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    施工过后环氧地坪伸缩缝的处理方法有哪些

    2018-11-02 07:39:12 无锡盛发地坪科技有限公司 阅读

    众所周知,环氧地坪完工后的效果是整体无缝的。所以在施工环氧地坪时,需要先处理混凝土地面的一些伸缩缝。无论施工环氧地坪涂层的材料质量多好,过了一年,经历热胀冷缩,如果原混凝土地面出现开裂的情况,则附在上层的环氧地坪层也会开裂。因此在环氧地坪涂料涂装时,环氧地坪施工单位需与业主协商,对混凝土伸缩缝进行适当的处理,以达到双方均预期和可接受的效果,以避免工程质量纠纷。

    As we all know, the effect of the epoxy floor is seamless after completion. Therefore, when constructing epoxy floor, we need to deal with some expansion joints of concrete floor. No matter how good the material quality of the epoxy floor coating is, after one year, the epoxy floor coating will crack if the original concrete floor cracks. Therefore, when coating the floor coating, the floor construction unit should consult with the owner to deal with the concrete expansion joint properly, so as to achieve the expected and acceptable effect of both sides, so as to avoid engineering quality disputes. 

    01环氧树脂砂浆填充

    Epoxy resin mortar filling

    环氧地坪漆涂装时,用环氧树脂砂浆类(应是无溶剂产品)刚性物质将伸缩缝进行填充,然后按照地坪施工工艺进行涂装。

    When epoxy floor paint is applied, expansion joints are filled with rigid materials of epoxy resin mortar (which should be solvent-free products), and then coated according to floor construction technology.

    如果业主允许地面存在均一平直的伸缩缝,则可在地坪涂装完毕后用切割机在原伸缩缝位置切割2-5毫米宽的伸缩缝,给混凝土留下伸缩的空间,可避免日后地面出现不均一的裂缝和减少地坪涂层沿裂缝起壳的现象。通常只有在地面装饰要求不高的场合,这种方式才能为业主所接受。

    If the owner permits the existence of uniform and straight expansion joints on the ground, the expansion joints 2-5 mm wide can be cut by the cutter at the original expansion joints position after the painting of the ground, leaving expansion space for the concrete, which can avoid uneven cracks on the ground and reduce the phenomenon of crust formation along the cracks of the ground coating in the future. Usually only when the floor decoration requirements are not high, this way can be accepted by the owners.

    缺点:因为环氧树脂砂浆类刚性物质没有弹性,抵抗不了混凝土因为热胀冷缩反应时收缩的压力,容易导致伸缩缝处或附近的环氧地坪涂层出现开裂和起壳现象。

    Disadvantage: Because the rigid material like epoxy mortar is inelastic, it can not resist the shrinkage pressure of concrete due to thermal expansion and cold contraction reaction, which easily leads to cracking and shelling of the epoxy floor coating at or near the expansion joint.

    02弹性胶填充

    Elastic glue filling

    环氧地坪漆涂装时,采用弹性物质将伸缩缝进行填充补平,然后涂装中涂层和面漆。

    When epoxy floor paint is applied, elastic material is used to fill and flatten expansion joints, and then coatings and topcoats are applied.

    具体操作如下:

    The specific operation is as follows:

    首先检验各伸缩缝,

    First, check the expansion joints.

    1)对于宽度在5mm以上的伸缩缝:将缝内杂物清理干净,然后配好弹性胶进行填充并刮平;

    1) For expansion joints with a width of more than 5 mm: clean up the debris in the joints, then fill them with elastic glue and scrape them flat.

    2)对于宽度小于5mm的伸缩缝:由于缝太细不易填充,需先用切割机切割达到一定宽度和深度(深度在1mm以上比较好)的梯形状,需保证切割整齐,然后才能管住弹性胶。

    2) For expansion joints with width less than 5 mm: because the seams are too thin to be filled, it is necessary to use a cutting machine to cut the ladder shape with a certain width and depth (the depth is better than 1 mm). It is necessary to ensure that the cutting is neat, and then the elastomer can be managed.

    弹性胶填充方法:采用玻璃枪(打胶枪)填充,缝隙填满后,用铲刀刮平并去除多余胶料,弹性胶填充需有一定的深度,填充前缝隙内的灰尘等杂物应清楚干净,否则易出现弹性胶与混凝土附着不牢而脱离的现象。胶料干燥后即可进行后续涂装作业。

    Elastic glue filling method: glass gun (glue gun) is used to fill the gap. After filling the gap, scrape and remove the excess glue with a spade. Elastic glue filling needs a certain depth. The dust and other debris in the filling front gap should be clear and clean. Otherwise, it is easy to appear the phenomenon that elastic glue and concrete are not firmly attached and separated. After the drying, the coating can be carried out.

