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JP3708206B2 - Waterproofing method for floor slabs - Google Patents

Waterproofing method for floor slabs Download PDF

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Publication number
JP3708206B2
JP3708206B2 JP06279596A JP6279596A JP3708206B2 JP 3708206 B2 JP3708206 B2 JP 3708206B2 JP 06279596 A JP06279596 A JP 06279596A JP 6279596 A JP6279596 A JP 6279596A JP 3708206 B2 JP3708206 B2 JP 3708206B2
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Prior art keywords
layer
reinforcing material
thermosetting resin
reinforced thermosetting
fiber reinforced
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JPH09256486A (en
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悟 吉田
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株式会社ダイフレックスホールディングス
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Description

【0001】
【発明の属する技術分野】
本発明は、主として、建築物の屋内外の床スラブの下地全面に、複合被覆防水塗膜層を施工する際、既存の目地部での防水性を強化した、床スラブの防水処理方法に関する。
【0002】
【従来の技術】
従来、伸縮目地部にコーキング材を充填した後、床スラブの下地全面に、複合被覆防水塗膜層を形成することで、床面の防水処置としていたが、繊維強化熱硬化樹脂層を備えているにも拘わらず、伸縮目地部に対応する箇所で、複合被覆防水塗膜層が破壊され、その防水性を損なう場合がある。
【0003】
【発明が解決しようとする課題】
これは、気温、日射などの熱的要因で、下地が挙動する際、膨張・収縮の量が伸縮目地部に集中する結果、その箇所での発生応力に、繊維強化熱硬化樹脂層の強度が耐えられないためである。特に、温度差の激しい屋外の床面では、比較的短期間で、防水破壊が起こる虞がある。
【0004】
本発明は、上記事情に基づいてなされたもので、熱的要因で起こる下地の挙動の際に、膨張・収縮による発生応力に耐えるように、既存目地部に対応する箇所での防水層の強度を高めるようにした、床スラブの防水処理方法を提供することを目的としている。
【0005】
【課題を解決するための手段】
上記目的を達成するため、本発明では、伸縮目地部がある床スラブの下地全面に、高分子組成塗膜物の層と繊維強化熱硬化樹脂層4とを組み合わせた複合被覆塗膜防水層を形成する、床スラブの防水処理方法において、上記既存目地部を跨いで、その両側の床スラブに架橋するように、前記高分子組成塗膜物の層と繊維強化熱硬化樹脂層との間に、所要の強度を有する2枚以上の補強材を積層した繊維強化熱硬化樹脂構造を配設し、前記補強材のうち第1の補強材を、前記高分子組成塗膜物の層に沿って設け、第2の補強材を、前記第1の補強材を覆い、かつ両側部が前記高分子組成塗膜物の層に達するように設けることで、下地の挙動に基づく伸縮目地部付近の防水破壊を防止する。
【0006】
前記補強材の幅は、既存目地部の幅の1.5倍以上であり、少なくとも第2の補強材の幅は、第1の補強材の幅よりも1.5倍〜3倍であることが好ましい。
また、前記繊維強化熱硬化樹脂構造の補強材は、重量が230g/m2 以上のガラスチョップド・ストランド・マットもしくはガラスロービング・クロスであることが好ましい。更に、前記繊維強化熱硬化樹脂構造の樹脂は、JIS:Kー7207:荷重たわみ温度試験で70℃以上、バーコール硬度が50以上を示す不飽和ポリエステル樹脂もしくはビニルエステル樹脂であるとよい。
【0007】
【発明の実施の形態】
本発明では、図1に示すように、床スラブ1、1間に伸縮目地部2(この目地部には、防水に先立って、予め、コーキング材が充填されている)を備えている下地全面に対して、高分子組成塗膜物の層3、繊維強化熱硬化樹脂層4の順序で、複合被覆塗膜防水層が形成されるが、特に、既存目地部2を跨いで、その両側の床スラブ1、1に架橋するように、高分子組成塗膜物の層3と繊維強化熱硬化樹脂層4との間に、所要の強度を有する補強材5a、5bを積層した繊維強化熱硬化樹脂構造5を配設することで、下地1、1の挙動に基づく伸縮目地部2付近の防水破壊を防止するのである。なお、図中、5cは繊維強化熱硬化樹脂構造5の外装面となる熱硬化樹脂層である。また、6はゴムまたは弾性系樹脂モルタルよりなるコーキング材、7はそのバックアップ材である。
