Water Absorbtion Controlling Type Surface Treatment Method for Quality Enhancement of Recycled Aggregate

Title & Authors
Water Absorbtion Controlling Type Surface Treatment Method for Quality Enhancement of Recycled Aggregate
Choi, Heebok;

Abstract
The research, in order to enhance the quality of recycled aggregate, was carried out the quality characteristics test of the recycled aggregates by applying the four kinds of surface treatment using a colloidal suspension of approximately 5nm~60nm particle size with the alkalinity of pH 10.2. The quality tests of recycled aggregate have been processed by specific gravity, water absorption, porosity, surface properties, and the compression and tensile tests. The colloidal suspension was coated effectively the surface of the old cement mortars of recycled aggregate with a constant thickness by colloidal suspension is being applied to the recycled aggregate surface under constant pressure of 100kpa and then it was dried in at $\small{60^{\circ}C}$. The surface treatment method by the Method C out of 4 kinds of surface treatment improved effectively the quality of the recycled aggregates, whereby it obtained the best compressive strength and tensile strength of the recycled aggregate concrete.
Keywords
recycled aggregates;surface coating;specific gravity;water absorption;porosity;
Language
Korean
Cited by
1.
Optimum Carbonation Reforming Period of Recycled Aggregate Based on the Microscopic Carbonation Conduct, Journal of the Korea Concrete Institute, 2016, 28, 3, 329
2.
Performance Evaluation of Recycled Aggregate Concrete Made of Recycled Aggregate Modified by Carbonation, Journal of the Korea Concrete Institute, 2016, 28, 4, 445
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