Influence of wind speed and sunlight on recycled aggregate concrete strength with polycarboxylate superplasticizer

Recently, natural aggregate mining has been decreasing year by year, and shortages of aggregate required for construction are becoming increasingly serious. The government is trying to find alternatives to the use of aggregate and construction waste through the Law for Promoting Recycling of Construction Waste. Among provisions, recycling aggregate generated from waste concrete is considered an important alternative to solve aggregate shortage. There are various advantages to using recycled aggregate, but there is no standard for quality control and climate factors and recycled aggregate is not actively utilized. In this study, by improving the quality of recycled aggregate and setting the climate factors, we have developed recycled aggregate concrete that can be used in the actual field. For this purpose, concrete specimens were fabricated by applying a high performance water reducing agent to the recycled aggregate concrete, and the strength characteristics of the concrete were analyzed by setting various curing conditions such as wind speed and sunlight. As a result, it is considered that if the probabilistic performance based evaluation is carried out, the problems of recycled aggregate will be improved/predicted. Also, the workability and quality ensure that a large amount of construction waste can be recycled.