1.The experiments for sulfate corrosion on concrete with high activity and superfine admixture (FC admixture) are carried out. The tests show that the concrete resistance to corrosion can be greatly increased by adding proper FC admixture into concrete.
对掺入高活性特细掺和料(FC掺和料)的混凝土进行硫酸盐侵蚀试验 ,试验表明在混凝土中掺加适量FC料 ,可以提高混凝土的耐腐蚀性能。
2.The authors of this paper aimed at the present state in which the high quality dry fly ash suitably to used as the active admixture of high performance concrete is small and most of it is low class wet fly ash,developed the class 525R～625R special cement for high performance concrete adopted pre activated wet fly ash used as addition of cement,as well as by adding superplasticizer and limestone powder etc. admixture by orthogonal experiments.
本文针对我国粉煤灰中适于作高性能混凝土活性掺和料的优质干排灰较少 ,大部分为低等级湿排粉煤灰的现状 ,用经过预激活处理的湿排粉煤灰作水泥混合材 ,并掺入高效减水剂、石灰石粉等外加剂 ,通过正交试验配制出 5 2 5R～ 6 2 5R高性能混凝土专用水泥。
3.The most common method of compensating cold end of electric thermo-couple is to place cold end into admixture the iced water shares to keep it basically at the temperature of 0℃. By using the circuit in this paper,the cold end of electric thermocouple can also gain a good temperature compensation without placing it into the admixture the iced water shares.
热电偶的冷端补偿，最常用的方法是将冷端置于冰水共存的混合物中，使冷端温度基本处于0℃．采用本文的电路，热电偶冷端也可以不置于冰水共存的混合物中，而得到较好的温度补偿作用．
4.Based on analysis of research history and status of mineral admixture, the paper discusses the shortcomings and problems of current reseach, and finally suggests the trend of mineral admixture research.
通过对矿物掺合料研究历史和研究现状的分析，探讨了当前研究的主要缺陷及存在的问题，并展望了下一步的研究方向。
5.Abstract: Based on the fundamental principle of hypothesis strain equivalence,itwas investigated a physical concept of high strength concrete at minus temperature (HSCMT) freezing damage parameter,the elastic modulus of frost concrete with anti freeziug admixture and without antifreezing admixture built and it was analyzed their variate process and the condition adaptated.It is purpose to judge HSCMT frost failure process.
文摘:从应变等效性假说的基本原理出发，研究了负温混凝土冻结损伤参数——弹性模量法中受冻后测试的损伤混凝土弹性模量的物理概念，从而分析了掺防冻剂混凝土及不掺防冻剂混凝土受冻后的弹性模量变化过程及其选用该参数的适应性条件，为判断负温高强混凝土材料冻结失效过程提供保证。
6.Results Some drugs were stable in total nutrient admixture and the other neither.
结果 部分药物在全营养混合液中理化性质稳定 ,而另部分药物不稳定。
7.Effect of Calcined Phosphogypsum on Durability of Mineral Admixture Concrete
煅烧磷石膏对含掺和料混凝土耐久性的影响
8.The results indicated: the high active mineral admixture slurry solid content could substitute 10%~30% cement to product the high performance concrete of C30~C50,its workability and the later performance had achieved the national standards,and has realized the low hydration heat,the low chemical shrinkage and the low cost application effect.
结果表明:高活性矿物掺合料浆按固含量替代10%～30%的水泥可配制出C30～C50的高性能混凝土,其工作性及后期性能均达到了国家标准,实现了低水化热、低收缩、低成本的应用效果。
9.It gives play to compounding overlapping effect with high quality admixture,achieved the high performance of concrete and has comprehensive functions of the shringkage-compensating? crack-resisting? permeation-preventing and high durability.
利用地方材料研制出的PNF流化膨胀剂具有减水、泵送、低掺量、低碱含量、高膨胀率、延滞性微膨胀等特点 ,与优质掺和料一起还可发挥复合迭加效应 ,实现混凝土的高性能化 ,具有补偿收缩、实现混凝土抗裂、防渗、高耐久性的综合功能。
10.Effect of the mineral admixture on the compatibi lity of the cement and the superplasticizer at low water binder ratio
低水胶比下矿物掺合料对水泥与减水剂相容性的影响
