CN100351478C - 防止保温材料表面抹灰裂缝的方法 - Google Patents

防止保温材料表面抹灰裂缝的方法 Download PDF

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CN100351478C
CN100351478C CNB2005100556259A CN200510055625A CN100351478C CN 100351478 C CN100351478 C CN 100351478C CN B2005100556259 A CNB2005100556259 A CN B2005100556259A CN 200510055625 A CN200510055625 A CN 200510055625A CN 100351478 C CN100351478 C CN 100351478C
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cement mortar
material surface
heat insulation
insulation material
layer
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CN1648367A (zh
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马国栋
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Hebei Jinduo Construction Engineering Co ltd
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Abstract

本发明公开了一种防止保温材料表面抹灰裂缝的方法，步骤为：1)在水泥砂浆中掺加重量比为0.2～0.3%的短切纤维；2)在所述加入短切纤维的水泥砂浆中掺加重量比为2～5%的抗裂剂，搅拌均匀后，抹在保温材料表面；3)在所述水泥砂浆层的表面压入一层网格布；4)所述压入网格布的水泥砂浆层终凝后，在其表面抹一层2～3mm的具有一定的柔性的聚合物水泥砂浆；5)在所述聚合物水泥砂浆层的表面再压入一层网格布后，再抹上1～2mm的聚合物水泥砂浆。本发明通过在水泥砂浆中添加一定比例的抗裂剂，并复合上网格布层，达到了防止保温材料表面抹灰裂缝的产生目的。

Description

防止保温材料表面抹灰裂缝的方法
技术领域
本发明涉及一种建筑施工技术中，防止墙体保温层外抹灰而产生裂缝的方法。
背景技术
钢丝网架聚苯板目前主要用于建筑工程外墙外保温，其使用方法分内置和外挂两种。无论是内置还是外挂，其表面均需分层抹厚度为2.5cm左右、强度等级为10Mpa的水泥砂浆。一方面是找直、找平，另一方面是便于室外装修。上述水泥砂浆终凝3天后，逐渐产生无规则裂缝，而且随着时间的延长，裂缝变宽、变多、变长。这一问题已成为钢丝网架聚苯板表面抹灰的质量通病，目前还没有较好的解决方法。
发明内容
针对上述存在的问题，本发明的目的在于提供一种防止保温材料表面抹灰裂缝的方法，可以避免裂缝的产生。
为实现上述目的，本发明一种防止保温材料表而抹灰裂缝的方法的具体步骤如下：
1)在水泥砂浆中掺加重量比为0.2～0.3％的短切纤维；
2)在所述加入短切纤维的水泥砂浆中掺加重量比为2～5％的抗裂剂，搅拌均匀后，抹在保温材料表面；
3)在所述水泥砂浆层的表面压入一层网格布；
4)所述压入网格布的水泥砂浆层终凝后，在其表面抹一层2～3mm的具有一定的柔性的聚合物水泥砂浆；
5)在所述聚合物水泥砂浆层的表面再压入一层网格布后，再抹上1～2mm的聚合物水泥砂浆。
进一步地，所述网格布为标准型涂塑耐碱玻璃纤维网格布。
进一步地，所述抗裂剂为SK-W52型抗裂剂。
进一步地，所述聚合物水泥砂浆为SK-W51型聚合物水泥砂浆。
进一步地，所述短切纤维为0.8～1.0cm长的聚丙烯纤维。
本发明通过在水泥砂浆中添加一定比例的抗裂剂，并复合上网格布层，达到了防止保温材料表面抹灰裂缝的产生目的。
具体实施方式：
实施例1
某高层住宅楼，建筑面积25000m2，保温面积12000m2，采用内置钢丝网架聚苯板，具体施工如下：
1)32.5Mpa曲寨普通水泥1份，正定中砂4份，0.8～1.0cm长的聚丙烯纤维0.2％(与水泥砂浆的重量百分比)，搅拌均匀；
2)在加入短切纤维的水泥砂浆中掺加重量比为4％的SK-W52型抗裂剂，水适量，搅拌均匀后，抹灰两遍，第一遍1.5cm左右，第二遍1cm左右，SK-W52型抗裂剂由河北金舵建材科技开发有限公司研制生产，为粉剂，具有防水、抗裂、粘结强度高、耐久性好、对钢筋无锈蚀的特点；
3)当第二遍抹完后，压入一层标准型涂塑耐碱玻璃纤维网格布，并用木抹子搓毛；
4)待水泥砂浆终凝后，抹上2～3mmSK-W51型聚合物水泥砂浆，该砂浆由河北金舵建材科技开发有限公司研制生产，为粉剂加水搅拌而成，水灰比为1∶3，具有防水、抗渗、抗冻融性能，不空鼓、不脱落；
5)再压入一层网格布后，抹上1～2mm SK-W51型聚合物水泥砂浆，并用钢抹子压平。
完成工程后4个月，表面没有裂缝。
实施例2
某高层住宅楼，建筑面积27000m2，外保温面积15000m2，工程采用内置钢丝网架聚苯板，具体施工如下：
1)32.5Mpa鼎鑫普通水泥0.9份，西柏坡电厂一级煤灰0.1份，正定中砂4份，0.8～1.0cm长的聚丙烯纤维0.3％(与水泥砂浆的重量百分比)，搅拌均匀；
2)在加入短切纤维的水泥砂浆中掺加重量比为5％的SK-W52型抗裂剂，水适量，搅拌均匀后，抹灰两遍，第一遍1.5cm左右，第二遍1cm左右；
3)当第二遍抹完后，压入一层标准型涂塑耐碱玻璃纤维网格布，并用木抹子搓毛；
4)待水泥砂浆终凝后，抹上2～3mmSK-W51型聚合物水泥砂浆；
5)再压入一层网格布后，抹上1～2mmSK-W51型聚合物水泥砂浆，并用钢抹子压平。
完成工程后5个月，表面没有裂缝。

