混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
11期
30-34
,共5页
盐雾腐蚀%海水侵蚀%矿渣掺量%混凝土强度%损伤
鹽霧腐蝕%海水侵蝕%礦渣摻量%混凝土彊度%損傷
염무부식%해수침식%광사참량%혼응토강도%손상
Salt spray corrosion%Seawater attack%Slag content%Concrete strength%Damage
模拟海洋盐雾区和水下区，采用非破损检测方法测定了混凝土在盐雾腐蚀和海水侵蚀中的相对动弹性模量和质量损失率，研究了混凝土的经时劣化损伤演变规律、特点及损伤程度。同时比较了盐雾环境和海水环境对混凝土损伤劣化的共性和差别。最后借助损伤度概念，探讨了矿渣掺量和混凝土强度对混凝土损伤度的影响。结果表明，相对动弹性模量经时变化过程表现为4个阶段，质量损失变化过程包括2个阶段。盐雾腐蚀造成的混凝土损伤大于海水侵蚀；混凝土的损伤度随着矿渣掺量的增加而增大，同时混凝土强度亦对损伤度起着重要影响。
模擬海洋鹽霧區和水下區，採用非破損檢測方法測定瞭混凝土在鹽霧腐蝕和海水侵蝕中的相對動彈性模量和質量損失率，研究瞭混凝土的經時劣化損傷縯變規律、特點及損傷程度。同時比較瞭鹽霧環境和海水環境對混凝土損傷劣化的共性和差彆。最後藉助損傷度概唸，探討瞭礦渣摻量和混凝土彊度對混凝土損傷度的影響。結果錶明，相對動彈性模量經時變化過程錶現為4箇階段，質量損失變化過程包括2箇階段。鹽霧腐蝕造成的混凝土損傷大于海水侵蝕；混凝土的損傷度隨著礦渣摻量的增加而增大，同時混凝土彊度亦對損傷度起著重要影響。
모의해양염무구화수하구，채용비파손검측방법측정료혼응토재염무부식화해수침식중적상대동탄성모량화질량손실솔，연구료혼응토적경시열화손상연변규률、특점급손상정도。동시비교료염무배경화해수배경대혼응토손상열화적공성화차별。최후차조손상도개념，탐토료광사참량화혼응토강도대혼응토손상도적영향。결과표명，상대동탄성모량경시변화과정표현위4개계단，질량손실변화과정포괄2개계단。염무부식조성적혼응토손상대우해수침식；혼응토적손상도수착광사참량적증가이증대，동시혼응토강도역대손상도기착중요영향。
Simulating marine salt spray zone and submerged zone in laboratory, the relative dynamic modulus of elas-ticity and mass loss rate of concrete subjected to salt spray corrosion and seawater attack are determined by the method of non-damage detection, the damage evolutional law, characters and damage degree of concrete are investigated. Meanwhile, the deterioration of concrete subjected to salt spray and seawater environment is analyzed and compared. At last, based on the concept of damage degree, the influences of slag content and concrete strength on damage degree of concrete are deeply discussed. The results show that the change tendency of the relative dynamic modulus of elasticity exhibits 4 stages, and mass loss change represents 2 stages. The deterioration of salt spray corrosion is more serious than that of seawater at-tack, the damage degree of concrete enlarges with the increasing of slag content, meanwhile, concrete strength has an im-portant impact on it.
