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Utilization Of Pulverized Coal Ash

Last Update:2020-05-10 23:04:45

(2) The amount of admixture shall be determined by concrete trial mix test. The appropriate amount of air entraining agent can be controlled by the air content of the mixture at the mixer mouth. The anti freezing and anti salt freezing durability of the air entraining concrete of the actual pavement and bridge deck should be measured by the core drilling method specified in Appendix F.1 and F.2 of jtgf30-2003. Measurement position: pavement is 50 mm below the surface; deck is 30 mm below the surface; the larger average bubble spacing coefficient measured on the upper and lower surfaces should not exceed the specification.

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