This Engineer Technical Letter (ETL) discusses the special problem areas and concerns related to RCC construction in order to assure that the concrete properties required are ultimately realized in the completed structure. A quality RCC product requires a coordinated effort between the structural designer, the materials engineer, the materials laboratory, and those responsible for field quality...

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recently, particular attention has been paid to the stepped spillways due to the increasing effect of energy dissipation and the reduction of cavitations risks with the development of roller compacted concrete (rcc) technique. flow regimes on the spillways divide into three groups, namely skimming, jet and transition flow. compared to the numerical methods, the majority of performed studies in ...

The most important property of a concrete mix is workability, i.e., the ability mixture to spread and take given form while maintaining solidity uniformity. main influence on workability exerted by water consumption and, in part, cement consumption. Workability determined mobility at time filling mold plasticity, deform without breaking continuity. In process vibrating pressing placed mold, tot...

RCC using hematite as an aggregate has interesting characteristics for use in massive structures or radiation shielding. In Brazil, there is a considerable amount of ore tailings without practical use, which makes this material environmental problem and matter public safety. Thus, the search alternatives to these priority concern. An containment dam with was constructed protect basin Barao de C...

the current research intends to study the possibility of producing fiber recycled self-compacting concrete (frscc) using demolitions as a coarse aggregate (crushed red brick and crushed ceramic). steel fibers were used in recycled self-compacting concrete (rscc) to improve fresh and hardened properties of this type of concrete. thirty nine concrete mixes were prepared to achieve the aim propose...

One-third of the total waste generated in world is construction and demolition waste. Reducing life cycle building materials includes increasing their recycling reuse by using recycled aggregates. By preventing, need to open new aggregate quarries reducing amount dumped into landfills, use concrete drum compacted protects environment. Four samples PRCC were prepared for testing (compressive str...