Standard test method for pipeline coating patch materials 管道防腐層補(bǔ)片材料試驗(yàn)方法標(biāo)準(zhǔn)
Test method for evaluating pipeline coating patch materials 評(píng)定管道涂覆搭接材料的試驗(yàn)方法
Standard for test method of pipeline coating patch materials 管道防腐層補(bǔ)片材料試驗(yàn)方法標(biāo)準(zhǔn)
It is the ideal hot patching material the walls and bottoms of converters 是用于轉(zhuǎn)爐前、后大面及爐底等部位快速熱補(bǔ)的理想材料。
Standard test method for determining the workability of asphalt cold mix patching material 瀝青冷混合修補(bǔ)材料的實(shí)用性的測定的標(biāo)準(zhǔn)試驗(yàn)方法
In order to ensure the density degree and the level degree of repaired potholes , this thesis presents loose pavement coefficient method and material capacity method to control the accurate feel amount of patching materials 為使修補(bǔ)坑槽的密實(shí)度和平整度能同時(shí)獲得保證,本文提出了松鋪系數(shù)控制法和修補(bǔ)料用量控制法,來準(zhǔn)確控制修補(bǔ)材料的投料量。
This thesis focuses systematic and comprehensive study on distress causes , repair mechanisms , patching materials and maintenance procedures in relation to cracks and potholes , the two most commonly seen distresses in asphalt roads 本文著重針對(duì)瀝青路面裂縫和坑槽這兩類最常見的破損,對(duì)其形成原因、修補(bǔ)機(jī)理、修補(bǔ)材料及施工工藝進(jìn)行了系統(tǒng)、全面的研究。
Specially , the axial tensile strength of the interface of the new and old concrete has reached above 2 . 40mpa , greatly surpassing the preconcert goal ( > 1 . 0mpa ) , and its flexural strength also above 5 . 80mpa , having surpassed the preconcert target and the standard request ( 4 . 50mpa ) . ( 2 ) after hardening 4h and 8h the compressive strength of the patched concrete is bigger than 20 mpa , which can satisfy the request of fast patching . ( 3 ) the ych color material , which is mixed into rapid sulfoaluminate cement - concrete patching material , can take better effect and avoid chromatism on the appearance of new - old concrete 特別是新老混凝土界面的軸向抗拉強(qiáng)度已達(dá)2 . 40mpa以上,大大超過原定目標(biāo)(大于1 . 0mpa ) ,其界面抗折強(qiáng)度也在5 . 80mpa以上,也已超過原定指標(biāo)及規(guī)范要求(大于或等于4 . 50mpa ) ; ( 2 )修補(bǔ)混凝土硬化后4h 、 8h抗壓強(qiáng)度大于20mpa ,能滿足快速修補(bǔ)的要求; ( 3 )在快硬硫鋁酸鹽水泥混凝土修補(bǔ)材料中摻入自配的ych調(diào)色材料,能較好地起到調(diào)色作用,避免新老混凝土表面色差。
This thesis for the first time bases its analysis on the maintenance characteristics and repair mechanisms for crack filling and pothole repair in asphalt roads . it analyzes the properties of the aggregate and the bituminous binder in patching materials , and further analyzes the compatibilities of the aggregate and the bituminous binder , patching materials and old pavement materials . furthermore , it determines the grading types , the mineral aggregate gradations , the application rate of asphalt , the principle of selecting component materials and the air void 本文首次依據(jù)瀝青路面裂縫填封和坑槽修補(bǔ)的維修特性和修補(bǔ)機(jī)理,全面分析了修補(bǔ)材料中集料與瀝青結(jié)合料應(yīng)具備的性能要求,并對(duì)集料與瀝青結(jié)合料、修補(bǔ)材料與原有路面材料的相容性進(jìn)行了深入的分析,同時(shí)分析確定了修補(bǔ)材料的級(jí)配類型、礦料級(jí)配、瀝青用量范圍、組成材料的選用原則及空隙率等。
The repair effect was compared with various type of repair parameters such as patch thickness young ' s modulus and thickness young ' s modulus of adhesive layer . in the chapter iv , a thermalstatic mechanical loading analysis of the repair problem was made . for the single side repair , the patch material having the maximum mismatch in the coefficient of thermal expansion with that of the crack aluminum plate provides the better damage tolerance capability for single - side crack in the panel 模擬計(jì)算表明:粘膠模量增大, j積分值降低,修補(bǔ)效果與粘膠模量有關(guān);隨著粘膠厚度的增大,修補(bǔ)模型的j積分值略有增大后再逐步減小,應(yīng)合理選擇粘膠的厚度,盡量避免選擇j積分較大值時(shí)的粘膠厚度;隨著補(bǔ)片厚度的增加,修補(bǔ)模型的j積分值逐漸增大,到達(dá)一定量后又開始減小,因此補(bǔ)片的厚度需要合理選擇。