摘 要：结合郴宁高速公路建设和施工实践过程中出现的裂缝问题，阐述了混凝土裂缝的种类和成因，并针对具体问题从原材料选用到施工过程控制提出了相应的防治与处理措施。 Abstract： Combining with the concrete cracks problems in construction and practical process in Chenzhou-Ningyuan Expressway, types and causes of concrete cracks are presented, and the corresponding preventions and measurements in actual constructions, including selection of raw materials and control of construction process, are offered.

摘 要：介绍了预制扶壁式混凝土挡土墙板的制作工艺，对影响质量的工序环节做了相关分析并给出了控制方法，强调了过程质量检验的重要性。 Abstract：The producing process of precast buttress concrete retaining-soil wallboards is introduced. The relevant analysis on process steps affecting the quality is made and the controlling method is proposed. And the significance of process quality inspection is emphasized.

摘 要： 以质量管理体系为出发点，对混凝土企业质量管理机构的设置进行了研究。说明了混凝土企业参照ISO9001标准编制的质量手册、程序文件和作业指导书是企业质量管理制度的最好范本，并对混凝土企业如何体现ISO质量管理体系中“全员参与”和“以顾客为关注焦点”的管理机制进行了探讨。通过对混凝土企业原材料质量管理、混凝土配合比设计、生产过程以及混凝土出厂前和施工现场交货后应储备的相关技术资料的调查，分析了混凝土企业文件管理的价值。 Abstract: The setup of the quality management institutions for concrete enterprises is researched with a starting point of quality management system. The quality manuals, procedure documents and operation guidance book compiled by the standard of ISO9001 are the best copies for the enterprises' quality management system of concrete enterprises, and how to reflect the administrative mechanism of "all staff participation" and "customer focused" with ISO quality management system in concrete enterprises is discussed. Through the investigations of the raw material quality management of concrete enterprises, mix proportion design of concrete, production procedure, and relative reserve technical data when concrete before leaving factory and after consignment in the construction location, the value of document management in concrete enterprises is analyzed

摘 要：悬辊机悬辊轴经过一段时间的使用后会产生磨损，必须定期修复。采用自动补焊机对悬辊机悬辊轴进行补焊修复，经过一年多的现场使用，和传统的人工修复相比，极大地提高了悬辊轴的修复效率，降低了修复成本，修复后悬辊轴的使用寿命提高2倍以上。 Abstract：After a period of using time, the hanging-roller axis of hanging-roller machine will be weared and teared and it need to be repaired regularly. The auto-repair welding machine is used to repair and weld the hanging-roller axis of hanging-roller machine, and after one year’s field using, comparing with the traditional manual repairing, it can greatly improve the repairing efficiency of hanging-roller axis and reduce the cost of repairing. The service life of hanging-roller axis after repairing can enhance more than two-times.

摘 要：结合实际工程，介绍了直线加速器机房工程重晶石混凝土原材料的选择及重晶石混凝土施工配合比设计。为防止重晶石防辐射大体积混凝土产生裂缝，在施工过程中采取了适当的技术措施及跟踪测温信息化施工的保温养护。实践证明，所采取的措施是可靠有效的。 Abstract：Combining with practical engineering, material selections of barite concrete in linear accelerator machine room project and mix proportion design of barite concrete construction are introduced. To prevent cracks of barite radiation-resistant mass concrete, during the construction process, proper technological measures and insulated and curing techniques of informational construction for tracking and temperature testing are adopted. As a result, the adopting measures are reliable and effective.

摘 要：作为一种新型的高速铁路建筑材料，CRTS-Ⅰ型无砟轨道板具有结构截面尺寸小、自重轻、机械化程度高、易于辅装、便于维护、产品通用性好、造价较低等特点。在哈大高速铁路上获得成功运用，能确保轨道板铺设质量、精度和耐久性，为高速铁路的舒适性和平顺性提供了保证。 Abstract：As a new kind of building material for high-speed railway, CRTS-Ⅰ type unballasted track plates have the characteristics of small size of structure sections, light weight, high mechanization degree, easy paving, convenient maintenance, good products universality and lower cost. Through the successful application on Ha-da high-speed railway, the paving quality, precision and durability of track plates are ensured, which provide an assurance to the comfort and ride performance of high-speed railway.