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關(guān)于GRC,你必須知道的知識點

所屬分類:產(chǎn)品資訊    發(fā)布時間:2019-09-19   作者:admin
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GRC構(gòu)件是什么,種類有哪些,它和EPS線條有什么區(qū)別,武漢GRC廠家的生產(chǎn)工藝是怎樣的,在武漢GRC構(gòu)件怎么安裝,如何選擇正規(guī)的武漢GRC廠家,中國GRC協(xié)會會員,恒大指定GRC供貨商-德誠奧科告訴你.

G  R  C  簡  介

武漢德誠奧科裝飾材料有限公司


一、 GRC是什么

GRC(Glass Fiber Reinforced Concrete)也簡稱為GFRC,中文名是玻璃纖維增強的水泥砂漿。GRC是一種以抗(耐)堿性玻璃纖維為增強材料、特種水泥砂漿為基礎(chǔ)材料輔以其它聚合物、外加劑,加強鋼筋及預(yù)埋件,依靠模具通過機械噴射、預(yù)混、混合等工藝一次噴射成型的一種高強度抗老化的的纖維水泥復(fù)合材料。(GRG是玻璃纖維加強石膏材料,GRP是玻璃纖維加強熱固性塑料或玻璃鋼材料。)

二、GRC的起源

GRC技術(shù)起源于20世紀(jì)60年代的歐美國家。在GRC技術(shù)發(fā)展的初期,由于其突出的物理性能,使得人們對GRC材料給予了厚望。當(dāng)時在GRC材料中使用的是無堿玻璃纖維,這種纖維原本是用于塑料制品,并且相當(dāng)成功。但是由于水泥是一種堿性材料,不具備耐堿性能的無堿玻璃纖維長期處于水泥制品的堿性環(huán)境中,不斷地被侵蝕,使得GRC制品性能迅速下降,無法**GRC制品的耐久性及安全性。這一問題在當(dāng)時嚴重制約了GRC材料的應(yīng)用和發(fā)展。

20世紀(jì)七十年代,由英國的建筑研究機構(gòu)(BRE)與皮爾金玻璃公司(Pilkigton)進行抗堿玻璃纖維增強波特蘭水泥制品的聯(lián)合開發(fā)。耐堿玻璃纖維的誕生,成功解決了GRC制品的耐久性問題,使得GRC獲得了新生。

GRC應(yīng)用技術(shù)又逐漸擴展到日本、美國、德國、荷蘭、西班牙、意大利、中國、新加坡、羅馬尼亞等40多個國家,共計有500多家公司取得制造GRC制品的許可證。

三、GRC的材料組成

水泥:通常用于GRC中的水泥主要有硫鋁酸鹽水泥、硫鋁酸鹽白水泥、硅酸鹽水泥、硅酸鹽白水泥。

砂子:GRC使用的砂子可以是天然砂,也可以是人工砂,砂子的質(zhì)量主要應(yīng)考慮含沙量、堅固性和有害物質(zhì)量。砂粒越細強度越低,砂粒越粗抗拉性越低。根據(jù)制作工藝合理選擇砂子粒徑。

纖維:耐堿性玻璃纖維是GRC.重要的原材料,其種類包括無捻粗紗(噴射紗)、短切紗、網(wǎng)格布。在使用硅酸鹽水泥時耐堿性玻璃纖維中氧化鋯含量不得低于16.0%。在使用硫鋁酸鹽水泥時耐堿性玻璃纖維中氧化鋯含量不得低于14.0%。

聚合物:通常添加的聚合物為丙乳,即丙烯酸酯乳液。

外加劑:外加劑可以改善GRC的力學(xué)和物理性能,可以使制作過程變得容易。GRC.常用的外加劑是減水劑(塑化劑),也可根據(jù)需要使用早強劑、緩凝劑、防水劑等。

鋼材:根據(jù)產(chǎn)品類型及安裝方式的需要,用于GRC的鋼材主要有:龍骨框架、預(yù)埋件、加強肋鋼筋等。

四、GRC的特性及優(yōu)勢

 GRC的特性:無限可塑性,任意藝術(shù)造型,實現(xiàn)設(shè)計師的設(shè)計夢想。環(huán)保、隔音、抗震,可再生,不含放射性核元素。隔音吸音,質(zhì)輕高強,耐沖擊。防火防潮,A1級防火材料,耐浸泡。耐候性,材料干濕變形小于0.123%,抗風(fēng)化及日照。GRC的優(yōu)勢:質(zhì)量輕,強度高,抗凍融性能好,重量15~40KG,抗壓40Mpa,抗彎34Mpa,色彩豐富,采用同質(zhì)透心礦物原料,可按需定制色彩造型,質(zhì)感好、肌理多,噴砂面、荔枝面、光面等質(zhì)感,條形、鏤空、浮雕等肌理。安裝方便、周期短,可大塊生產(chǎn)分割,安裝簡便,工廠預(yù)制,可縮短工期。

