摘要
HCSA是一种以氧化钙为主要膨胀源、石膏和无水硫铝酸钙为辅助膨胀源的双膨胀源高性能混凝土剂。HCSA具有膨胀能大(水中7d限制膨胀率高达0.17%)、膨胀速率快、绝湿膨胀能高、膨胀期短、干燥收缩小,且能激发掺合料活性等优点。HCSA能有效补偿混凝土的干缩和冷缩,提高混凝土抗裂防渗性能,成功用于混凝土结构自防水、超长结构施工和大体积体混凝土防裂。
HCSA is a double expansive sources high performance expansive agent for concrete. Calcium oxide is the major expansive sources, and gypsum and calcium sulphoaluminate are the assistant expansive sources. HCSA has the advantage of high expansion(restrained expansion rate is 0.17% in water), fast expansion speed, anhydrous expansion,short expansion period, small drying shrinkage, and can activate the activity of mineral admixture. HCSA can effectively compensate drying shrinkage and thermal shrinkage, thus improve crack resistance and anti-seepage of concrete. HCSA has been successfully used in concrete structural self-waterproofing, jointless constructing of the excessive-length construction, and cracks prevention of mass concrete.
出处
《膨胀剂与膨胀混凝土》
2016年第1期1-5,16,共6页
Expansive Agents & Expansive Concrete
关键词
双膨胀源
混凝土膨胀剂
绝湿膨胀
补偿收缩混凝土
限制膨胀率
double expansive sources
expansive agent for concrete
anhydrous expansion
shrinkage-compensating concrete
restrained expansion rate
