It is pointed out that the increase of concrete strength at early stage and early curing can reduce the internal stress including both the shrinkage and temperature stresses.
文中指出提高混凝土早期强度和及早养护，可减小混凝土内部应力（包括收缩应力和温度应力）。
Through the study the influence of the shape, the proportion of the dust and the grade of sand to the workability and the mechanical property of self-compacting concrete, it is found that Super Fine Mountain Sand Artifical Sand are not suit to prepare low and middle strength self-compacting concrete, but when they are combined and the additive and assistant band material are used, C20-C40 high performance self-compacting concrete is prepared; the corresponding additive is developed to solve the delamination caused by the low proportion of banding material; the evaluating system for the workability of low and middle strength self-compacting concrete is built; the controlling method for production, construction and curing was set up.
通过分析特细山砂和机制砂的颗粒形态、粉末含量、颗粒级配等特性对自密实混凝土的工作性能和力学性能的影响，发现特细山砂、机制砂不宜单独用于配制中低强度等级自密实混凝土，宜将特细山砂和机制砂进行合理复配，并选择合适的外加剂和矿物掺合料，优化配合比设计，可生产C20～C40中低强度等级自密实高性能混凝土；研制开发出了具有高效减水、保塑、抗离析功能的外加剂，有效解决了中低强度等级自密实混凝土由于胶凝材料用量少而出现的离析、泌水问题；应用正交设计方法，对因素和水平进行合理选择，确定了生产中低等级自密实混凝土的最优配合比；建立了中低强度等级自密实混凝土的工作性评价体系；提出了生产、施工及养护的质量控制技术方法。
To solve the leakage proof of underground project, it discusses how to increase the self leakage proof ability of the concrete from the selection of waterproofing agent, the design of adapted ratio, the quality control and measurement accuracy of raw material the vibrating and detail structure in construction, the striking time of concrete and the curing, to supply reference.
为了解决好地下工程的防渗漏问题，从防水剂的选择及配合比设计、原材料的质量控制及准确计量、施工中的振捣及细部结构以及混凝土的拆模时间及养护等方面探讨了如何提高混凝土本身的抗渗能力，以供参考。
The practice of Bao-steel Group 1780mm steel rolling house shows seamless construction super long and super wide mass concrete box foundation with general concrete, which has no. deformation seam, no repour strip and no special material, can reach good result in cracking control by the sequential construction method, optimization design, material control, concrete curing without increasing the cost or extension.
结合宝钢集团不锈钢1780mm热轧工程超长、超宽的大体积混凝土箱型基础，在施工过程中不设变形缝、不留后浇带、混凝土内不掺特殊材料，采用分块跳仓浇筑施工工艺，结合配合比设计及优化、原材料控制、加强温控和养护等综合技术措施，可在不增加投资、不延长工期的条件下达到有效控制混凝土裂缝的目的。
The paper mainly discussed the curing methods and attentions of reinforced concrete post-tensioning precast box beam in winter for reference.
主要对钢筋砼后张法预制箱梁冬季养生方法及施工注意事项进行了分析讨论。
The test results show: The bonding function of aggregates and cement stones in recycled concrete can be improved by the preprocessing method availably, which make its fracture toughness to raise 20% equally or so; Along with the increase of maximum grain size, its fracture toughness grows, but the elevated range declines gradually, for instance, a fracture toughness of a maximum grain size with 20mm differs 0.0031% only for the 25 mms, which can think that both are equal; Along with the increase of age, its fracture toughness grows, and the elevated range is in accordance with the natural aggregate concrete basically; Its fracture toughness is similar to that of nature aggregate concrete, and both increase together with the declining water cement ratio; Its fracture toughness is smaller than that of nature aggregate concrete, and its fracture toughness is about (75~97)% of that of nature aggregate concrete, but fracture toughness of recycled concrete which was made to use recycled aggregate with the maximum grain size of 20mm which was handled by preprocessing methods with cement paste joined the right amount of fly ash, is equal with natural aggregate concrete for 90 days.2, The main influence factors on the fracture toughness of recycled concrete have been carried on the outstanding analysis, and the results show that curing age, preprocessing method of coarse aggregate, water cement ratio and maximum grain size of coarse aggregate are one by one in order smaller than etc.
试验结果表明：预处理方法能有效地改善再生混凝土中骨料与水泥石之间的粘结性能，其断裂韧度平均提高20%左右；再生混凝土断裂韧度随着粒径的增加而提高，但提高的幅度逐渐减小，粒径为25mm的断裂韧度与粒径20mm时的断裂韧度仅相差0.303%，可以认为两者相当；再生混凝土断裂韧度随龄期的增加而提高，提高的幅度与天然骨料混凝土基本一致，其趋势在增加；与天然骨料混凝土一样，再生混凝土的断裂韧度随着水灰比减小而增加；再生混凝土的断裂韧度低于天然骨料混凝土的，大约为其断裂韧度(75～97)%，而选用粒径为20mm，采用水泥浆掺加适量粉煤灰的预处理技术配制的再生混凝土，龄期为90天时的断裂韧度与天然骨料混凝土的相当。2、通过对影响断裂韧度的主要因素进行显著性分析，可知各因素对断裂韧度影响的显著性大小依次为养护龄期、粗骨料预处理方式、水灰比及粗骨料最大粒径等。
The longer concrete is kept damp during it's initial curing period, the harder and more durable it will be.