【0008】
なお、この場合、補強材は、上述の実施の態様において示すように、少なくとも2枚以上を積層したものであり、その幅は、既存目地部2の幅の1.5倍以上であり、少なくとも2枚目の補強材の幅は、1枚目の幅よりも1.5倍〜3倍であることが好ましい。また、繊維強化熱硬化樹脂構造5の補強部材は、その重量が230g/m2 以上の、好ましくは、300g/m2 以上のガラスチョップド・ストランド・マットもしくはガラスロービング・クロス(厚さ:0.8mm以上)であるとよい。更に、繊維強化熱硬化樹脂構造5の樹脂5cは、70℃(安全率110%として)以上の温度でバーコール硬度が50以上(JIS:Kー7207:荷重たわみ温度試験)である不飽和ポリエステル樹脂もしくはビニルエステル樹脂であるとよい。
【0009】
また、上述の層3を構成する高分子組成塗膜物には、ウレタンゴム系、アクリルゴム系、ゴムアスファルト系などの、好ましくは、JIS K−6301に規定する引っ張り伸び率が400%以上のウレタンゴム(好ましくは厚さ:0.8mm以上)が好ましい。また、繊維強化熱硬化樹脂層4には、例えば、厚さが1.0mm以上の、硬質ウレタン樹脂、エポキシ樹脂、不飽和ポリエステル樹脂、ビニルエステル樹脂などが用いられる。
【0010】
このような構成では、高分子組成塗膜物の層3(緩衝層)は、下地が収縮する(伸縮目地部に対応する箇所での、防水層が引っ張られる方向)場合には、下地の挙動を繊維強化熱硬化樹脂層4に直接伝達しないように機能するが、下地が膨張する(前記防水層が目地部の方向に圧縮される)場合には、発生応力が、上述の高分子組成塗膜物の層3のみでは、緩衝できないが、本発明のように、複数層の補強材を有する繊維強化熱硬化樹脂構造5の働きで、発生応力が分散され、過剰負荷とならないから、繊維強化熱硬化樹脂層4が破壊されるのを防止できる。その結果、長期にわたる熱的な膨張、収縮作用に耐えて、防水性を維持できるのである。
【0011】
なお、夏期の日射などで、熱硬化樹脂層の表面温度が60℃以上に上昇する屋外床面などの場合には、この温度で熱硬化樹脂層5cが変形するのを避けるために、補強材による繊維強化熱硬化樹脂構造5の樹脂層には、熱的に影響されない、前述のような不飽和ポリエステル樹脂またはビニルエステル樹脂が用いられるとよい。
【0012】
【実施例】
次に、本発明に係わる補強材を採用した繊維強化樹脂構造5の有用性について、試験結果を例示して、説明する。即ち、供試体の最初の既存目地部の幅が20mmであり、床スラブ(下地板)1、1を、常温下および加熱状態下で、図2のように、目地部の挙動幅を4.0mm(0mm←→4.0mm/1サイクル)になるように、圧縮方向および引張方向へと稼動し、供試体に不具合(防水破壊)が発生するまでの稼動回数を確認するのである。
【0013】
なお、供試体の仕様は次の通りである。即ち、高分子組成塗膜物の層3にはダイフレックス製ウレタンゴム系防水材:厚み=1.54mm(商品名:DSカラー)が使用され、下地板との間は接着剤で接着する。その上には、接着剤を介して、複数層の補強材(ガラスチョップド・ストランド・マット:#230=重量:230g/m2 、#300=重量:300g/m2 、#450=重量:450g/m2 )および熱硬化樹脂層(RP#300=荷重たわみ温度:70℃以上、RP#1500=荷重たわみ温度:100℃以上)を有する繊維強化熱硬化樹脂構造、並びに、外表面となる繊維強化熱硬化樹脂層(ダイフレックス製FRP:厚み=1.1mm、商品名RP#100とガラスマット#450との組合せ)を積層する。その試験結果は、表1の通りである。
【0014】
【表1】

Figure 0003708206
Figure 0003708206
Figure 0003708206
Figure 0003708206
【0015】
【発明の効果】
本発明は、以上詳述したようになり、伸縮目地部がある床スラブの下地全面に、高分子組成塗膜物の層と繊維強化熱硬化樹脂層とを組み合わせた複合被覆塗膜防水層を形成する、床スラブの防水処理方法において、上記既存目地部を跨いで、その両側の床スラブに架橋するように、前記高分子組成塗膜物の層と繊維強化熱硬化樹脂層との間に、所要の強度を有する補強材を積層した繊維強化熱硬化樹脂構造を配設することで、下地の挙動に基づく伸縮目地部付近の防水破壊を防止することができ、本来の目的である長期間に亘る防水機能を保持できる。
【図面の簡単な説明】
【図1】本発明の実施の形態を説明する模式図である。
【図2】本発明に係わる供試体の模式図である。
【符号の説明】
1 床スラブ
2 既存目地部(伸縮目地部)
3 高分子組成塗膜物の層
4 繊維強化熱硬化樹脂層
5 繊維強化熱硬化樹脂構造
5a、5b 補強材
5c 熱硬化樹脂
6 コーキング材
7 バックアップ材[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a floor slab waterproofing method in which waterproofing at an existing joint is reinforced when a composite covering waterproof coating layer is applied to the entire base of a floor slab inside and outside a building.
