Regenerated concrete shrinkage prediction method based on relative humidity

• Main Authors: ZHOU ZHEN, QIN JIA, MA HUANCHI, GENG YUE, ZHANG HUAN, WANG YUYIN, CHEN XUEPENG, YANG HUA, GAO WENCHANG
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a recycled concrete shrinkage prediction method based on relative humidity, and belongs to the technical field of concrete. Comprising the following steps: determining basic parameters of recycled aggregate and recycled concrete, calculating an equivalent water cement ratio of the recycled concrete, calculating hydration reaction, calculating humidity diffusion, calculating recycled aggregate release water, correcting relative humidity, calculating bulk modulus under a standard curing condition, quantifying distribution of the bulk modulus along with depth, and calculating one-dimensional free shrinkage. And deformation coordination calculation and the like. According to the model, a recycled concrete shrinkage prediction method is established from a shrinkage mechanism, the influence of the recycled aggregate content, the water absorption rate, the water content and the mixing method on the equivalent water cement ratio of the recycled concrete is considered in the model, and the inter