具体的时间越长，在保持潮湿它的固化期间初步的，困难和更持久的情况正是如此。
In the paper, particular requests of silicon powder concrete from choicing matertal and construction technique to pouring and curing was studied too.
从材料选择、施工工艺和浇筑养护等方面研究硅粉混凝土施工的特殊要求。
The article makes a summary about the interactions of curing, sawn joint and slab rupture of concrete pavement in building HA-DA Highway, and proposes some necessary measures to be taken in construction
本文通过哈大路水泥路面施工实践对其养生、切缝与断板之间的关系进行了总结，提出了施工时应采取的一些措施。
Moreover, but also at the Eastern Jin Dynasty door valve politics have direct and related profound speech the characteristics of poems, Rule the metaphysics of thought propagate and pay attention to feeling of higher than, and politics out of consolidating need who oneself rules valve door as door valve politics, Advertise in order to paying attention to feeling of curing, make profound speech have dense high by poem then also, It concrete to show and speak frankly profound to pay attention to among poem and related things become and express the profound carrier that paid attention to poem.
不仅如此，玄言诗的种种特征也与东晋门阀政治有直接关联，作为门阀政治统治思想的玄学宣扬理高于情，而门阀政治出于巩固自身统治的需要，亦鼓吹以理治情，遂使玄言诗具有浓重的崇理倾向，其具体表现则是在诗中直陈玄理并且诗中所涉事物均成为表达玄理的载体。
Production and marketing of our main products include series of wear-resistant flooring materials, specialty industrial flooring series, sealed concrete curing agent system, flooring epoxy resin series, PU series of flexible polyurethane floor, non-shock non-slip-lane system, underground parking facilities planning systems, while companies with advanced ultra-flat construction technology pyong.
我们主要生产和销售的产品包括耐磨材料地坪系列、特种工业地坪系列、混凝土密封固化剂系统、环氧树脂地坪系列、PU弹性聚氨脂地坪系列、无震动防滑车道系统、地下停车场规划设施系统，同时公司具有先进的超平地坪施工技术。
The influence of expanding agent on the shrinkage of semi-lightweight concrete is studied under different curing condition.
研究了在不同养护制度下膨胀剂对次轻混凝土收缩的影响：膨胀剂能够降低次轻混凝土的收缩，随着膨胀剂掺量的增大，次轻混凝土的收缩减小。
Adding CCCW agent to cement mortar makes surface treatment and curing of concrete more convenient and waterproofing design of construction joint, pile head and post-pouring joint simpler.
将水泥基渗透结晶型防水剂掺在水泥砂浆中代替传统涂层可使混凝土表面处理及养护方便、易操作，也给施工缝、桩头、后浇带的防水带来更简洁的节点设计。
According to the systematic experiments and analysis, the method of testing the sample under the same curing condition to the structure is given to reflect the fact strength of the structural concrete.
本文通过系统的试验研究，确定寻求用同条件养护试件强度来反映结构实体中的混凝土强度是可行的。
Concrete curing should immediately start after frame removed.
3.4.3.6砼拆模后立即均匀涂刷砼养护液。
The relationship between begenning curing time and early shrinkage of concrete was studied.
研究了起始养护时间对混凝土早期收缩的影响。
In this paper, based on the experimental studies, the effects of the ARC-3 glass fiber for the improvement of the flexural tensile and the unconfined compressive of the concrete are analysed. Further statistical relations between flexural tensile strength, volume ratio of fiber and curing time, and a mathmatical model of the flexural tensile is presented. Finally, the optimum fiber volume ratio in the concrete is presented. In this paper, a mathematical model of the volation between the flexural ten...
本文通过大量试验研究，分析了ARC-3型高耐碱玻璃纤维对水混混凝土抗折强度及抗压强度的增强效果；提出了抗折强度与纤维掺量和龄期的统计关系，以及抗折强度的数学模型；提出了最佳纤维掺量；从玻璃纤维增强混凝土的应力-应变关系分析了其塑性性质和抗裂性能，对其抗压模量和抗弯模量的测试分析，提出工程设计时可忽略模量的变化；本文给出的抗折强度与抗压强度关系的数学模型，可直接供生产单位使用。
The composition and method of curing influence the microstructure and thus the physical and mechanical properties of aerated concrete.
的组成和方法固化影响的微观结构，从而使物理和力学性能的加气混凝土。
The technique is adopted at construction scheme of invert, when we begin construct the invert, deposit smaller slump concrete first, then lay precast reinforced concrete slab on it. Make well use of the characteristics that this type concrete strength increase quickly and its deformation is small by forced, and between two tapping time (2-3 hours), the trucks can go through it, so it shorten curing time of the invert concrete, provide the fast passage for the trucks and attain the fast-speed construction purpose.
采用该技术进行仰拱施工方案主要是在隧道仰拱和铺底施工时，先铺筑坍落度较小的混凝土，然后将混凝土预制板逐块铺在该混凝土面上，充分利用这类混凝土强度增长快、受力后变形较小的特点，利用隧道施工的两次出渣间隙(2～3小时)达到预制板上能通行汽车的要求。
Of not less than 14d. Construction of this project, the general structure of concrete curing mainly to natural conservation.
本工程施工中，一般的结构混凝土养护以自然养护为主。