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公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠
- 發(fā)布時(shí)間 : 2026-7-12 15:55:22
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(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠
(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
- 發(fā)布時(shí)間 : 2026-7-12 15:55:22
- Views:
公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠外觀為灰色茹稠性液體,以聚氨醋預(yù)聚體為A組分,以二胺固化劑為主材,分散在高分子茹結(jié)劑中作為B組分。雙組分設(shè)計(jì)的優(yōu)勢在于固化時(shí)間可根據(jù)比例靈活調(diào)節(jié),能夠較好地迎合材料在不同溫度、不應(yīng)用場景下對固化時(shí)間的不同要求。其性能參數(shù)取值見表2。在灌縫前按照一定比例混合A, B組分,攪拌均勻后使用。
試驗(yàn)方法
常溫封水試驗(yàn)
在封水試驗(yàn)開始前,準(zhǔn)備刻度值在0.2 s及以下的秒表,水量可調(diào)節(jié)的噴水器、量筒,容積在2 000 mL及以上且刻度值不大于5 mL的容器。此后,按照試驗(yàn)步驟進(jìn)行常溫下的封水試驗(yàn)。為體現(xiàn)此類丁基防水嵌縫膠的路用性能,將其與華通90#丁基防水嵌縫膠進(jìn)行對比試驗(yàn)。
凍融循環(huán)后封水試驗(yàn)
除常溫封水試驗(yàn)儀器外,配備溫度為50100℃的烘箱。此后,按照試驗(yàn)步驟進(jìn)行華通90#丁基防水嵌縫膠和公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠凍融循環(huán)后封水試驗(yàn)。
現(xiàn)場封水試驗(yàn)
為驗(yàn)證公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠封水性能,在忻阜高速I24+100-I24+800段進(jìn)行現(xiàn)場試驗(yàn)。試驗(yàn)路瀝青路面存在橫向裂縫、車轍等早期病害,裂縫寬度為8一10 mm。將試驗(yàn)路劃分為長度相同的兩個(gè)單元,分別灌注華通90#丁基防水嵌縫膠和公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠。
第1步:試件制備。按照《公路工程瀝青及瀝青混合料試驗(yàn)規(guī)程》JTG 3410-2025)成型不同配合比的混凝土試件,試件尺寸(長x寬x厚)統(tǒng)一按70 cmx25 cmx15 cm確定,并按要求養(yǎng)護(hù)。待試件達(dá)到一定強(qiáng)度后,通過預(yù)應(yīng)力加載系統(tǒng)向試件施加預(yù)應(yīng)力,以模擬真實(shí)受力狀態(tài)下路面裂縫的形成過程,使試件自然開裂,裂縫寬度控制在10 mm。
第2步:灌縫。將試件固定,對華通90#丁基防水嵌縫膠均勻加熱,使其達(dá)到規(guī)定溫度。同時(shí)將公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠的A組分(聚氨醋預(yù)聚體)和B組分(高分子茹結(jié)劑)按照一定的比例混溶。此后,按照《公路養(yǎng)護(hù)技術(shù)標(biāo)準(zhǔn)》JTG 5110-2023的流程對各試件灌縫,以填補(bǔ)試件裂縫。灌縫過程中,應(yīng)使用鐵鉤反復(fù)鉤動(dòng)縫壁,以便將側(cè)壁殘留的灰塵溶人丁基防水嵌縫膠,增強(qiáng)丁基防水嵌縫膠和裂縫側(cè)壁間的茹結(jié)性!n。灌縫結(jié)束后靜置試件,使丁基防水嵌縫膠自然冷卻。
第3步:在試件底部放置量筒,讀取并記錄初始數(shù)據(jù)。此后,通過噴水器向試件噴水以模擬降雨強(qiáng)度。待丁基防水嵌縫膠底部開始滲水后用秒表計(jì)時(shí)。持續(xù)噴水5 min。待丁基防水嵌縫膠底部滲水完全結(jié)束后停止計(jì)時(shí),并測出實(shí)際滲水量。
第4步:根據(jù)《公路排水設(shè)計(jì)規(guī)范》(JTG/T D33-2012)計(jì)算丁基防水嵌縫膠表面水的人滲率。通過比較計(jì)算結(jié)果,驗(yàn)證公路用可調(diào)色常溫彈性高分子丁基防水嵌縫膠在常溫下的封水性能。http://www.mychangxin.com/
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