PURPOSE: To adequately control the temp. for kneading concrete by supplying liquified gas by a special technique into the concrete. ;CONSTITUTION: The necessary amt. W0(kg) of the liquefied gas to be supplied is set by equation 1 at the time of starting placement. In the equation 1, W...
. The end of the dormant period is typically characterized by the initial set. Phase III and IV: Strength Gain In this phase, the concrete starts to harden and gain strength. The heat generated during this phase can last for multiple hours and is caused mostly by the reaction of the ...
Thermal actions have frequently been related to the cracking of concrete bridges. During the paving of hot-mix asphalt (HMA) on the bridge deck, a high temperature gradient will generate through the depth of the concrete box-girder, which may cause cracks in the bridge deck. Up to date, li...
This paper provides a "state-of-the-art" review of the pertinent properties of concrete at temperatures lower than 165 °C that make it amenable for direct containment of liquefied natural gas (LNG). In addition, the paper presents a brief historical and economic perspective on cryogenic concret...
P. Clegg, in Innovation for Energy Efficiency, 1988 THERMAL COMFORT At the construction stage a number of temperature sensors were installed in, and underneath, the concrete floor slabs of one control house and one superinsulated house. Long term observations of these sensors show the super...
16.The Analysis of the Impact of Temperature Load on the Arch Rib Alignment of the Concrete-filled Steel Tube Arch Bridge温度荷载对钢管混凝土拱桥拱肋安装线形的影响分析 17.closed temperature measuring device封闭式温度测量装置 18.Thermometers are filled with fluids such as toluene or alcohol.温度计...
set and experimental technology for investigating the mechanical behaviour of concrete at elevated temperature, the configulation and construction of two furnaces ( 20°-90℃), and the test results of four kinds of concrete with different coarse aggregates and strength grades. Five series of tests...
Next, the primary coverage which works by secretary - - manages the article, manages the meeting, the management is the center, works the concrete business from enterprise secretary and institution secretary to launch, in which by the most representative investigation and study, the information work...
Zhenhai Guo, Xudong Shi, in Experiment and Calculation of Reinforced Concrete at Elevated Temperatures, 2011 Publisher Summary This chapter presents a theoretical analysis of the temperature field in a concrete member. In order to solve the two-dimensional temperature distribution on a section of the...
to the maximum value theoretically. From another perspective, the size of the area circled by the cycle decides the level of cycle efficiency. Certainly, it cannot realize such an ideal Carnot cycle for a real ORC. The shape style should change and depends on the concrete characteristic of ...