earticle

영어

This study analyzed the technical property of ultra high strength concrete pursuant to changes in superplasticizers and SF replacement rates with a view to reviewing the plan to use a superplasticizer containing CASB as an additive for enhancing strength, whose results are summarized as follows: For the unhardened concrete, it could be seen that the use quantity of superplasticizers to meet the target slump flow increased when using CASB, and its setting time was promoted when adding CASB, but the increasing of SF replacement rates in CASB had no big effect on its setting time. When it comes to the property of hardened concrete, both of its compressive strength and tensile strength increased more when using CASB than when using N, its self contraction property decreased more in case of C-8 than in case of N, and its self contraction length change rate increased more in case of C-0 than in case of N.