to cementitious matter by weight ratio shall be 0.36.
c.J-Ring Test. During the trial batch, the mix shall be tested in accordance with ASTM C 1621. The difference between the slump flow and J-Ri ng shall be a maximum of 2 inches. This will ensure that the mix will not be in the ‘noticeable to extreme blocking’ range. If the difference is greater than 2 inches, the mix will be revised and retested prior to approval.
606.03 CONSTRUCTION METHODS. Construction methods shall conform to the applicable
requirements of Sections 600 and 800 of these Specifications except as modified below.
606.03.1 Sampling of SCC Admixtures. A sample of SCC admixture may be taken by a
Department representative. Sampling and approv al of SCC admixtures shall conform to Subsection 601.02.2 of these Specifications.
606.03.2 Placement and Finishing of SCC. The placement of SCC shall be in accordance with
Sections 600 and 800 of these Specifications where applicable, except that a minimal amount of concrete vibrating is necessary to prevent segregation of SCC.
606.03.4 Testing of SCC. The testing of SCC shall be in accordance with Subsections 601.03.7,
809.03.09 and 816.03.6 where applicable except the following:
Slump Flow Test. This test will be in lieu of the conventional slump test. The slump flow range shall be 23 in. + 3 in. measured diameter as per ASTM C1611.
606.04 METHOD OF MEASUREMENT. The SCC admixture required for “Self-Consolidating
Concrete” will not be measured for payment.
606.05 BASIS OF PAYMENT. No separate payment will be made for the addition of the SCC
admixture required for “Self-Consolidating Concrete.” Portland cement concrete with SCC admixture will be paid for under the appropriate item or items as listed in the Proposal. SECTION 607 MASS CONCRETE
607.01 DESCRIPTION. This specification covers the requirements for concrete used in mass
concrete elements. Concrete proportioned for mass concrete applications shall conform to the applicable requirements of PARTS 600 and 800 of these specifications, together with the additional provisions set forth below. 607.01.1 DEFINITIONS. Mass Concrete is defined as any elements so specified on the Plans and any other concrete pour where the ratio of the total volume to the surface area of the element equals or exceeds 0.6 and has a minimum dimension of 3 feet in any of the three planes. Calculation of the ratio shall be performed based on all dimensions measured in feet.
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 294–294 of 826.