The temperature control measure and the corresponding norm have been applied in the actual construction. In the construction of past 2 years, nearly no crack appeared in the fast pouring concrete dam.Qiang SLiu M. Z.Zhu Z. Y.Fan J. M....
for the initial temperature at the interface between old and newly poured concrete.A quantitative relationship between the main parameters,such as density,specific heat capacity,element size and temperature,was obtained.This provides a theoretical basis to explain the empirical values and allows accurate...
Freshly placed concrete exerts pressure on formwork during the placing operation. It is influenced by the rate of placing and the air temperature. For instance, if the concrete pouring rate is too slow, setting of concrete starts to take place. As a result, the concrete at the...
The concrete temperature should be a minimum of 65°F and a maximum of 90°F unless approved by the grout manufacturer. If the concrete temperature is below 65°F or above 90°F, build a temporary environmental control structure around the machine. View chapterExplore book Introduction Zhu Bo...
(B) to reduce the temperature of the folded section of the concrete tensile stress, concrete pouring time to choose a day when the minimum temperature of pouring, the concrete strength to meet the design requirements of strength, according to the order of symmetry of tension, grouting. After ...
The utilization of cooling pipes is another approach as pipes are pre-installed into the pouring area and allow for complete control over the concrete elements’ temperature. Keeping the temperature gradient minimal in a mass element is key to achieving a durable concrete structure. How to ...
In order to reduce the surface temperature of the concrete cracks, concrete slab foundation and expand the use of continuous casting method of slope-style thin pouring over each layer thickness control in less than 40cm in order to take full advantage of cooling the concrete level. 翻译结果2复...
• Concrete Pouring • Metal Processing • Food • Drug • Household, Industrial, Aerospace • Cold Chain Transportation • Car Market • Animal Husbandry • Supermarket SPECIFICATIONS K Type T Type J Type Temperature Unit...
Benefits of concrete curing Concrete curing is an important quality control and quality assurance aspect of all concrete structures. You need to ensure adequate control of moisture and favorable temperature of during concrete pouring. Curing in the right manner will prevent concrete from having excessive...
is the very strict, and the free zone is relatively loose (Figure7(a)). For the cooling measures of concrete, it is carried out according to the simultaneous cooling method to reduce the mutual restraint between the pouring layers. Then, the risk of cracking can been reduced (Figure7(b)...