workability of concrete造句

• Influence of water absorption and pre - wetted method of lightweight aggregate on the workability of concrete
  轻集料的吸水率与预处理时间对混凝土工作性的影响
• L & t is required to control the quality of supplied concrete to ensure the qualified slump and workability of concrete during casting
  要求l & t注意控制混凝土的质量，保证供到施工现场的混凝土塌落度及和易性。
• The results indicate that the limiting grain size of coarse aggregate has significant effect on the strength and workability of concrete , but it is lower than that of w / b ratio
  结果表明：粗骨料的最大粒径对混凝土强度、和易性有明显影响，但水胶比仍是影响混凝土强度及和易性的主要因素。
• By uses of handan raw materials , this paper studies the influence of coarse aggregate limiting grain size , water - binder ratio , fly ash replacement , sand - total aggregate ratio on the strength and workability of concrete prepared with low water - binder ratio
  摘要本试验采用邯郸当地的混凝土原材料，利用正交设计方法，试验研究和分析了粗骨料最大粒径、水胶比、粉煤灰掺量、砂率对低水胶比混凝土的强度及和易性的影响。
• The fourteen simply supported beams mixed with the polypropylene fiber are tested to study the effect of workability of concrete , presentation quality of structures , cracking load and stiffness of beam , and crack resistance of structures due to the polypropylene fiber
  本文通过14根掺聚丙烯纤维钢筋混凝土梁的试验，主要研究掺聚丙烯纤维对混凝土和易性和结构物外观质量影响效果；对钢筋混凝土梁开裂荷载的影响；对钢筋混凝土梁刚度的增强效果；以及对钢筋混凝土结构增韧阻裂的改善效果。
• The one of most important factor of affecting durabilities in construction concrete is chloride deterioration . the chloride penetration current exceeds 2 , 000 coulomb in the no mineral admixtures silicate cement , using 30 % ~ 40 % fly ash it falls to 800 coulomb and the 60 % micro - slag falls to 500 coulomb ; though silica fume reduces penetration current , it deteriorates the workability of concrete
  氯离子侵蚀是影响混凝土结构安全性最重要因素之一，不掺加任何矿物掺合料，氯离子渗透电量一般大于2000库仑；粉煤灰掺量在30 40 ，渗透电量达到800库仑；矿粉掺量在60左右，渗透电量达到500库仑，并具有较高的综合性能；硅灰可以改善混凝土氯离子渗透能力，但恶化了混凝土工作性。
• Experimental results indicated that the polypropylene fiber can improve the workability of concrete availably , and can increase the presentation quality of structures with the voids and pits decreased ; the cracks of beam are controlled effectively , the width and length of crack decreased , the dispersibility of crack in beam face improved , and the ductility of beam increased ; and the cracking load of reinforced concrete beam is increased , the amplify up to about 30 % , simultaneity the ultimate bear capacity increased
  试验研究表明，使用聚丙烯纤维后，能有效改善新拌混凝土的和易性，并能增强混凝土构件的外观质量，减少构件表面蜂窝、麻面、气孔、细小裂纹等；同时，在破坏试验过程中发现梁的裂缝能得到有效控制，裂缝宽度减小，裂缝的发展高度降低，裂缝的条数增加，提高了梁截面的裂缝分散能力，增强了梁中混凝土的韧性；提高了钢筋混凝土梁的开裂荷载，幅度可达30左右，增强了结构的延性，提高了结构的抗裂性能和屈服荷载。