塑性混凝土防渗墙耐久性的研究和评估

塑性混凝土防渗墙由于其弹性模量较低，能适应砂卵石地基的变形，有较好的抗裂性和抗渗性，因此作为一种新型的防渗墙结构已在工程中得到了初步的推广应用．但是对于塑性混凝土这种新型墙体材料的耐久性问题，国内外尚未进行深入的研究．笔者通过对塑性混凝土宏观的溶蚀试验（CaO溶出过程试验）以及溶蚀前后微观的差热分析、扫描电镜和能谱分析，对塑性混凝土在有水渗漏下的耐久性问题作了深入的研究，并在此基础上，对塑性混凝土防渗墙和普通混凝土防渗墙的耐久性和使用年限作了相应的计算和评估．

The Study and Appreciation on the Durability of Plastic Concrete Cut-off Wall

Due to its lower elastic modulus, better adaptability to the de formation of sandy gravelfoundation ) higher cracking and permeability resistance, plastic concrete cut-off wall has been initially used in projects as a new structure of cut-off wall, but a thorough study of the durability of plasticconcrete has not been made. Through the study and analysis of plastic concrete by DTA (differentialthermal analysis) and SEM (scanning electron microscope) before and after leaching corrosion, thedurability of plastic concrete in the leaching corrosion has been studied and the calculation and appreciation of the durability and service life of plastic concrete cut-off wall have been made.