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The result indicates that three groups of concrete beams strengthened by anchor-bolted steel plate can be loaded as far as they were destroyed; compared with unstrengthened beams ,these beams strengthened by steel plate using adhesive or anchor all can achieve a seventy percent higher loading capacity and thirty percent higher stiffness. On the condition that with the same steel plate ,concrete beams strengthened by bolting steel plate can work as good as those beams strengthened by using adhesive.

试验结果表明：三种锚固布置方式加固梁都能保证钢板与混凝土联合工作直至梁破坏；与未加固梁比较，锚固钢板加固梁和外粘钢板加固梁一样，都能有效提高梁的承载力和刚度，其中承载力提高幅度约为70%；刚度提高约为30%，这说明在钢板量相同的情况下，锚固钢板加固梁能够达到与粘结加固基本相同的加固效果。

The engineering computing model of projectile penetrating in to concrete objectives based on twoˉdimensional eˉ quations of motion was analyzed, the formula of calculating penetra tion depth was built, which includes the following main components: projectile shape, projectile mass, penetration velo city, compressive strength and density of the reinˉ forced concrete.

分析了一种基于二维运动方程的对混凝土目标侵彻的工程计算模型，建立了包含弹丸质量、弹丸形状、侵彻速度、混凝土目标的抗压强度和密度等因子的侵彻深度计算公式。

The paper discusses the design thoughts about the mixing proportion of big volumed concrete. The causes of concrete's heat of hydration and contraction are analyzed even the corresponding settlement methods are offered and compartment analysis is made.

临汾污水处理厂是我公司承建的一大型污水处理工程，它不但工程量大(80 0 0m3 以上)，而且其中大部分为大体积混凝土(最厚处达 3 。3m)，抗渗要求P6，同时多为暴露工程(要求混凝土具有高耐久性)。

Fly ash and slag can increase the resistance of concrete to chlorid e ion penetration,and silica fume,metakaolin,rice husk ash and some content s lag can increase significantly the resistance of concrete to chloride ion penetr ation.

粉煤灰和矿渣能提高混凝土的抗氯离子渗透扩散能力，硅粉、偏高岭土、稻壳灰和适当掺量的矿渣能大幅度提高混凝土的抗氯离子渗透扩散能力。

With the development of information-construction, More and more quick, abundant, reliable, undamage examination method to concrete strength are needed. The traditonal examination method to concrete strength can not satisfy the examination request. Study on nail-shotting gun examination system for shotcrete strength is very important for either theory or practice.

随着信息化施工的发展，对快速、大量、可靠、无损检测混凝土强度的技术要求越来越高，传统的强度检测方法难以满足要求，研究喷混凝土强度气压射钉枪检测系统具有重要的理论和实际意义。

The concrete"s creep is an important part in concrete bridge"s structure design.

混凝土的徐变是混凝土桥梁结构设计计算中的一项重要内容。

Compared with prestressed concrete with bonded tendons, it abridges preformed hole, drifting steel, grouting craft etc, the method of laying steels is more agile; Compared with reinforced concrete, it strengthens the applicability of the building function, economizes a great deal of steel material and improves the structure to be subjected to the dint function clearly Therefore, be close to more than ten in the last yearses to construct the application in the structure to get the fast fierce development in our country.

与有粘结预应力混凝土相比，省略了预留孔道、穿筋、灌浆等工艺，布筋方式更加灵活；与普通钢筋混凝土相比，增强了建筑功能的适用性、节约大量钢材、明显地改善结构受力性能。因此，近十几年来在我国建筑结构中的应用得到迅猛发展。

The mathematic model and the neural networks between strength after acidifying and acidified depth can reflect the corrosion condition of mortar and concrete, which have certain referential value for estimating the acidifying resistance durability of concrete in southwest China.

本文最后所得到的腐蚀后的强度和酸化深度的数学模型和神经网络，可以较好的反映混凝土受酸雨腐蚀的变化情况，对我国南方酸雨区的混凝土腐蚀的耐久性和经济评估有一定参考价值。

The corrosion resistance of chloride ion for concrete admixed with fly ash and slag is tested,and the corrosive surroundings of steel reinforcement concrete in splashing marine zone and fluctuating water level zone in the south of China are simulated.

东南沿海的海工钢筋混凝土结构物破坏的主要原因，是海水中氯离子对结构物的侵蚀；北方则是结构物受冻融破坏和氯离子侵蚀[1] 。

Its structure and property differ from those of the present aerated concrete and foam concrete.

其结构和性能与目前的加气混凝土或泡沫混凝土存在许多差异。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。