منابع مشابه
Concrete Mixing Methods and Concrete Mixers: State of the Art
As for all materials, the performance of concrete is determined by its microstructure. Its microstructure is determined by its composition, its curing conditions, and also by the mixing method and mixer conditions used to process the concrete. This paper gives an overview of the various types of mixing methods and concrete mixers commercially available used by the concrete industry. There are t...
متن کاملusing treated domestic wastewater in concrete mixing
this document provides feasibility study of using treated domestic wastewater in concrete mixing. today, concrete is one of the most important construction materials. from first time that concert was used in construction materials, always the drinkable water used for concrete mixing water. domestic wastewater contains about 400 ppm of organic materials. after the treatment of wastewater, concen...
متن کاملMeasurement of Workability of Fresh Concrete Using a Mixing Truck
The main objective of this study is to evaluate the workability of fresh portland cement concrete while it is still in the mixing truck by determining fundamental rheological parameters (plastic viscosity and yield stress). Nine concrete mixtures with different values of yield stress and plastic viscosity were tested in a concrete truck. The measurements made with the truck were based on the ty...
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Through the research, design datas are provided for the enhancing product performance and competitiveness. In the paper, based on problems that exist in the construction of concrete mixing station, actual conditions of Tengzhou city and research results in China United cement plant, concrete mixing station’s overall structure is designed. And the structure’s harmonic response and dynamic proper...
متن کاملPossibility of Sea Water as Mixing Water in Concrete
In the near future, fresh water will be very difficult to get and scarce. It is said that in 2025 half of the mankind will live in the areas where fresh water is not enough. Also, UN and WMO are predicting 5 billion people will be in short of even drinking water. Also, in the present, there are some areas where sea water or chloride contained sand are used as mixing water with or without intens...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1906
ISSN: 0036-8733
DOI: 10.1038/scientificamerican05261906-25413bsupp