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<p>This passage presents alternative methods for the processing of concrete waste produced by the <a href="http://www.dwconstructionmachine.com/">concrete mixer</a> machine. The mechanical stresses needed for the embrittlement of the mortar matrix and further selective crushing of concrete were generated by either electric impulses or microwaves heating. Tests were carried out on lab-made concrete samples representative of concrete waste from <a href="http://www.dwdieselmixer.com/pro/p8.html">concrete mixer machine</a> and on concrete waste collected on a French demolition site. The results obtained so far show that both techniques can be used to weaken concrete samples and to enhance aggregate selective liberation (that is the production of cement pastefree aggregates) during crushing and grinding. Electric pulses treatment seems to appear more efficient <a href="http://www.concretemixerpump.com/">concrete pump</a>ing, more robust and less energy consuming than microwave treatment but it can only be applied on samples in water leading to a major drawback for recycling aggregates or cement paste in the cement production process.</p>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:concrete mixer machine,<a href="http://www.dwmixers.com/">concrete <a href="http://www.dwmixers.com/products/concrete-batching-plant/portable-concrete-batching-plant.html">batching plant</a></a>,We will provide you with the best product and service. <p> <p>A set of operating conditions were defined to study the influence of each techniques on concrete weakening. Two operating conditions will be displayed in the following texts which were defined for the electric pulses weakening technique and four operating conditions for the concrete <a href="http://www.dwmixers.com/products/concrete-batching-plant/mobile-concrete-batching-plant.html">batch plant</a>.</p>