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- The Rational Determination of the Concrete Strength Grade in Concrete Structure 混凝土结构中混凝土强度等级的合理确定
- Reasonable Design of Concrete Strength Grade of R.C. Beam, Floor and Column 现浇钢筋混凝土结构梁板与柱混凝土强度等级的合理设计
- concrete strength grade 混凝土强度等级
- Schedule for concrete supply: fix the dates, times, quantity, types, strength grade and other technical requirements. 计划安排：落实混凝土供应日期，时间、数量、品种、强度等级和技术要求。
- The mechanical properties of limestone chip concrete with ordinary strength grade were studied, and the relationships between the mechanical properties were analyzed. 本文研究了常用强度等级的石灰石石屑代砂混凝土的力学性能 ,并对各项力学性能指标之间的相关关系进行了统计分析。
- The more the admixture, the lower the concrete strength. 掺量过高时,混凝土的强度降低;
- In the test, the strength grade of concrete is C20 and C60, and the cementitious system contains 10%, 20%, 30% and 40% of fly ash in accord with weight. 实验中应用的混凝土的强度等级分别为C20和C60，其中粉煤灰的掺量（胶凝材料的质量分数）分别为未掺、10%25、20%25、30%25、40%25。
- The results showed that the strength of high volume fly-ash concrete could reach the middle and low strength grade with low w/b and low volume of cement. 对大掺量粉煤灰混凝土的配合比、力学性能与耐久性能进行研究,结果表明:在低水泥用量和低水胶比条件下,力学性能完全可以满足中低强度等级混凝土的技术要求。
- The concrete for face slab is designed to have an age of 28 days, the strength grade of C25, the frost resistant grade of D100, and the impermeability grade of S12. The single layer steel bar is arranged in the middle part of face slab and in the plinth. 面板混凝土设计采用28d龄期,其强度等级为C25,抗渗等级S12,抗冻等级D100,单层钢筋布置在面板的中间;
- Consequently, simple-crushing recycled fine aggregate are able to make C25-C50 concrete and particle-shaping aggregated are utilized to make concrete with the strength grade between C35 and C60. 简单破碎再生细骨料可以配制C25至C50混凝土，颗粒整形再生细骨料可以配制C35至C60混凝土。
- A constructive formula of ultrasonic-rebound method to test concrete strength is presented. 摘要提出一种超声回弹综合法检测混凝土强度的推定公式。
- So both theoretical analysis and test show that concrete strength can be obtained by transverse cutting method. 因此，理论分析与试验结果都表明，可以采用横劈的方法得到混凝土的强度。
- It is manufactured in standard strength and extra strength grades. 它以标准长度和和额外加长等级制造。
- The way to influence the concrete strength is floc and arborization formed in concrete. 影响混凝土强度的方式是在混凝土中形成絮状集合体和树枝状细脉。
- The effects of volume fraction and concrete strength on tensile strength of SFRC are analyzed with an experiment. 通过试验，分析了钢纤维混凝土极限抗拉强度与钢纤维体积掺率及基体强度等级的关系。
- The accuracy of concrete strength evaluation has a great influence on the safety assessment of structures. 摘要混凝土强度评定的准确性对结构物的安全性评价具有很大的影响。
- By maintaining workability, but at a lower water content, concrete strength may be increased without the need for further cement addition. 保持工作度不变，在低用水量时，不必增加水泥用量，混凝土的强度也能增加。
- different strength grade concrete 不同强度等级混凝土
- This paper studies emphatically the changes of concrete strength under different high temperatures,and the performance of aggregate after brokenness. 综述了再生骨料混凝土再生骨料特性、力学性能、耐久性、改性研究等,并提出了再生骨料混凝土的研究方向。
- The cement strength grade is confirmed with the way of physical treatment.But,anticipative ef-fect cannot come true with the way that the dispersity is controlled strictly during technics processing. 水泥强度等级采用物理胶砂方法加以确定,在工艺生产上对分散度(细度、比表面积)加以严格控制却难以达到预期的效果。
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- 农业及相关产业增加值 - the added value of agriculture and related industries
