Testing results for effects of high range water reducing agent on hydration temperature elevation, heat emission and strength of the concrete were presented.
介绍了高效减水剂对混凝土水化温度升高、放热率及强度影响的试验结果。
The effects of high temperature, standing time after cooling, methods of cooling and curing on the compressive strength of concrete are discussed.
探讨了受火温度、高温后静置时间及冷却和养护方式对火灾高温后混凝土抗压强度的影响。
The multi-layer explosive spalling damages depend strongly on the high humidity of the lining concrete, the high temperature and.
混凝土的湿度大、火灾温度高且持续时间长是发生多层爆裂损伤的重要条件。
The hydration heat of massive concrete does not emanate easily, so the internal temperature will be very high which will generate high thermal stress, then the temperature crack will appear.
大体积混凝土的水化热不容易及时散发，内部温升将会很高，从而产生很大的温度应力，导致出现温度裂缝。
However, the hydration degree of binder, as well as the adiabatic temperature rise for high strength concrete, will be obviously decreased due to the increase of initial casting temperature.
但却会明显降低高强度等级混凝土所用胶凝材料的水化程度，使其绝热温升值下降。
The change of the components leads to high temperature stress, as well as remarkable shrinkage and deformation; also, its characteristics induce friability and fissility of concrete.
现代混凝土组分的变化导致了温度应力高、收缩变形大，早强和高强也引发了混凝土的早裂和高脆性。
The floodgate walls act as concrete projects of big volume subjected to hostile environments such as high temperature and high dampness and pose a high anti-seeping and anti-leaking demand.
水闸墙体为高温高湿环境下的大体积混凝土工程，防渗、防漏要求高。
This paper experimental studies the effect of low temperature reservation on ordinary concrete and high performance concrete.
本文实验研究了低温养护对普通混凝土和高性能混凝土的抗压强度的影响。
Proper curing temperature is crucial to high calcium cement based materials. This materials is suitable for making autoclaved cement and concrete products.
合适的养护温度对高钙粉煤灰水泥基材料非常重要，高钙粉煤灰水泥基材料适宜制作蒸养水泥混凝土制品。
It is a difficulty to guarantee the high quality for bulk concrete construction in the high temperature weather.
在高温天气如何保证要求高的大体积混凝土的施工质量是一个难题。
This is especially important on a concrete roof, since concrete is a live material which can dilatate with high temperature and create movements on the roof.
在混凝土屋顶上尤其突出，因为混凝土是一种活性建筑材料，高温时会产生膨胀并导致移动。
The results show that it can improve the high temperature stability of stone asphalt concrete by making use of the advantages of the fibers and the rubbers.
试验结果表明：同时采用纤维加筋和干拌橡胶粉技术，可以综合二者优势获得具有良好高温稳定性的多碎石沥青混合料；
This article analyzed the relationship between the resting position of pigs and thermal environment, compared them bio-bed and concrete ground under high temperature condition.
在夏季高温条件下，剖析了生长猪在发酵床和水泥地面上的休息姿势的变化与温热环境的关系。
The research on material characteristic of the steel and concrete under high temperature.
高温下钢筋和混凝土材料特性实验研究。
It is more important to investigate the mechanical properties of concrete in the structures subjected to long-term sub-high temperature.
长期处于亚高温作用下的混凝土结构也需要了解其材料受力性能的变化规律。
The thermal response the recycled concrete column at high temperature and the bearing capacity of the recycled concrete column are analyzed by ANSYS FE method.
高温中再生混凝土柱温度反应分析及高温后再生混凝土柱承载力有限元理论分析计算。
The floodgate walls act as concrete projects of big volume subjected to hostile environments, such as high temperature and high dampness and pose a high anti-seeping and anti-leaking demand.
水闸墙体为高温高湿环境下的大体积混凝土工程，防渗、防漏要求高。
After high temperature, cooling and then standing for a certain length of time, the main mechanical properties of concrete will be changing along with standing time.
混凝土经高温、冷却并静置若干时间后，其主要力学性能指标将随着静置时间发生变化。
Now, the construction technique of rolled concrete dam with high temperature condition is one of the most attended research subjects by the domestic and foreign RCC constructers.
高温条件下碾压混凝土坝(RCC)施工技术已成为国内外从事RCC工作者最受关注的研究课题之一。
It analyzes the effects of the fiber on the concrete, and on its high temperature stability.
文中分析了纤维在混凝土中所起的作用，并阐述了纤维对沥青混合料高温稳定性的影响。
The humid environment is advantageous to the strength recovery of concrete damaged by high temperature.
潮湿环境有利于高温损伤混凝土强度的恢复。
Because high surrounding temperature and large wind force cause fast water losing of concrete surface, cracks occur easily on concrete surface during construction.
施工期间，环境温度较高，风力较大，混凝土表面失水过快，容易产生裂缝。
A calculation formula of strength of concrete subjected to sub-high temperature was presented.
通过试验还给出了亚高温下混凝土受压强度的计算公式。
With the increasing applications of large span, high-rising or thin-walled concrete structures at present, temperature action often calls reletively high stresses.
阐述了混凝土的收缩作用和温度作用，并提出了在工程实践中进行裂缝控制的措施。
All over the world, temperature-controlled concrete is used to build large-sized dykes and grout large-scale bases of high-rise buildings.
世界各地大型水坝的建造和高层建筑基础的浇注需要采用温控混凝土。
The invention discloses a device for preventing high temperature caused by welding metal embedded parts from burning out concrete base layers and a method thereof.
本发明公开了避免金属预埋件焊接高温烧坏混凝土基层的装置和方法。
The invention discloses a device for preventing high temperature caused by welding metal embedded parts from burning out concrete base layers and a method thereof.
本发明公开了避免金属预埋件焊接高温烧坏混凝土基层的装置和方法。
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