JP2020528020A - コンクリートを養生するための方法および器具 - Google Patents
コンクリートを養生するための方法および器具 Download PDFInfo
- Publication number
- JP2020528020A JP2020528020A JP2020524722A JP2020524722A JP2020528020A JP 2020528020 A JP2020528020 A JP 2020528020A JP 2020524722 A JP2020524722 A JP 2020524722A JP 2020524722 A JP2020524722 A JP 2020524722A JP 2020528020 A JP2020528020 A JP 2020528020A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- layer
- film
- inner layer
- outer layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
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- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/247—Controlling the humidity during curing, setting or hardening
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- B28B1/00—Producing shaped prefabricated articles from the material
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- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
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- B28B11/245—Curing concrete articles
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- B32B7/04—Interconnection of layers
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- B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/04—Preventing evaporation of the mixing water
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
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Abstract
Description
本出願は、米国特許法第119条(e)により、2017年7月19日に出願された米国特許仮出願第62/534,482号および2017年11月29日に出願された米国特許仮出願第62/591,817号の優先権の利益を主張するものであり、両仮出願の開示内容全体を本明細書に援用する。本発明は、コンクリートを養生するための方法および器具に関する。
24時間の水飽和後の結合強度−1インチ(すなわち約2.54cm)あたり少なくとも20g
坪量−70〜300g/1m2(フィルム40〜200g/1m2、吸収層30〜120g/1m2、接着剤1〜10g/1m2)
機械方向の引き裂き−500〜8000g
幅方向の引き裂き−500〜8000g
水蒸気透過率(ASTM F1249−13またはASTM E96)−0.5〜9.9g/m2/日
コンクリートは、養生中のコンクリート部材の水和に用いる水のpHが硬化反応のpHと同じかそれに近い場合、より良く硬化する。水道水のpHは通常6.5〜8.5である。養生中のコンクリートは一般にpH約11〜約13.5の範囲であり、約12.5が一般的であると考えられている。本発明の様々な実施形態において、pH調整添加剤は、養生中のコンクリートの水和に用いる水のpHを、所望のレベル、好ましくはコンクリートの硬化反応のpH前後に変えるのに有効な量で用いられる。例えば、酢酸ナトリウム、ウォラストナイト、酸化カルシウムおよび/または水酸化カルシウムなどのpH調整添加剤を、コンクリート養生カバー40の1つ以上の層および/または投入されたコンクリート部材またはプレキャストコンクリート部材に接触させる水に加えることができる。これらのpH調整添加剤は、コンクリート養生カバー40の層に直接、または1種類以上のpH調整添加剤を含むマスターバッチの形態のpH調整成分として添加することができる。
Claims (30)
- 第1の外層と、第2の外層と、前記第1の外層に隣接した第1の内層と、前記第2の外層に隣接した第2の内層と、前記第1の内層に隣接した第3の内層と、前記第2の内層および前記第3の内層に隣接した第4の内層と、を有するフィルムと、
不織布を含む吸収層と、
前記フィルムの前記第2の外層を前記吸収層に接着する接着材料と、を備え、
前記第1の外層および前記第2の外層は、直鎖状低密度ポリエチレンを含み、
前記第1の内層および前記第2の内層は、直鎖状低密度ポリエチレンおよび高密度ポリエチレンを含み、
前記第3の内層および前記第4の内層は、エチレンポリプロピレンコポリマーを含む、コンクリートを養生するための器具。 - 前記フィルムの前記第1の外層は、滑り止め成分を含む、請求項1に記載の器具。
- 前記フィルムの前記第1の外層は、動摩擦係数および静摩擦係数が各々少なくとも0.7である、請求項2に記載の器具。
- 前記不織布は、複数の隆起領域および複数の凹領域を含み、前記接着剤は前記フィルムの前記第2の外層を前記不織布の前記隆起領域に接着する、請求項1に記載の器具。
