摘要
介绍了广东惠来电厂超超临界4号汽轮发电机组(1 000码MW)基座底板大体积混凝土施工技术。分析了混凝土采用后期60 d强度替代28 d设计强度以及选用"三掺"技术进行配合比设计,掺人矿渣粉降低水化热,提高混凝土强度的机理。结合现场综合温控技术的合理应用,有效地控制了大体量混凝土水泥水化热所产生的温度应力及收缩变形导致的裂缝。这一技术在燃煤电厂的设计与施工中的有广阔的应用前景。
This article describes the benefits to Guangdong, No 4 USC Power Plant Turbine （ 1000 MW） base mass concrete construction technology. Analysis of the late 60 days strength of concrete using alternative design strength of 28 days and the selection of the ＂three mixed＂ mix design technology, incorporation of slag powder reduced heat of hydration, improve the mechanism of concrete strength. Comprehensive field with the reasonable application of temperature control, effective control of the general amount of heat generated by cement hydration of concrete temperature and shrinkage stresses caused by cracks. This technology in the design and construction of coal-fired power plant has broad application in the future.
出处
《建筑技术开发》
2011年第9期38-40,89,共4页
Building Technology Development
关键词
汽机基座底板
大体积混凝土
“三掺”技术
综合温控
turbine base floor
mass concrete
＂three doping＂ technology
comprehensive temperature