[0002]
[Prior art]
Conventionally, after filling a stretchable joint with a caulking material, a composite coating waterproof coating layer was formed on the entire surface of the floor slab, thereby providing a waterproof treatment for the floor surface, but with a fiber-reinforced thermosetting resin layer. In spite of this, the composite-coated waterproof coating layer may be destroyed at the locations corresponding to the expansion joints, and the waterproof property may be impaired.
[0003]
[Problems to be solved by the invention]
This is due to thermal factors such as temperature and solar radiation, and when the base behaves, the amount of expansion / contraction concentrates on the expansion joint, and the strength of the fiber reinforced thermosetting resin layer is affected by the stress generated at that location. It is because it cannot stand. In particular, waterproofing may occur in a relatively short period of time on an outdoor floor surface with a large temperature difference.
[0004]
The present invention was made on the basis of the above circumstances, and the strength of the waterproof layer at a location corresponding to the existing joint portion so as to withstand the stress generated by expansion / contraction in the behavior of the base caused by a thermal factor. An object of the present invention is to provide a waterproofing method for floor slabs.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a composite coated coating waterproofing layer in which a polymer composition coating layer and a fiber reinforced thermosetting resin layer 4 are combined on the entire surface of a floor slab having a stretch joint. In the floor slab waterproofing method to be formed, the layer between the polymer composition coating film layer and the fiber reinforced thermosetting resin layer so as to cross over the existing joint and crosslink to the floor slab on both sides thereof. A fiber reinforced thermosetting resin structure in which two or more reinforcing materials having a required strength are laminated, and the first reinforcing material among the reinforcing materials is disposed along the layer of the polymer composition coating film. And providing the second reinforcing material so as to cover the first reinforcing material and so that both side portions reach the layer of the polymer composition coating film, thereby waterproofing the vicinity of the expansion joint based on the behavior of the base Prevent destruction.
[0006]
The width of the reinforcing material is at least 1.5 times the width of the existing joint, and at least the width of the second reinforcing material is 1.5 to 3 times the width of the first reinforcing material. Is preferred.
The reinforcing material of the fiber reinforced thermosetting resin structure is preferably glass chopped strand mat or glass roving cloth having a weight of 230 g / m 2 or more. Further, the resin having a fiber reinforced thermosetting resin structure is preferably an unsaturated polyester resin or vinyl ester resin having a JIS: K-7207: 70 ° C. or higher load deflection temperature test and a Barcol hardness of 50 or higher.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, as shown in FIG. 1, the entire ground surface provided with an expansion joint 2 between the floor slabs 1 and 1 (this joint is pre-filled with a caulking material prior to waterproofing). In contrast, the composite coating film waterproofing layer is formed in the order of the polymer composition coating layer 3 and the fiber reinforced thermosetting resin layer 4, and in particular, straddles the existing joint 2, Fiber reinforced thermosetting in which reinforcing materials 5a and 5b having a required strength are laminated between the layer 3 of the polymer composition coating and the fiber reinforced thermosetting resin layer 4 so as to crosslink the floor slabs 1 and 1. By disposing the resin structure 5, waterproof breakage in the vicinity of the expansion joint 2 based on the behavior of the bases 1 and 1 is prevented. In addition, in the figure, 5c is a thermosetting resin layer which becomes the exterior surface of the fiber reinforced thermosetting resin structure 5. Further, 6 is a caulking material made of rubber or elastic resin mortar, and 7 is a backup material thereof.
