This paper presents the results as follows , the compressive strength of minus - temperature calcium - enriched fly ash concrete decreases with the increase of calcium - enriched fly ash when the w / b ratios are the same 试验结果表明:在本课题研究范围内,当保持增钙粉煤灰混凝土的水胶比w / b不变时,负温增钙粉煤灰混凝土的抗压强度随增钙粉煤灰取代水泥量的增加而降低。
Comparing with the reference concrete , the resistance of freezing - thawing cycles and chloride diffusivity in calcium - enriched fly ash concrete increase , because the pore structures and interface structure are optimized , so the durability of calcium - enriched fly ash concrete is perfect 相对于基准混凝土,增钙粉煤灰混凝土的抗冻性和抗氯离子渗透性能均有所提升,这主要是由于增钙粉煤灰改善了混凝土的孔结构和界面结构,从而使其具有更为优异的耐久性。
The elas tic modulus , ascending segment of stress - strain relation of normal concrete , two kinds of concrete containing respectively grade fly ash and grade fly ash from huaneng fuzhou power plant is tested . the analysis results show that the relation between elast ic modulus and axes compressive strength of fly ash concrete is the same as normal concrete 本文试验研究了普通混凝土、不同品质粉煤灰混凝土的弹性模量、应力应变上升段及其他力学性能。结果表明：粉煤灰混凝土与普通混凝土的弹性模量随轴心抗压强度的变化是一致的；强度达到一定的等级后，相近强度等级的粉煤灰混凝土和普通混凝土，前者的弹性模量超过后者的弹性模量。
[ the summary ] every performance of this text to high - performance concrete of fly ash has done detailed research , and to the concrete respectively to person who mix of fly ash kinds of influence of performance and fly ash concrete some questions that should notice carry on analysis and discussion in not constructing 摘要本文对粉煤灰高性能混凝土的各项性能作了详细的研究，并针对粉煤灰的掺入量对混凝土各种性能的影响以及粉煤灰混凝土在施工中应注意的一些问题进行了分析和探讨。
Originally from green concrete and concreting in minus - temperature , the critical strength of frozen injury of minus - temperature calcium - enriched fly ash concrete and the rule of strength development are studied in this paper . through the test of resistance of freezing - thawing cycles and chloride diffusivity , the influence of curing system and calcium - enriched fly ash on the performance of concrete are studied ; and through the modern methods ( xrd , sem , and so on ) , the hydration products , pore structures and microstructure are studied 本文既着眼于绿色混凝土,又致力于混凝土的负温施工,研究了增钙粉煤灰混凝土的抗冻临界强度及其负温抗压强度发展规律;通过快冻试验和氯离子渗透试验,研究养护制度和增钙粉煤灰掺合料对混凝土耐久性能的影响;并通过光学显微镜法、扫描电镜和xrd等现代分析方法,研究负温增钙粉煤灰混凝土的水化产物、孔结构和显微结构。
In charge of one of major subjects of the national eighth five - year plan , i . e . " study on shotcreting techniques of polyacrylate emulsion cement mortar for impermeability coating of pu ding rcc dam " , the achievement of which has been appraised by the ministry of electric power and evaluated as reaching national leading level . 2 . in charge of the major subject aided by the committee of national natural science funds , " study on durability of high bolumes of fly ash concrete " , the first phase achievement of which has been commended by the committee . 3 . in charge of one of major subjects of the national ninth five - year plan , i . e . " study on high performance concrete in marine engineering , design and construction " . 4 . acting as one of editors - in - chief of " technical specification for abrasion and cavities resistance of concrete in hydraulic structures " , which is issued by the ministry of water resources . 5 . by providing the repairing and strengthening schemes on seepage and cracks of the basement of nanjing lukou international airport , the air traffic opening of the airport was ensured as scheduled . 6 . consulting services on techniques of high performance and abrasion - erosion resistance concrete for three - gorges project , anti - corrosion of reinforced concrete strutures for the ore port of shanghai baoshan iron and steel works , mass fly ash concrete for jiangyin yangtze river bridge and pumping concrete for nanjing yangtze river second bridge 主持国家“八五”攻关项目“普定碾压混凝土坝上游面丙乳砂浆防渗层大面积施工工艺研究” ，成果通过部级鉴定，评价属国内领先水平； 2 .主持国家自然科学基金重大项目“高掺量粉煤灰混凝土的长期性能研究“ ，阶段成果获国家自然科学基金委通报表彰与奖励； 3 .主持国家“九五”攻关项目“海工高性能混凝土成套技术研究” ； 4 .水利部“水工混凝土抗冲磨防空蚀技术规范”的主编之一； 5 .为南京禄口国际机场地下室修漏与裂缝补提出技术方案被采纳并实施，为机场如期通航作出贡献； 6 .为三峡工程抗冲磨高性能混凝土技术、上海宝钢矿石码头钢筋混凝土防腐蚀技术、江阴长江大桥大体积粉煤灰混凝土技术、南京长江二桥泵送混凝土技术等提供咨询建议。
Every performance of this text to high - performance concrete of fly ash has done detailed research , and to the concrete respectively to person who mix of fly ash kinds of influence of performance and fly ash concrete some questions that should notice carry on analysis and discussion in not constructing 摘要本文对粉煤灰高性能混凝土的各项性能作了详细的研究，并针对粉煤灰的掺入量对混凝土各种性能的影响以及粉煤灰混凝土在施工中应注意的一些问题进行了分析和探讨。
And then the hydration process , the components and quantities of hydration products and its morphology of fly ash concrete of each mix proportion are systematically investigated by dta and sem . the enhancing mechanism of the corrosion resistance of lvfac is analyzed and discussed 然后利用热分析技术（ dta ） 、扫描电子显微镜（ sem ）等现代测试技术与分析方法，对不同配合比的粉煤灰混凝土的水化进程、水化产物组成与数量的变化（包括标准养护和受溶液侵蚀两种情况）及其形貌进行系统的研究。
