混凝土早强剂

来源：发表时间2011-12-16 11:03:06 点击：

混凝土早强剂
Hardening accelerator

一、 适用范围
适用于冬季施工的建筑工程及常温和低温条件下施工有早强要求的混凝土工程。使用本产品可缩短工期，提高产量，提高模板和场地周转率，尤其适用于冬季预制场和农村建房。
二、 主要性能
1 、本产品的特点是早强和增强效果显著，价格便宜，使用方便。
2 、产品为灰色粉剂，无毒、无臭、不燃，对钢筋无锈蚀作用。提高混凝土后期强度。
3 、冬季施工时掺入 2.5 % 的该产品，可使混凝土早期强度明显提高，其一天抗压强度可提高 60% 以上，三天抗压强度提高 45% 以上，七天抗压强度提高 25% 以上，二十八天抗压强度提高 10% 以上。
三、掺 MNC-N 型早强剂混凝土性能指标

检验项目		企　标	检验结果
泌水率（ % ）		≤ 100	90
凝结时间之差（ min ）	初凝	-90 ～ +90	-30
凝结时间之差（ min ）	终凝	-90 ～ +90	-35
抗压强度比（ % ）	1d	≥ 160	168
	3d	≥ 145	150
	7d	≥ 125	130
	28d	≥ 110	115
收缩率比 (%)	28d	≤ 135	130
注：检测掺量 2.1%

四、 推荐掺量
本产品掺量范围为 2.1% ，推荐掺量为 2.1% （以水泥用量计）。
五、 使用方法
1 、本产品为粉剂产品，可与水泥一起加入搅拌机，但计量要准确。
2 、为了搅拌均匀，应延长搅拌时间 30 秒。
六、 包装、运输、贮存
1 、粉剂采用内衬塑料袋，外编织袋包装。每袋净重 25Kg ± 0.13kg 或 50kg ± 0.25kg 。
2 、运输时谨防遇锋利物，以免破包受潮，若受潮结块，重新烘干粉碎后使用。
3 、粉剂应贮存在通风、干燥的专用仓库内，有效期为二年，超过有效期经检测合格后仍可使用。

MNC-N Accelerator

APPLICATION

It can be applied to early-strength concrete construction projects that are launched in winter,at ambient or low temperature.Recovery period can be cut shor.As the result,efficiency will be accelerated and modulus & site will be fully utilized.Suitable for construction of pre-cast site and countryside house erection.

PROPERTIES,FEATURES & CHARACTERISTICS

1. As accelerator and strength enhancer,it is practical and easy to handle.

2. Appearance:Grey powdery agent.Non-poisonous,odorless,non-flammable,and non-corrosive to steel bars.Intended for the acceleration of treminal strength of concrete.

3. Preliminary strength of concrete can be apparently accelerated when it is added at 2.5% in winter.The strength increase exceeds 60%,45%,25% and 10% on the 1 st day,3 rd day ,7 th day and 28 th day respectively.

PARAMETERS & ACCEPTANCE CRITERIA(FOR REFERENCE)

Parameters		Criteria	Actual Results
Water penetration,%		≤ 100	90
Temporal distribution for setting,min	Initial setting time	-90 ～ +90	-30
Temporal distribution for setting,min	Terminal setting time	-90 ～ +90	-35
Compression strength,%	1d	≥ 160	168
	3d	≥ 145	150
	7d	≥ 125	130
	28d	≥ 110	115
Shrinkage,%	28d	≤ 135	130
Note:Standard Blend Dosage:2.1%

RECOMMENDED BLEND DOSAGE

The blend dosage normally ranges between 2 .1 %.The standard blend dosage is established at 2.1%(as cement amount).

DIRECTIONS

1. The powdery agent can be agitated together with cement.Accurate measurement is essential.

2. A 30-second agitation is required to achieve to achieve good homogeneity.

PACKGING,TRANSPORTATION AND STORAGE

1. Woven fabric bag with plastic liner.Net weight: 25kg ±0.13 or 50kg ± 0.25.

2. Cautions should be taken to prevent from being torn by sharp-ended objects while packages are transferred or delivered.In case of humidity contamination,re-use is allowed after drying and crushing.

3. It should be stored in a deicated warehouse that is well-ventilated and dry.It remains effective in two years.At the expiration,re-use is allowed if the testing results fall within the established range.

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