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水泥穩(wěn)定碎石基層冬季施工采取三種措施

來(lái)源：http://www.shyy66.com/ 日期：2022-12-21

對(duì)于濟(jì)南水泥穩(wěn)定碎石基層冬季施工采取了一下三種措施：一是覆蓋保溫；二是添加早強(qiáng)劑，并及時(shí)碾壓；三是混合料配合比中增加水泥用量。下面廠家為您講解。

For the winter construction of Jinan cement stabilized macadam base, the following three measures have been taken: first, covering and thermal insulation; Second, add early strength agent and roll in time; Third, increase the amount of cement in the mix proportion of the mixture. The manufacturer will explain it to you.

1、覆蓋保溫

1. Covering insulation

水泥穩(wěn)定碎石鋪壓后在其表面及時(shí)覆蓋黑色塑料布，在塑料布上覆蓋草苫，以達(dá)到保溫效果

After the cement stabilized macadam is paved and compacted, its surface shall be covered with black plastic cloth in time, and the plastic cloth shall be covered with straw to achieve thermal insulation effect

2、添加早強(qiáng)劑

2. Add early strength agent

對(duì)于濟(jì)南水泥穩(wěn)定碎石，與水泥混凝土添加早強(qiáng)劑的道理一樣。當(dāng)水泥穩(wěn)定碎石拌合時(shí)，水泥水化放出熱量，使混合料溫度升高，當(dāng)運(yùn)抵現(xiàn)場(chǎng)進(jìn)行攤鋪碾壓過(guò)程中，因?yàn)榇髿鉁囟鹊?，混合料的溫度下降很快，水泥穩(wěn)定碎石強(qiáng)度形成需要一定時(shí)間，在這一定時(shí)間內(nèi)如何保證水泥穩(wěn)定碎石形成一定強(qiáng)度。

For Jinan cement stabilized macadam, it is the same as adding early strength agent to cement concrete. When the cement stabilized macadam is mixed, the cement hydration will release heat, which will increase the temperature of the mixture. When the mixture is transported to the site for paving and rolling, the temperature of the mixture will drop quickly due to the low temperature of the atmosphere. The strength of the cement stabilized macadam will take a certain time to form. How to ensure that the cement stabilized macadam will form a certain strength within this time.
濟(jì)南水泥穩(wěn)定碎石

除了覆蓋保溫養(yǎng)生外，我們應(yīng)該使水泥穩(wěn)定碎石的強(qiáng)度盡快形成，充分利用水泥水化產(chǎn)生的熱量。所以在混合料中加入早強(qiáng)劑，施工組緊密，盡快完成攤鋪、碾壓，使混合料盡早形成強(qiáng)度。

In addition to covering and heat preservation, we should make the strength of cement stabilized macadam form as soon as possible, and make full use of the heat generated by cement hydration. Therefore, early strength agent shall be added to the mixture, the construction team shall be close, paving and rolling shall be completed as soon as possible, so that the mixture can form strength as soon as possible.

3、增加水泥用量

3. Increase cement consumption

水泥穩(wěn)定碎石施工及養(yǎng)護(hù)過(guò)程中，溫度高高低低交替作用，晚上溫度低，白天溫度高，這就勢(shì)必造成水泥穩(wěn)定碎石強(qiáng)度形成中受到損失。所以采取比平時(shí)水泥用量大1.0～1.5%的方法來(lái)彌補(bǔ)這些強(qiáng)度損失。

During the construction and maintenance of cement stabilized macadam, the temperature is high, high and low alternately. The temperature is low at night and high during the day, which will inevitably cause loss in the strength formation of cement stabilized macadam. Therefore, the method of using 1.0~1.5% more cement than usual is adopted to compensate for these strength losses.

另一方面在水泥反應(yīng)過(guò)程中要放出一些熱量，水泥含量越高，放出的熱量也越多，降低水泥標(biāo)號(hào)，增加水泥用量，增加水泥水化的熱量，以利于水泥穩(wěn)定碎石冬季施工的溫度提高。

On the other hand, some heat shall be released in the cement reaction process. The higher the cement content is, the more heat will be released. Reduce the cement grade, increase the cement consumption, and increase the heat of cement hydration, so as to improve the temperature of cement stabilized macadam construction in winter.

因?yàn)樵诠羰┕ぶ?，天氣氣溫低，混合料失水慢，?qiáng)度形成慢，所以增加水泥用量不會(huì)造成水泥穩(wěn)定碎石強(qiáng)度形成過(guò)程中的收縮開(kāi)裂。

During the attack construction, the weather temperature is low, the mixture loses water slowly, and the strength is formed slowly. Therefore, increasing the amount of cement will not cause shrinkage cracking during the strength formation of cement stabilized macadam.

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