    这种处理方式和第一种方式相比,由于弹性胶分散混凝土收缩而形成的应力,伸缩缝上涂层开裂的可能性大大降低,地面整体上颜色一致,但由于弹性胶上的涂层仍为刚性的,当混凝土收缩较剧烈是,弹性胶上的环氧地坪层(中涂层和面漆)仍有可能开裂,但裂缝不会很大。

    Compared with the first method, because of the stress caused by the shrinkage of elastic glue dispersing concrete, the possibility of cracking of the coating on the expansion joint is greatly reduced, and the overall color of the ground is the same. However, because the coating on the elastic glue is still rigid, when the shrinkage of concrete is more severe, the epoxy floor layer on the elastic glue is ( The middle coat and top coat may still crack, but the cracks will not be large.

    03聚氨酯弹性胶填充

    Polyurethane elastic glue filling

    在环氧地坪涂料涂装时,先尽量将伸缩缝留着,即使覆盖,也应记录下所在位置,然后再地坪涂装完毕后,将伸缩缝切割修饰整齐,保证宽度在5mm以上,最好修饰成上宽下窄的梯形状,然后清除干净缝内的灰尘及杂物,贴缝两边贴上胶带,采用聚氨酯弹性交填充缝隙直且平直,在弹性胶半干状态撕去胶带。

    When coating epoxy floor coatings, first try to keep the expansion joints, even if covered, it should also record the location, and then after finishing the floor coating, cut the expansion joints neatly to ensure the width of more than 5 mm, preferably modified into a narrow ladder shape, and then clean up the dust and debris in the joints, two seams. Adhesive tape is put on the edge, and polyurethane elastic cross-filling is used to fill the gap straight and straight, and the tape is torn off in the semi-dry state of elastic adhesive.

    这种处理方法在洁净度及美观程度要求较高的电子厂、制药厂、精密仪器制造厂常被采用,可基本避免伸缩缝处地坪涂层的开裂现象,也比较美观,缺点是由于目前聚氨酯弹性胶的颜色比较少(一般为草绿色及铁红色),不易达到整体地坪涂层的颜色一致,同时随着混凝土的热胀冷缩,聚氨酯弹性胶也会随之出现凸起和凹陷的现象。

    This treatment method is often used in electronic factories, pharmaceutical factories and precision instrument factories with high requirements for cleanliness and aesthetics. It can basically avoid cracking of floor coating at expansion joints and is more beautiful. The disadvantage is that the color of polyurethane elastomer is relatively small (usually grass green and iron red), so it is not easy. At the same time, with the thermal expansion and cold shrinkage of concrete, polyurethane elastomer will also appear bulge and depression.

    04粘贴玻璃纤维布

    Paste fiberglass cloth

    局部的地面伸缩缝,也常采用铺贴玻璃纤维布以增强抗裂性的方法,施工方式是:先用环氧砂浆材料将伸缩缝填充平整,然后涂上底涂材料,再粘贴宽度10mm左右的玻璃纤维布1-2道,接下来滚涂中涂材料,面漆等。

    Local ground expansion joints are often covered with fiberglass cloth to enhance crack resistance. The construction method is: first fill the expansion joints with epoxy mortar, then coat with primer material, then paste 1-2 channels of fiberglass cloth with width of about 10 mm, and then roll coating with materials, topcoat and so on.

    这种方法既能保证地面整体颜色一致,还能抵御混凝土收缩引起的开裂,但是如果地坪涂层的设计厚度过薄时,不易操作,易出现贴布处地面高于其他处的现象。所以至少是2mm以上的环氧地坪才能采用这种方案。

    This method can not only ensure that the overall color of the ground is the same, but also resist the cracking caused by concrete shrinkage. But if the design thickness of the floor coating is too thin, it is not easy to operate, and it is easy to appear the phenomenon that the ground is higher than other places. So at least 2mm above the epoxy floor can be used in this program.

    总之,在环氧地坪涂料涂装时,对伸缩缝的处理应加以重视,至于采用哪种处理方式,需要根据地面的具体情况,再与甲方协商,一致决定。

    In short, in the epoxy floor coating, attention should be paid to the treatment of expansion joints. As for which treatment method should be adopted, it is necessary to consult with Party A and decide unanimously according to the specific conditions of the ground.


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