找到达到这个强度所需的时间，对于指导混凝土配合比设计和混凝土施工有着重要的意义。
It is very important for concrete designer and for concrete construction to know the time of the concrete grows this critical strength.
施工单位在做塔吊基础的时候，一定要确保地耐力符合设计要求，钢筋混凝土的强度至少达到设计值的80%。
The construction unit when the tower crane foundation, must ensure that the endurance meets the design requirements, the strength of reinforced concrete at least the design value of 80%.
介绍一种针对专门用于火灾损伤后混凝土强度测试的智能超声诊断系统的原理和硬件设计。
The principle and hardware design of an intelligent diagnosis system used in the testing of concrete intensity damaged after fire are introduced.
该公式可以很容易地通过人们熟知的构件尺寸和混凝土强度推算出断裂韧度，这对工程设计是有益的。
Fracture toughness can easily be calculated from this formula if the specimen dimension and concrete strength are known. This formula is quite useful for engineering design.
实验结果表明：依据该配合比设计方法所配制混凝土的抗压强度与期望值具有良好的一致性。
Experiments results show that using the systematical high performance concrete mix proportion design method can produce concrete with compressive strength cohere well with the expected one.
高性能混凝土是在大幅度提高普通强度混凝土性能的基础上以耐久性设计作为主要指针的一种新型高技术混凝土。
High performance concrete (HPC) is new high-tech concrete, which is on the basis of improving of the property and aimed at the durability design.
结果表明，用粉煤灰陶粒所配制的轻集料混凝土强度较高，干表现密度和热性能均能满足设计要求，而且更经济。
Study results show that sintered fly ash aggregate concrete is relatively high in strength and more economical in use, and its dry density and thermal properties can meet design requirements.
高性能混凝土以高强度、高工作性、高体积稳定性和高耐久性等技术指标为设计目标。
Such high performance concrete aims to have high strength, workability, volume stability and endurance.
这些强度的统计参数和标准值可供按概率极限状态设计方法分析煤矸石轻骨料混凝土各基本构件使用或参考。
Every statistical parameter and standard value can be used or consulted in using design method of probability ultimate state to analyse coal gange light aggregate concrete basic products.
并结合《混凝土重力坝设计规范》中提出的用粒度成分定量指标选取软弱结构面抗剪强度参数，对软弱结构面抗剪强度参数取值问题进行了探讨。
Finally, in combination with quantitative indexes determinied in the code for "Design of Concrete Gravity Dams", the shear strength parameters of weak structural plane are determinied.
高强度混凝土的配合比设计应该遵循低水灰比、低砂率、高骨胶比的原则，这样才能达到比较理想的效果。
The mix design of strong concrete should follow the principles of low water-cement ratio, low sand ratio and high bone-glue ratio, thus the relatively satisfying effect can be achieved.
主要内容归纳如下：(1)高抗折强度路面混凝土的配合比设计方法研究。
The main contents are as follows: (1) The research of grading ratio design method for high bending strength pavement concrete.
然而，在以往的设计中，由于片面的追求强度，因而忽视了桥梁耐久性，导致很多已建混凝土桥梁出现耐久性局部失效和老化现象。
In past centuries, a lot of concrete Bridges were constructed in the word, and the bridge designer paid more attention to structural intensity, but ignored structural durability.
在设计规范与工程实践的基础上，着重论述了梁柱节点不同混凝土强度等级在设计和施工中的处理方法。
Based on design criterion and construction practice, the paper presented the method to treat beam - column node concrete with different strength grade in course of design and construction.
使用现代混凝土技术工艺，通过科学选择混凝土组成材料与设计配合比，获得耐久性好、强度高的高性能混凝土。
Using modern concrete technology process and the composition of materials by scientific selection and design of concrete mix to obtain good durability, high strength, and high-performance concrete.
论述大直径灌注桩水下浇注混凝土时的材料选择、设计参数选择、施工配制强度及配合比设计。
This paper deals with materials, design parameters. construction batch strength and design of mix proportion for underwater concrete cast in a major diameter cast in place pile.
“套箍强化理论”导出的钢筋混凝土承压强度计算公式，被我国各行业混凝土结构设计规范普遍采用。
The calculating equation for bearing strength of reinforced concrete, which is educed by the Theory of Hooping Strengthening, has been adopted in Design Code of concrete Structure.
自行设计了异形钢纤维与混凝土粘结强度试验方法。
The experiment methods of the bonding strength between deformed steel fiber and concrete was self-designed.
纤维混凝土配合比设计，是确保纤维混凝土强度的重要环节。
Fiber concrete mixture design is an important part of assuring fiber concrete strength.
介绍了高强约束混凝土异形截面双向压弯构件承载力的计算方法，计算机分析方法、强度校核法及图表法，可用于工程设计。
This paper introduced calculate methods for non-rectangular confined high-strength concrete columns of load-bearing capacity, which can give reference to engineering design.
根据透水混凝土的结构特征，对其配制参数和配合比计算方法进行了研究，提出了以总孔隙率为第一设计参数，抗压强度为第二参数的配合比设计方法。
A mix proportion design method of pervious concrete is provided, of which total void ratio is the first design parameter and compressive strength is the second one.
参考自密实混凝土和轻骨料混凝土配合比设计原理，采用绝对体积法，成功研制出强度等级为LC30 ~LC50自密实轻骨料高性能混凝土。
Based on the principles of designs of self-compacting and light aggregate concrete mix, SCLC of LC30-LC50 was developed by using absolute volume method.
钢筋混凝土结构考虑二阶效应的非线弹性强度性能和非线弹性稳定性能的理论认识对工程设计具有重要的指导意义。
The guidance of theoretic recognition to second-order effect about nonlinear strength and stability characteristics becomes more important for RC members in structural design.
现场静载试验检测和低应变检测结果表明，单桩承载力满足设计要求，桩身完整，其混凝土强度达到了设计值，可满足工程需要。
The static load test in-situ and low-strain detection show that the bearing capacity of single pile meets design demand; pile integrity is good; concrete strength of pile reaches design value.
提出了混凝土铰在中心受压和偏心受压时的强度计算公式，以及考虑转动的设计方法。
The calculation formulas for strength of concrete hinge under concentric and eccentric compressive forces and the method of design considering the rotation of concrete hinge are suggested.
喷(素)混凝土或喷钢纤维混凝土支护在隧道中广泛应用，其强度指标是否达到设计要求将直接关系到支护结构的可靠度。
Nowadays more and more shotcrete liner are applied in tunnel. Whether the shotcrete strength accord design strength will be directly responsible for the timbering reliability.
通过正交试验设计，由推出试验研究了型钢轻骨料混凝土的平均粘结强度和局部粘结强度。
Based on the push-out tests of steel reinforced lightweight concrete specimens, average bond strength and local bond strength are studied by orthogonal experimental design.
《普通混凝土配合比设计规程》JGJ55—2000中明确指出有条件的地区应研究建立当地的混凝土强度关系式。
The DESIGN REGULATIONS of MIX RATIO of ORDINARY concrete (JGJ55-2000) definitely point out that the con ditioned areas should study and establish the local strength formula of concrete.
《普通混凝土配合比设计规程》JGJ55—2000中明确指出有条件的地区应研究建立当地的混凝土强度关系式。
The DESIGN REGULATIONS of MIX RATIO of ORDINARY concrete (JGJ55-2000) definitely point out that the con ditioned areas should study and establish the local strength formula of concrete.
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