- 前記養生中のコンクリートの水和に用いられる前記水のpHを調整するためのpH調整成分をさらに含む、請求項1に記載の器具。
- 前記pH調整成分は、前記フィルムに取り込まれている、請求項5に記載の器具。
- 前記pH調整成分は、前記吸収層に取り込まれている、請求項5に記載の器具。
- 前記pH調整成分は、酸化カルシウムである、請求項5に記載の器具。
- 前記pH調整成分は、前記養生中のコンクリートの水和に用いられる前記水のpHを約11〜約13に調整する、請求項5に記載の器具。
- 前記フィルムは、前記吸収層の片面に水蒸気バリアを形成する、請求項1に記載の器具。
- 前記フィルムの前記第2の内層を介した前記吸収層からの前記器具の前記水蒸気透過率は、10g/m2/日未満である、請求項10に記載の器具。
- 前記器具は、貫入抵抗が少なくとも14ポンドである、請求項1に記載の器具。
- 前記器具は、エルメンドルフ引裂強度が少なくとも1,000gである、請求項1に記載の器具。
- 前記フィルムの前記第1の外層および前記第2の外層は、エチレンブチルアクリレートを含む、請求項1に記載の器具。
- フィルムを準備し、
複数の隆起面と複数の凹領域とを有する吸収材を準備し、
接着材料を準備し、
前記フィルムをその結晶軟化温度まで加熱し、
前記接着材料を前記吸収材の前記隆起面に塗布し、
前記フィルムおよび前記吸収材の前記凹領域によって区切られた複数のポケットが形成されるように、前記フィルムを前記吸収材の前記隆起面に接着することを含む、コンクリートを養生するための器具の製造方法。 - 前記フィルム、前記吸収材および前記接着材料は、一緒に積層されている、請求項15に記載の方法。
- 前記接着材料はホットメルト接着剤である、請求項15に記載の方法。
- 得られる器具は、飽和結合強度が少なくとも約22g/インチである、請求項15に記載の方法。
- コンクリートを養生する方法であって、
コンクリートを所望の形状になるように投入してコンクリート部材を形成し、
前記コンクリートがブリード段階に達するまで待ち、
投入されたコンクリートの表面に水和水を接触させ、
前記水和水を接触させた後に、前記コンクリートの前記表面に器具を接触させ、前記器具は、フィルムと、前記フィルムに接着された吸収層と、前記水和水のpHを調整するためのpH調整成分と、を含む、方法。 - 前記pH調整成分は、前記フィルムに取り込まれている、請求項19に記載の方法。
- 前記pH調整成分は、前記吸収層に取り込まれている、請求項19に記載の方法。
- 前記pH調整成分は、酸化カルシウムである、請求項19に記載の方法。
- 前記pH調整成分は、前記水和水のpHを約11〜約13に調整する、請求項19に記載の方法。
- 少なくとも7日間、前記水和水のpHを約11より高く維持する工程を含む、請求項23に記載の方法。
- 前記フィルムは、前記吸収層の片面に水蒸気バリアを形成する、請求項19に記載の方法。
- 前記フィルムを介した前記吸収層からの前記器具の前記水蒸気透過率は、10g/m2/日未満である、請求項25に記載の方法。
- 前記フィルムは、滑り止め成分を含む、請求項19に記載の方法。
- 前記器具は、前記コンクリート部材を囲むように構成されている、請求項19に記載の方法。
- 前記器具を前記コンクリート部材に接触させる工程は、前記コンクリート部材を前記器具の中に囲い込み、前記囲い込んだコンクリート部材を、前記コンクリート部材が投入された場所とは異なる場所まで運搬することで、運搬時にも前記コンクリート部材の養生を継続することを含む、請求項19に記載の方法。
- 地面と、前記地面に投入されるコンクリートとの間にバリア層を設けるための器具であって、
第1の外層と、第2の外層と、前記第1の外層に隣接した第1の内層と、前記第2の外層に隣接した第2の内層と、前記第1の内層に隣接した第3の内層と、前記第2の内層および前記第3の内層に隣接した第4の内層と、を有するフィルムを備え、
前記第1の外層および前記第2の外層は、直鎖状低密度ポリエチレンを含み、
前記第1の内層および前記第2の内層は、直鎖状低密度ポリエチレンおよび高密度ポリエチレンを含み、
前記第3の内層および前記第4の内層は、エチレンポリプロピレンコポリマーを含む、器具。
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US62/591,817 | 2017-11-29 | ||
US16/037,106 US10675779B2 (en) | 2017-07-19 | 2018-07-17 | Methods and apparatuses for curing concrete |
US16/037,106 | 2018-07-17 | ||
PCT/US2018/042574 WO2019018456A2 (en) | 2017-07-19 | 2018-07-18 | METHODS AND APPARATUS FOR CONCRETE CURING |
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US10675779B2 (en) | 2020-06-09 |
US20200247007A1 (en) | 2020-08-06 |
US20190022893A1 (en) | 2019-01-24 |
US20210138685A1 (en) | 2021-05-13 |
WO2019018456A2 (en) | 2019-01-24 |
WO2019018456A3 (en) | 2019-02-21 |
CA3070062A1 (en) | 2019-01-24 |
AU2018304209A1 (en) | 2020-02-06 |
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JP7267275B2 (ja) | 2023-05-01 |
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