hydration heat

Concrete shrinkage include: the early stage of plastic shrinkage and hardening of the early hydration heat and cold and dry shrinkage two parts.

混凝土的早期收缩包括：塑性阶段的收缩和硬化初期的水化热冷缩与干燥收缩两部分。

Study on the Hydration Heat Evolved Rate of Fly Ash Cement Containing Calcium Lignosulphonate-Sodium Bicarbonate

掺木钙-碳酸氢钠的粉煤灰水泥水化放热的研究

The results demonstrated that the hydration heat was one of the main reasons which caused the early cracks in the web of box girder.

结果表明：水化热是使箱梁腹板产生早期裂缝的主要原因之一。

This paper introduces the features of the concrete, analyzes the types of concrete cracks, and sums up the causes of and control measures for the concrete cracks from the aspects of contraction crack, temperature crack and hydration heat crack.

介绍了混凝土的特性，分析了混凝土裂缝的种类，分别从收缩裂缝、温度裂缝、水化热裂缝等方面总结了混凝土裂缝产生的原因及其控制措施。

Its primary factor is the temperature distortion and the concrete shrinkage strain which the cement hydration heat produces.

产生裂缝的原因很多，其主要因素是水泥的水化热产生的温度变形和混凝土的收缩变形的共同作用。

The hydration heat of this test with the mixture ratios is lower than normal concrete significantly. As the table 5-12.

试验用配合比明显比普通混凝土水化热低（表5-12）。

Analysis on Temperature Stress Caused by Hydration Heat and Crack Control of Shear Walls

墙体的水化热应力分析与裂缝控制

It is a good way for improving crack-resistance performance of cement to decrease the content of alkali and C3A as well as hydration heat, to replace the clinker particle less than 3 μ m in concrete by mineral admixture which particle is below 3 μ m.

高强、早强但1d强度适中，低碱、低C3A、低水化热，用粒度小于3μm的混合材替代水泥中的熟料<3μm的颗粒等是改善水泥抗裂性的好途径。

On the basis of the new theory of heat conduction equation considering the chemical reaction rate of concrete, the temperature field caused by hydration heat in massive concrete walls is analyzed, and the analytical iterative solution to the nonlinear heat conduction equation is presented.

根据已提出的考虑混凝土化学反应速率的热传导方程新理论，分析了水化热引起的大体积混凝土墙的温度场，给出了该问题非线性热传导方程的解析迭代公式。

According to field survey thermal stress incurred by hydration heat may induce temperature cracking in PC box-girder.

实测数据显示水化热温度应力可能导致混凝土结构开裂。

Thermal crack is the main form of the crack of mass concrete. To control the thermal crack, the simulation analysis on hydration heat of mass concrete and crack control during construction process become an important research subject.

温度裂缝是大体积混凝土裂缝的主要存在形式，为控制温度裂缝，对大体积混凝土在施工过程中的水化热进行仿真分析与裂纹控制就成为一个重要的研究课题。

The crocks result from hydration heat were investigated on the background of a large pool. Theoretic calculation and finite element method were used respectively to analyzed the pool temperature cracks and results of two methods are in one accord.

以某大型工业水池的水化热温度裂缝为工程研究背景，分别使用一般计算和有限元分析这两种方法对该水池的裂缝产生原因进行分析，一般计算结果与有限元计算结果相近。

Relation Between Ionic Polarization and the Hydration Heat of Ions

离子极化与离子水合热的关系

Massive muddy in winter and hydration heat of concrete construction.

冬季大体积溷凝土施工及水化热处理。

According to the temperature dropping curves of hydration heat, authors also consider the equivalent temperature variation of thermal stress due to the hydration reaction of the cement.

考虑一般情况下的水化热降温曲线，求得构件在水化热反应过程中温度应力的等效温差。

Influence of new super setting retarder on hydration heat generation reaction of portland cement

新型超缓凝剂对水泥水化热的影响研究