1. GRC products are generally thin-walled and low water cement ratio, and have larger surface area for GRC hanging board. Therefore, an effective maintenance system should be adopted to meet the following requirements:

（1） 有合适的早强以利脱模和搬运；

(1) Have appropriate early strength to facilitate demoulding and handling;

（2） 保证设计强度；

(2) Ensure the design strength;

（3） 限制收缩以防开裂。

(3) Limit shrinkage to prevent cracking.

2、脱模前与脱模时:

2. Before and during demoulding:

在修饰后，通常用洁净而优良的聚乙烯薄膜将模具包住，这是防止GRC构件中所含水分的蒸发和受到风的影响，同时也有助于保持水化热。

After modification, the mold is usually wrapped with clean and excellent polyethylene film, which prevents the evaporation of moisture contained in GRC components and the influence of wind, and also helps to maintain the heat of hydration.

在养护的初期应使GRC制品有足够的强度，使之在脱模与搬运时不致受到损伤。在澳大利亚某些地区需要对GRC制品通宵加热，使温度保持在15℃以上。

In the early stage of curing, GRC products should have enough strength to avoid damage during demoulding and handling. In some areas of Australia, GRC products need to be heated overnight to keep the temperature above 15 ℃.
                

3、GRC构件主要养护:

3. Main maintenance of GRC members:

此主要养护阶段是使脱模后的GRC制品继续得到保护，免受日光、风与空气低湿度的影响，一般情况下仍用塑料薄膜包住GRC制品以免受到阳光的直接照射。通过喷湿雾也可保持局部的湿度。

The main maintenance stage is to protect GRC products after demoulding from the influence of sunlight, wind and low humidity of air. Generally, GRC products are still covered with plastic film to avoid direct sunlight. Local humidity can also be maintained by spraying wet fog.

4、然后养护:

4. Then curing:

当制品在存放与使用时，其周围与养护阶段有明显差异时，采取有控制的后养护是必要的。这可以采取一些简单的方法使制件在存放过程中免受阳光的。

When the products are stored and used, and there are obvious differences between the surrounding and curing stages, it is necessary to adopt controlled post curing. This can take some simple ways to protect the parts from the sun during storage.