The Feasibility Research of Hydrophobic Concrete Waterproofing Agent

• Main Authors: Chien-Hao Li, 李健豪
• Other Authors: 林正平
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/stnnkz

碩士 === 國立臺北科技大學 === 土木工程系土木與防災碩士班 === 105 === Taiwan is located in subtropical area where is wet and rainy, and most buildings in Taiwan are made of reinforce concrete, Moisture will make concrete leak and cause efflorescence. Leaking has taken over 14% of estate transaction disputes, so that researches and applications of different waterproof materials is an important issue. There are many studies on waterproof engineering, while most of those are about physical blocking or injecting waterproof materials into concrete’s damaged area to stop the water’s infiltration.However, some impacts like irradiating UV or earthquake would decrease the function of waterproofing, so these ways couldn’t improve concrete leaking and infiltration problems thoroughly. This study collected related literature about often used waterproof materials in Taiwan,and listed the ways of applications,advantages and disadvantages to understand the overview of waterproof engineering in Taiwan.Then, by experiencing the waterproof agent from America, we will know if it conforms the standards of Chinese National Standards 3763. The results showed the composite grouts’ initial setting time fell between 3~3.5 hours, the final setting time fell between 5~5.5 hours; the composite grouts didn’t shrink, warpage, or occur expansion cracking after the stability test. The experimental group and control groups’ 350kgf/cm2 and 280kgf/cm2 concrete’s average compression ratio have reached 0.99 and 1.00; the mortor’s average compression ratio has reached 0.97;the experimental groups and control groups’ water absorption ratio were lower than 0.5 after been reviewed; the water permeability of the concrete and mortor’s permeability average ratio are both lower than 0.5. Those results showed the waterproof agent conforms the standards of Chinese National Standards 3763, and it is feasible to apply on concrete and mortor.