The use of nano silica and the effect of rubber powder and rubber shards on compressive strength of ۷-day concrete

The presence of used tistics as one of the environmental polluters has been considered in recent decades. It is not possible to dispose of used tires in the environment because the rubber is decomposed at a very slow rate and produces a lot of pollution, apart from the environmental problems caused by the lack of degradation, provide a suitable environment for mosquito growth. Therefore, the use of these used tires is considered as a requirement. And your position was evaluated in ۷ days. Water to cement ratio was constant in the designs and rubber crumbs were used to ۴.۷۵-۹.۵ and rubber powder ۰.۶ mm. In this paper, the amount of rubber was used as weight percentage of cement ۵%, ۱۰%, ۱۵% and nano silica was added to the mixtures with rubber by ۲% and ۳%.

Keywords:

Nano silica , rubber powder , rubber shards , concrete