Method for constituting model for predicting thermal diffusivity of normal concrete along with development of age

A common concrete and predictive model technology, applied in the field of concrete construction, can solve problems such as thermal conductivity and temperature field deviation without consideration
CN101609084AInactive Publication Date: 2009-12-23HOHAI UNIV
0 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HOHAI UNIV
Publication Date
2009-12-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for constituting a model for predicting the thermal diffusivity (alpha) of normal concrete along with the development of age (t). The invention studies the change rule of the thermal diffusivity (alpha) of the concrete with different water-cement ratios, admixtures, cement types, sand ratios and aggregate contents along with the development of the age (t), and establishes the model for predicting the thermal diffusivity (alpha) of the normal concrete along with the development of the age (t) according to the common rule of the thermal diffusivity (alpha) of the concrete along with the development of the age (t) under the different working conditions. The model is shown in a formula (as in the drawing). In the formula, alpha (t) is the value of the thermal diffusivity of the concrete at the age of t and has a measurement unit of m / h; and alpha (t) is the value of the thermal diffusivity of reinforced concrete and has a measurement unit of m / h; and t is the age and is measured by hour. The model can well represent the change rule of the thermal diffusivity (alpha) of the normal concrete along with the development of the age (t).
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for predicting the thermal conductivity of ordinary concrete changing with age, and belongs to the field of concrete construction. Background technique

[0002] In the field of civil engineering, many different computational models have been developed to predict the temperature and stress distribution of hardening concrete. Regardless of the use of a simple one-dimensional or complex three-dimensional heat conduction calculation model, the key thermal performance parameter required in the calculation - the temperature conductivity coefficient is a function of time. If the characteristics of the thermal conductivity with the age development are not considered in the simulation calculation of the early temperature field of concrete, the calculated temperature field will deviate from the actual situation. Therefore, only by finding out the change law of thermal conductivity with age and proposing a reliable prediction mo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More