Claims (5)

1、一种防止保温材料表面抹灰裂缝的方法，其特征在于，步骤如下：
1)在水泥砂浆中掺加重量比为0.2～0.3％的短切纤维；
2)在所述加入短切纤维的水泥砂浆中掺加重量比为2～5％的抗裂剂，搅拌均匀后，抹在保温材料表面；
3)在所述水泥砂浆层的表面压入一层网格布；
4)所述压入网格布的水泥砂浆层终凝后，在其表面抹一层2～3mm的具有一定的柔性的聚合物水泥砂浆；
5)在所述聚合物水泥砂浆层的表面再压入一层网格布后，再抹上1～2mm的聚合物水泥砂浆。
2、根据权利要求1所述的一种防止保温材料表面抹灰裂缝的方法，其特征在于，所述网格布为标准型涂塑耐碱玻璃纤维网格布。
3、根据权利要求1或2所述的一种防止保温材料表面抹灰裂缝的方法，其特征在于，所述抗裂剂为SK-W52型抗裂剂。
4、根据权利要求3所述的一种防止保温材料表面抹灰裂缝的方法，其特征在于，所述聚合物水泥砂浆为SK-W51型聚合物水泥砂浆。
5、根据权利要求4所述的一种防止保温材料表面抹灰裂缝的方法，其特征在于，所述短切纤维为0.8～1.0cm长的聚丙烯纤维。
CNB2005100556259A 2005-03-18 2005-03-18 防止保温材料表面抹灰裂缝的方法 Expired - Fee Related CN100351478C (zh)

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CN106320665A (zh) * 2016-08-18 2017-01-11 成都市易建建筑材料有限公司 预拌干混改性直刮砂浆施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5444322A (en) * 1977-09-13 1979-04-07 Kanebo Ltd Method of executing mortar wall body
CN1587181A (zh) * 2004-07-22 2005-03-02 上海交通大学 聚苯乙烯泡沫颗粒保温砂浆
CN1594772A (zh) * 2004-07-16 2005-03-16 张志峰 新型隔热保温结构及施工工艺

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5444322A (en) * 1977-09-13 1979-04-07 Kanebo Ltd Method of executing mortar wall body
CN1594772A (zh) * 2004-07-16 2005-03-16 张志峰 新型隔热保温结构及施工工艺
CN1587181A (zh) * 2004-07-22 2005-03-02 上海交通大学 聚苯乙烯泡沫颗粒保温砂浆

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
保温墙面裂缝的原因和对策 马红军，马甲，郝勤.长安大学学报(建筑与环境科学版)，第21卷第3期 2004 *
聚丙烯纤维砂浆在工程中的研究与应用 李京玲，罗兆辉.建筑技术开发，第32卷第2期 2005 *

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