五、GRC主要應(yīng)用領(lǐng)域

建筑領(lǐng)域:幕墻、建筑裝飾構(gòu)件、瓦、隔墻、煙氣道等

庭院領(lǐng)域:亭閣、花架、花盆、噴泉、護欄、庭院桌椅等

裝飾領(lǐng)域:天棚、墻體裝飾、壁爐等

藝術(shù)領(lǐng)域:浮雕、雕塑、工藝品等

市政領(lǐng)域:管道、消聲墻等

其他領(lǐng)域:糧倉、人工魚礁等

目前GRC應(yīng)用.多的范圍是建筑幕墻和建筑裝飾構(gòu)件。

建筑幕墻:GRC平面掛板、GRC曲面板、仿木GRC掛板、仿巖GRC掛板、清水掛板等。

建筑裝飾構(gòu)件:GRC線條、GRC柱子、GRC窗套線、GRC花瓶柱等。

六、GRC模具

       GRC的造型及表面質(zhì)感是由模具決定的,根據(jù)需要使用不同種類的模具,模具的設(shè)計將會直接影響GRC的產(chǎn)品質(zhì)量、生產(chǎn)周期和成本。GRC常用模具種類包括:

1.鋼制模具:用在使用頻率高,造型簡單,或者產(chǎn)品單件較重的產(chǎn)品。

2.樹脂模具(玻璃鋼):一般應(yīng)用在使用頻率高,及造型較為復(fù)雜的產(chǎn)品上。

3.木質(zhì)模具: 一般應(yīng)用在造型比較簡單,數(shù)量較少的產(chǎn)品上。

4.硅膠、橡膠模具:一般應(yīng)用在造型復(fù)雜或者表面紋理要求較高的產(chǎn)品上。

七、GRC制作工藝

GRC標(biāo)準(zhǔn)制作工藝主要有噴射法、預(yù)混法、鋪網(wǎng)抹漿法等。預(yù)混法是將水泥砂漿與短切砂攪拌后再澆入模型之中或振動或壓實成型。鋪網(wǎng)抹漿法多為手工生產(chǎn),簡單易行,質(zhì)量不易控制,產(chǎn)品強度低,只能用于少類小型GRC產(chǎn)品。噴射法是用GRC專用噴槍制作GRC產(chǎn)品,水泥砂漿和噴射砂在噴槍處混合后噴入模具之中。這種制作方法是GRC裝飾制品及外墻板領(lǐng)域廣泛采用的制作工藝,適用面廣、產(chǎn)品強度高,我公司是湖北地區(qū)..使用噴射工藝的武漢GRC構(gòu)件廠家。

噴射法制作GRC工藝流程是:

1.噴涂脫模劑;2.科學(xué)配比材料成分;3.漿料攪拌均勻;4.使用GRC專用噴槍將攪拌好的水泥砂漿和玻璃纖維短絲噴射入模具中;5.滾筒壓實;6.安置鍍鋅鋼筋骨架及預(yù)埋件;7.滾壓收邊。

八、GRC的養(yǎng)護

       水泥與水的反應(yīng)需要一個緩慢的過程,所以在產(chǎn)品噴射完成后,需要使用聚乙烯薄膜將半成品覆蓋包裹,保持水化熱,防止水分的蒸發(fā)。 靜置24小時凝固成型后方可脫模。脫模后的半成品根據(jù)需要進行修邊、填補、磨光等工序。修復(fù)完成后,半成品送至養(yǎng)護車間通過控制濕度及溫度養(yǎng)護3-7天。養(yǎng)護不足或沒有進行標(biāo)準(zhǔn)養(yǎng)護的GRC制品會明顯的強度不足,抗凍性差,容易產(chǎn)生裂紋。

 

九、關(guān)于我們

       武漢德誠奧科裝飾材料有限公司是一家專業(yè)從事GRC生產(chǎn)近20年的民營企業(yè),是.具規(guī)模的、技術(shù).為**的武漢GRC構(gòu)件廠家之一。我們的優(yōu)秀案例覆蓋華全國各大省市地區(qū),并成為恒大地產(chǎn)華中區(qū)域武漢GRC構(gòu)件指定供貨商。

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