Self-Compacting Concrete and Concreting Technology for Foundation Block Using 9000 Cubic Meters of Concrete
نویسندگان
چکیده
. The paper presents the results of development and implementation technology self-compacting heavy structural concrete concreting with its use largest foundation slab in Belarus (concrete volume ~9100 m3) a high-rise building at facility “Construction multifunctional complex Minsk within boundaries Filimonova Street – Avenue Nezavisimosty Makayonka Street”. research are shown, which ensured production class C35/45 water resistance up to W20 (with required W12 according project) from mixtures maximum cone expansion PK6 (RK6) grade for three zones different degree reinforcement: lower, middle upper, total structure height 3.5 m plan dimensions ~(83´34) m. continuous (seamless) has been developed implemented, made it possible lay m3 into without defects 42 hours operation, system technological measures that prevented temperature cracking concrete. homogeneity physical mechanical properties concrete, confirmed by control tests, is due uniform supply mixture (from six pumps same time) layers 200–300 mm high distance between points about 5–6 vertical arrangement “trunks” pipes during delivery each point, as well fact time feeding next was significantly less than setting previously laid speed £0.1 m/h). Standardized original test methods mixtures, hardening kinetics hardened have used development, project. Control tests characteristics carried out BNTU together authorized organizations controlling progress construction, independent (third-party) organizations, their compliance design requirements.
منابع مشابه
Self-Compacting Concrete - Procedure for Mix Design
Self-compacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration. Self-compacting concrete development must ensure a good balance between deformability and stability. Also, compactibility is affected by the characteristics of materials and the mix proportions; it becomes necessary to evolve a procedure for mix design of SCC. The paper...
متن کاملProperties of Self-compacting Concrete – an Overview
Self-compacting concrete can be defined as the concrete which requires no vibrations and can flow around obstructions, encloses the reinforcement and fills up the formwork completely under its self weight. Over the last ten years, significant amount of work has been carried out on self-compacting concrete all over the world. In countries like Japan, Sweden, Thailand, UK etc., the knowledge of S...
متن کاملUltra High Performance Self Compacting Concrete
Experiences in the development of Ultra High Performance Concrete found a very high flowability in concrete with low water powder ratio. Because of the high viscosity of the cement paste, compaction was necessary. To improve the compaction characteristics of the concrete the idea of adding coarse aggregate was developed. The first tests showed a good workability of the fresh concrete and a good...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nauka i Tehnika
سال: 2021
ISSN: ['2227-1031', '2414-0392']
DOI: https://doi.org/10.21122/2227-1031-2021-20-4-329-337