[0008]
In this case, as shown in the above-described embodiment, the reinforcing material is a laminate of at least two or more, and the width thereof is 1.5 times or more the width of the existing joint portion 2, and at least The width of the second reinforcing material is preferably 1.5 to 3 times the width of the first sheet. The reinforcing member of the fiber reinforced thermosetting resin structure 5 has a weight of 230 g / m 2 or more, preferably 300 g / m 2 or more of a glass chopped strand mat or glass roving cloth (thickness: 0.00). 8 mm or more). Further, the resin 5c of the fiber reinforced thermosetting resin structure 5 is an unsaturated polyester resin having a barcol hardness of 50 or more (JIS: K-7207: load deflection temperature test) at a temperature of 70 ° C. (with a safety factor of 110%) or more. Or it is good in it being a vinyl ester resin.
[0009]
In addition, the polymer composition coating film constituting the layer 3 is urethane rubber, acrylic rubber, rubber asphalt, or the like, and preferably has a tensile elongation of 400% or more as defined in JIS K-6301. Urethane rubber (preferably thickness: 0.8 mm or more) is preferable. For the fiber reinforced thermosetting resin layer 4, for example, a hard urethane resin, an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, or the like having a thickness of 1.0 mm or more is used.
[0010]
In such a configuration, the layer 3 (buffer layer) of the polymer composition coated film has a behavior of the base when the base contracts (the direction in which the waterproof layer is pulled at a location corresponding to the expansion joint). Is not directly transmitted to the fiber reinforced thermosetting resin layer 4, but when the base expands (the waterproof layer is compressed toward the joint), the generated stress is applied to the polymer composition coating described above. The film layer 3 alone cannot be buffered, but as in the present invention, the fiber-reinforced thermosetting resin structure 5 having a plurality of layers of reinforcing materials works to disperse the generated stress and prevent overloading. It can prevent that the thermosetting resin layer 4 is destroyed. As a result, it can withstand long-term thermal expansion and contraction and maintain waterproofness.
[0011]
In addition, in the case of an outdoor floor where the surface temperature of the thermosetting resin layer rises to 60 ° C. or more due to solar radiation in summer, etc., a reinforcing material is used to avoid deformation of the thermosetting resin layer 5c at this temperature. For the resin layer of the fiber reinforced thermosetting resin structure 5 according to the above, it is preferable to use an unsaturated polyester resin or vinyl ester resin as described above, which is not thermally influenced.
[0012]
【Example】
Next, the usefulness of the fiber reinforced resin structure 5 employing the reinforcing material according to the present invention will be described with reference to test results. That is, the width of the first existing joint portion of the specimen is 20 mm, and the behavior width of the joint portion is set to 4. as shown in FIG. It is operated in the compression direction and the tensile direction so as to be 0 mm (0 mm ← → 4.0 mm / 1 cycle), and the number of operations until a failure (waterproof failure) occurs in the specimen is confirmed.
[0013]
The specifications of the specimen are as follows. That is, the layer 3 of the polymer composition coating material is a die-flex urethane rubber waterproof material: thickness = 1.54 mm (trade name: DS color), and is bonded to the base plate with an adhesive. On top of that, a plurality of layers of reinforcing material (glass chopped strand mat: # 230 = weight: 230 g / m 2 , # 300 = weight: 300 g / m 2 , # 450 = weight: 450 g are provided via an adhesive. / M 2 ) and a thermosetting resin layer (RP # 300 = deflection temperature under load: 70 ° C. or more, RP # 1500 = deflection temperature under load: 100 ° C. or more), and fibers that are the outer surface A reinforced thermosetting resin layer (Dieflex FRP: thickness = 1.1 mm, combination of trade name RP # 100 and glass mat # 450) is laminated. The test results are shown in Table 1.
