Abnormal setting of concrete and improper control of curing condition is two important factors affecting the quality of concrete 混凝土不正常凝结和养护条件控制不力是影响混凝土工程质量的两个重要方面。
On - site concrete batching plants are required to ensure a continuous supply of concrete for west rail construction 西铁于工地设置混凝土厂，以确保在进行大型混凝土工程（如为大型桩柱灌桨）时有稳定的混凝土供应，满足工程需要。
Quality degree evaluate standard of unit engineering for hydro power and water conservancy construction engineering . hydraulic roller compacted concrete engineering 水电水利基本建设工程单元工程质量等级评定标准八.水工碾压混凝土工程
But some problems have been found when expensive admixture is used in hpc . the hpc with expensive agent is still cracking 但是随着膨胀剂应用于高性能混凝土工程的同时，也伴随着出现了一些问题，使用了膨胀剂的高性能混凝土仍然出现裂缝。
Because the economic benefits are remarkable , the employer has given bonus . besides , the achievement in research has been adopted in the other large volume hydro - structure 同时，其研究成果为同类大体积水工混凝土工程温控防裂提供了有1意义的参考。
The smooth surface of the phenolic glue film faced plywood can smoothen the concerte ' s face , especially for the concrete construction with clean water 粉醛覆膜胶合板表面光滑，能够制作平滑的混凝土表面，特别适合现浇清水混凝土工程施工，使用后表面极佳。
In this paper , the effects of common set - retarders and early - age curing on properties of concrete are studied so as to control the quality of concrete 为此，本论文研究了常用缓凝剂和早期养护条件对混凝土性能的影响，以期对混凝土工程质量控制具有一定的指导作用。
The purpose of this paper is to solve the problem of high water cement ratio during construction and low water cement ratio during solidification 摘要目的通过将电渗技末引入到混凝土施工过程，解决混凝土工程中施工要求的大水灰质量比与使用性能要求的小水灰质量比之间的矛盾问题。
The sand is lack in the western china , so preparing self - compacting concrete with low and middle strength with super fine mountain sand and artifical sand is necessary 西部地区河砂匮乏，应用特细山砂和机制砂配制中低强度等级的自密实混凝土是西部地区迫切需要开发的混凝土工程技术。
Abstract : the pre - stress sensor is necessary for measurement in monitoring , research and test in the construction of anchors , pre - stress concrete and pre - stress bridges 文摘:预应力传感器是锚固工程、预应力混凝土工程、预应力桥梁工程等领域进行监测、研究与试验必不可少的测量用传感器。
