求一篇土木工程工民建有关的英文文章，完整的，不要太多字，有没有中文翻译无所谓

The damage processes of ordinary concrete and high strength concrete,attacked by solutions of 2.5%,5.0% and 10%Na2SO4(mass fraction)are studied.And the effects of flexural loads with stress ratios of 25% and 50% of the initial flexural strength on the damage process of concrete are also investigated.The results show that the damage process of concrete attacked by sulfate salt exhibits an initial damaged stage,a performance improving stage and a performance worsening stage.When the concentration of Na2SO4 in a solution increases from 2.5% to 5.0%,the service time of the concrete decreases approximately 25%.Furthermore,it decreases to even 40% with an increase in a Na2SO4 concentration up to 10%.And the flexural load accelerates the deterioration rate of the concrete in the latter period.The stress ratio increases from 0 to 25%,the failure time of the concrete decreases 15%and the failure time decreases between 25% and 35% when the stress ratio increases from 25% to 50%.In addition,sulfate corrosion products of concrete are studied by SEM (scanning electron microscopy),EDS (energy disperse spectroscopy) and XRD(X-ray diffraction).

抛砖引玉一下：

在土木工程中的应用太多了。 现在的计算机技术越来越发达，新的建筑也越来越朝着大跨度、超高度、独特新颖的造型方向发展，传统的结构设计方法很难满足这种需求。计算机模拟技术可以很好的解决这一矛盾。各种计算机辅助计算、分析、绘图软件的广泛应用，才使得一个又一个让人眼前一亮、叹为观止的庞然大物拔地而起。

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