总结混凝土的收缩及膨胀机理。
To summarize the shrinkage and expansion mechanism of core concrete.
拱度和混凝土的收缩、徐变的影响比较明显。
The effect of arch degree, concrete's shrink and creep is distinct.
拱度和混凝土的收缩、徐变的影响比较明显。
The effect of arch degree, creep and shrink of concrete is very distinct.
配筋率不同的情况下补偿收缩混凝土的收缩规律；
The shrinkage of shrinkage-compensated concrete with different steel ratio.
混凝土的收缩徐变会引起混凝土连续梁桥不断上拱或下挠。
The shrinkage and creep of concrete will make concrete continuous beam Bridges hogging or deflecting...
混凝土的收缩开裂模型可以定量分析收缩对混凝土开裂的影响。
The concrete shrinkage model can quantificationally analyze the shrinkage influence to concrete.
另一方面由于混凝土的收缩受到土的约束，底板会产生拉应力。
On the other hand, the tensile stress will appear due to the concrete's shrinkage restricted by the earth.
轻集料混凝土的收缩变形比普通混凝土大，易使混凝土形成裂缝。
The shrinkage of LWAC is increased than that of Normal Concrete (NC), which will bring about the crack of LWAC more easily.
混凝土的收缩和徐变较不引气混凝土相比较小；耐久性能明显改善。
The air entraining concrete's shrinkage and creep were less than concrete which not content air entrained agent, and the durability performance was improved obviously.
如何找出混凝土的收缩机理，从而更好的控制收缩裂缝，是有待解决的问题。
So, how to find out the shrinkage reasons of merchandise concrete and control shrinkage cracks still to be solved problem.
混凝土的收缩徐变和车辆超载是大跨度连续梁桥主梁下挠严重的主要因素之一。
The creep is the main reasons why the deflection of the girder is larger than that of code.
掺加适量膨胀剂可补偿混凝土的收缩，使混凝土结构达到较好的裂渗控制效果。
Concrete expansion admixture can compensate concrete shrink-age so that the concrete structure can resist crack and penetration efficient-ly.
研究了超细矿渣对高强混凝土和补偿收缩混凝土的收缩、膨胀性能的不同影响。
In this paper, dealt with are the different effects of the superfine slag on the shrinkage and expansivity of the high strength concrete (HSC) and the shrinkage-compensating concrete.
主要研究内容如下：1、观测得到素混凝土及钢管混凝土的收缩（膨胀）徐变曲线。
This thesis observes the shrink and creep curve of plain concrete and concrete filled steel tubes.
阐述了混凝土的收缩作用和温度作用，并提出了在工程实践中进行裂缝控制的措施。
This paper expounds the shrinkage effect and temperature effect of the concrete, and advances some measures for controlling the cracks of the concrete in the construction practice.
阐述了混凝土的收缩作用和温度作用，并提出了在工程实践中进行裂缝控制的措施。
With the increasing applications of large span, high-rising or thin-walled concrete structures at present, temperature action often calls reletively high stresses.
研究结果表明：随着胶结料总量和砂率的增大，高强高性能混凝土的收缩开裂趋于严重；
The result shows that the more the binder material or sand rate, the more serious the shrinkage cracking.
自补偿收缩理论建立以来，采用混凝土膨胀剂抑制混凝土的收缩开裂是行之有效的控制方法。
Restraining the shrinkage and crack of concrete by using of expansive agent has been an effective controlling method since the setting of shrinkage-compensating theory.
研究结果表明，随着水玻璃模数的增加，无机矿物聚合物混凝土的收缩呈现先降低后增加的趋势；
The results show that shrinkage of concrete firstly decreases and then increases , with the increase of modulus of water glass.
针对预弯组合梁的施工特点，建立了一套综合考虑混凝土的收缩、徐变及钢材松弛影响的时效分析方法。
Based on the construction peculiarity of preflexed beam bridges, an analytical method is proposed for predicting properties of bridges structures.
新浇筑混凝土的收缩必须已经完成，否则以后高强彩色水泥自流平可能会因为混凝土自身收缩开裂而导致开裂。
The new pouring of concretes hrinkage must have been completed, or after the cement-based self-leveling may be due to theirs hrinkage cracking of concrete caused by cracking.
在结构长度超长的墙体中采用无黏结预应力技术，可以抵消混凝土的收缩应力和温度应力，提高墙体的抗裂性能。
However, when they are considered with the unbonded prestressed slab together, the seismic performance of the whole structure has not been enough clarified.
由于多孔混凝土存在收缩现象，为研究多孔混凝土基层路面的接缝设置及反射裂缝问题，必须首先研究多孔混凝土的收缩特性。
Porous concrete will shrink, so it is necessary to deal with its shrinkage character firstly when studying the problems of joint location and reflection crack of porous concrete base.
江津观音岩长江大桥为结合梁桥，为防止桥面板湿接缝在约束条件下产生裂缝，该桥面板湿接缝要求采用微膨胀混凝土，以补偿混凝土的收缩、徐变。
In order to prevent the cracks that would be likely caused by restricted conditions of the wet-joint, the wet-joint demands using expansive concrete to compensate the shrinkage and creep.
研究结果表明：本文提出的采用圆环法和与圆环同步的测长法相结合共同评价高强混凝土的收缩开裂趋势的方法，能较好的评价高强混凝土的收缩性能。
The result shows that the tests, which are used in this paper, including ring test and free shrinkage test, could do well in evaluating the shrinkage-cracking potential of HSC.
在实际工程中，混凝土因收缩所引起的裂缝是最常见的。
In the actual project, it is the most common because concrete shrinks the crack caused.
在实际工程中，混凝土因收缩所引起的裂缝是最常见的。
In the actual project, it is the most common because concrete shrinks the crack caused.
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