[0014]
[Table 1]
Figure 0003708206
Figure 0003708206
Figure 0003708206
Figure 0003708206
[0015]
【The invention's effect】
The present invention has been described in detail above, and a composite coated waterproofing coating layer in which a polymer composition coating layer and a fiber reinforced thermosetting resin layer are combined on the entire base of a floor slab having an expansion joint. In the floor slab waterproofing method to be formed, the layer between the polymer composition coating film layer and the fiber reinforced thermosetting resin layer is formed so as to cross over the existing joint and crosslink to the floor slabs on both sides thereof. By disposing a fiber reinforced thermosetting resin structure laminated with a reinforcing material having the required strength, it is possible to prevent waterproof breakage near the expansion joints based on the behavior of the base, and the original purpose is long-term A waterproof function over a wide range can be maintained.
[Brief description of the drawings]
FIG. 1 is a schematic diagram illustrating an embodiment of the present invention.
FIG. 2 is a schematic view of a specimen according to the present invention.
[Explanation of symbols]
1 Floor slab 2 Existing joint (extensible joint)
3 Polymer Composition Coating Layer 4 Fiber Reinforced Thermosetting Resin Layer 5 Fiber Reinforced Thermosetting Resin Structure 5a, 5b Reinforcing Material 5c Thermosetting Resin 6 Caulking Material 7 Backup Material

Claims (4)

伸縮目地部がある床スラブの下地全面に、高分子組成塗膜物の層と繊維強化熱硬化樹脂層4とを組み合わせた複合被覆塗膜防水層を形成する、床スラブの防水処理方法において、
上記既存目地部を跨いで、その両側の床スラブに架橋するように、前記高分子組成塗膜物の層と繊維強化熱硬化樹脂層との間に、所要の強度を有する2枚以上の補強材を積層した繊維強化熱硬化樹脂構造を配設し、
前記補強材のうち第1の補強材を、前記高分子組成塗膜物の層に沿って設け、第2の補強材を、前記第1の補強材を覆い、かつ両側部が前記高分子組成塗膜物の層に達するように設けることで、下地の挙動に基づく伸縮目地部付近の防水破壊を防止することを特徴とする、床スラブの防水処理方法。
In the floor slab waterproofing method of forming a composite coating coating waterproof layer combining a polymer composition coating layer and a fiber reinforced thermosetting resin layer 4 on the entire base of the floor slab having an expansion joint,
Two or more reinforcements having the required strength between the layer of the polymer composition coating and the fiber reinforced thermosetting resin layer so as to cross over the existing joint and crosslink to the floor slabs on both sides thereof A fiber reinforced thermosetting resin structure with laminated materials is arranged,
Among the reinforcing materials, a first reinforcing material is provided along the layer of the polymer composition coating film, a second reinforcing material covers the first reinforcing material, and both side portions are the polymer composition. A waterproofing method for floor slabs, characterized in that it is provided so as to reach a layer of a coated article, thereby preventing waterproof breakage near the expansion joints based on the behavior of the foundation.
前記補強材の幅は、既存目地部の幅の1.5倍以上であり、少なくとも第2の補強材の幅は、第1の補強材の幅よりも1.5倍〜3倍であることを特徴とする請求項1に記載の床スラブの防水処理方法。The width of the reinforcing material is at least 1.5 times the width of the existing joint, and at least the width of the second reinforcing material is 1.5 to 3 times the width of the first reinforcing material. The floor slab waterproofing method according to claim 1. 前記繊維強化熱硬化樹脂構造の補強材は、重量が230g/m2 以上のガラスチョップド・ストランド・マットもしくはガラスロービング・クロスであることを特徴とする請求項1あるいは2に記載の床スラブの防水処理方法。The floor slab waterproofing treatment according to claim 1 or 2, wherein the reinforcing material of the fiber reinforced thermosetting resin structure is a glass chopped strand mat or a glass roving cloth having a weight of 230 g / m 2 or more. Method. 前記繊維強化熱硬化樹脂構造の樹脂は、JIS:Kー7207:荷重たわみ温度試験で70℃以上、バーコール硬度が50以上を示す不飽和ポリエステル樹脂もしくはビニルエステル樹脂であることを特徴とする請求項1ないし3に記載の床スラブの防水処理方法。  The resin having a fiber-reinforced thermosetting resin structure is an unsaturated polyester resin or vinyl ester resin having a JIS: K-7207: 70 ° C or higher load deflection temperature test and a Barcol hardness of 50 or higher. The floor slab waterproofing method according to 1 to 3.
JP06279596A 1996-03-19 1996-03-19 Waterproofing method for floor slabs Expired - Fee Related JP3708206B2 (en)

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