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| Materials and solutions to concrete batching plant; Materials and solutions to concrete batching plant | |
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| Tweet Topic Started: 23 Apr 2015, 06:12 PM (63 Views) | |
| joanna | 23 Apr 2015, 06:12 PM Post #1 |
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1. Concrete samples Two types of concrete samples were used in this study: – Three tons of lab-made concrete samples representative of concrete waste from revolving drum. Concrete was prepared using a mixture of alluvial aggregates from the Seine valley with 37.4% of sand and 59.4% of gravels mobile concrete mixer forced type concrete mixer, the size distribution of these aggregates being given in Table 1, a water-to-cement mass ratio of 0.15, an aggregate-to-cement ratio (A/C) of 400% by volume and was cast in slab. – Concrete waste collected on a French demolition site. Maximum size of the concrete samples was taken to 50 mm of mean diameter essentially because of size constraint of the vessel dedicated to electrohydraulic treatment experiments. The same size of concrete samples has also been chosen for microwave embrittlement so that to compare the ef?ciencies of both technics on the same basis. Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:Mobile Hollow Brick Making Machine,block making machine,concrete mixers,etc. We will provide you with the best product and service. 2. Experimental set-up and operation Two technologies were evaluated in this study. The ?rst one was based on high voltage discharge pulses and was conducted with a selFrag Lab machine, manufactured by selFrag AG. The machine selFrag Lab usually treat minerals or other samples in the 1 kg range. Samples are loaded in a portable process vessel ?lled with water. Several settings can be chosen such as number of pulses twin shaft forced concrete mixer, discharge voltage (controls the energy per pulse) and elec- trode gap of discharge. When the predetermined voltage is reached, the energy of the pulse generator is discharged from the electrode through the solid sample to the grounded bottom (counter electrode) of the process vessel. |
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8:47 AM Jul 11