低强度混凝土桩是一种新型的处理桥头深厚软基的工法。
The low intensity concrete piles is a new method which can improve the soft foundation of bridge approaches.
本文通过试验与工程实践，介绍采用碎（砂）石桩及低强度混凝土桩组合构成复合地基的试验成果、计算方法及应用检测成果。
This paper introduces the test results and calculative method by using the composite foundation of sand-stone pile and concrete pile with low strength.
混凝土施工到达一定时间后，强度低，表现出浆体粗糙、松散、凝结不好或强度不够。主要原因有。
The concrete construction reach a certain time, low intensity, and show slurry rough, loose, condensation bad or insufficient strength. Main reasons are.
减水率达25%，坍落度损失低，各龄期混凝土抗压强度都有较大提高。
And water reducing ratio of concrete is 25%, slump lose a little. Its every age compressive strength has increased obviously.
加气混凝土作为一种新型的墙体填充材料，具有容重小、强度低、吸水率高，收缩性大等特性。
As a new type of filling materials, the aerated concrete has the features of low density, low strength, good absorption of water and great contraction.
普通的混凝土垂直运输方式浇筑强度低，受干扰大。
The casting intensity by ordinary vertical concrete transport is low and the disturbance is large.
针对这些缺陷，研制了一种和易性好、保水性好、粘结强度高、收缩率低，适合加气混凝土抹灰用的砂浆。
Aiming at these defects, a kind of special mortar for plastering aerated concrete with good workability, good water retention, high bonding strength and low shrinkage ratio has been prepared.
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。
By maintaining workability, but at a lower water content, concrete strength may be increased without the need for further cement addition.
高性能胶凝材料主要用于高性能混凝土，具有强度高、需水量小、水化垫低和收缩小等特点。
High Performance cementitious material is specially used for high Performance concrete. Propetties of that are high strength, low water demand, low hydration heat and low shrinkage.
拌和及养护的温度高，混凝土抗压强度低。
Casting and curing of concrete at elevated temperature would decrease its compressive strength.
磷渣粉作为掺合料对混凝土性能产生一些不利的影响，一是早期强度低，二是凝结时间长。
As we all know, the use of phosphorous slag powder(PSP)as admixture can lead to some adverse effects in concrete performance, such as low early strength and prolonged setting times.
黄壁庄水库副坝防渗心墙加固工程所需高性能混凝土，要求和易性好、早期强度低、后期强度高、抗渗性能好、低弹模和高抗拉强度。
The high performance concrete for core wall of earth dam must be good workability, low early strength, high final strength, high seepage resistance, low elasticity modulus and high tensile strength.
低塑性混凝土的二次振动效果不是很好，降低了混凝土的强度；
The effect of revibration for low fluidity concrete is not well, which reduces strength of concrete.
研究结果表明，早期失水越多，混凝土中后期强度越低。
Result show that the more the loss of water at early-age, the lower strength of concrete acquired.
分析结果表明：在支撑相同荷载的前提下，混凝土强度越高，造价越低。
The results show that under the same supporting load, the cost of the steel reinforced and tubular concretes decreases as their concrete strength grade increases.
低强度等级混凝土桩(LC桩)由于其工作原理及经济等因素，应用前景十分广泛。
The pile of low strength concrete (LC pile) has very extensive applied foreground because of its working principle AD economic factor.
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.
通过正交试验对低掺量聚丙烯纤维混凝土强度因素影响作了分析，并得到了优化的试验配比。
Through orthogonal experiment the suitable ratio polypropylene fiber concrete with low content was found, and the paper analyses influencing factor on strength.
为研究自密实混凝土板墙加固低强度砂浆砖砌体的抗剪性能，共做了6个墙体加固试件。
The shear behaviors of the low strength brick masonry wall strengthened with the self-compacting reinforce concrete wall have been discussed by 6 experimental models.
首先，钢纤维和轻骨料能弥补普通混凝土存在的抗拉强度低和自重大等方面的不足。
First, the steel fiber reinforced concrete and the lightweight aggregate concrete can make up the deficiencies of common concrete such as low tensile strength and large dead weight.
混凝土试件的含水率越高，相对残余抗压强度越低。
The higher water content percent is, the lower the relative remain compressive strength of concrete is.
一般认为，混凝土的强度越高，其渗透性越低，以及耐久性越好。
It is often believed that the higher the strength of concrete, the lower of its permeability, and the better of its durability.
结果表明：选用低强度等级水泥、用粉煤灰部分取代水泥以及加入纤维都可以在一定程度上提高混凝土的自愈合效果。
The test results show that low grade cement, replacement of cement by fly ash, and adding some carbon fibers are all helpful in improving the self-healing performance of concrete.
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.
由于传统砂浆用于加气混凝土抹灰时，存在保水性差、粘结强度低、易开裂空鼓等缺陷，这严重阻碍了加气混凝土的广泛应用。
Defects of bad water retention, low bonding strength, easy cracking and bulging seriously impede extensive application of aerated concrete when common mortar is used for plastering aerated concrete.
结果表明普通低标号混凝土抗冻性能较差，冻融循环对混凝土强度影响较大。
The result indicated that the resistance to freezing and thawing of normal low-strength concrete is very low. Freeze-thaw cycles have important affect to concrete strength.
桥梁建筑材料基本上仍在钢材和混凝土之间选择，而混凝土的主要缺点是抗拉强度低。
The choice of material in construction of Bridges is basically between steel or concrete, and main trouble with concrete is that its tensile strength is very small.
桥梁建筑材料基本上仍在钢材和混凝土之间选择，而混凝土的主要缺点是抗拉强度低。
The choice of material in construction of Bridges is basically between steel or concrete, and main trouble with concrete is that its tensile strength is very small.
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