橡膠顆粒和硅藻土復(fù)合改性瀝青混合料破冰試驗研究
發(fā)布時間：2018-11-20 12:58
【摘要】：吉林省地處季節(jié)性冰凍地區(qū)，冬季降雪頻繁，導致城市橋梁路面經(jīng)常出現(xiàn)結(jié)冰現(xiàn)象，目前要采取的除冰雪手段是在降雪后及時撒布除雪劑，雖然能夠起到一定的除冰雪效果，但長期撒布會對橋面服務(wù)水平造成不良影響。因此，提出一種適用于季凍區(qū)城市橋梁橋面鋪裝的新型材料具有重要實際意義。 廢舊橡膠輪胎的掩埋及堆放會嚴重污染環(huán)境，將廢舊橡膠輪胎經(jīng)過一定的加工工藝制成橡膠顆粒，摻入瀝青混合料中鋪筑路面是一種重要的處理方式。硅藻土作為一種工業(yè)礦料，在吉林省分布廣泛，其作為一種良好的瀝青無機改性劑已經(jīng)得到較多學者的驗證。對這些材料進行綜合開發(fā)利用具有良好的環(huán)保價值和經(jīng)濟效益。將橡膠顆粒和硅藻土采用一定的工藝摻配入瀝青混合料中，開發(fā)一種新型的橡膠顆粒和硅藻土復(fù)合改性瀝青混合料，用于季凍區(qū)城市橋梁橋面鋪裝，可有效提高橋面破冰能力，有利于節(jié)約資源、保護環(huán)境，促進城市綠色生態(tài)橋梁的建設(shè)。 本文依托吉林省重大科技攻關(guān)計劃項目“季凍區(qū)橋梁綠色生態(tài)橋面鋪裝材料研究及產(chǎn)品開發(fā)”，主要在以下幾個方面進行研究：（1）根據(jù)設(shè)計目標確定級配形式和橡膠顆粒及硅藻土改性劑的合理摻量，并優(yōu)化混合料制備工藝；（2）對復(fù)合改性瀝青混合料進行馬歇爾試驗，，對橡膠顆粒、硅藻土以及不同級配對混合料體積參數(shù)及力學指標的影響進行研究；（3）對復(fù)合改性瀝青混合料在不同橡膠顆粒含量以及不同溫度條件下的彈性模量進行研究；（4）采用破冰模擬試驗機對不同碾壓次數(shù)、不同橡膠顆粒粒徑、不同冰層厚度、不同試驗溫度、不同荷載頻率等條件下的復(fù)合改性瀝青混合料試件進行破冰試驗，并通過邊緣檢測圖片處理技術(shù)提取冰層破損率，作為破冰性能的評價指標；（5）采用破冰模擬試驗機對復(fù)合改性瀝青混合料進行除雪效果研究；（6）利用SPSS數(shù)據(jù)分析軟件對復(fù)合改性瀝青混合料破冰試件的冰層破碎率與破冰條件的相關(guān)性進行研究。
[Abstract]:Jilin Province is located in the seasonal frozen area, with frequent snowfall in winter, which often leads to the phenomenon of icing on the road surface of urban bridges. At present, the ice and snow removal method to be adopted is to distribute snow remover in time after snowfall, although it can play a certain role in removing ice and snow. But long-term spreading will have a negative impact on the level of bridge deck services. Therefore, it is of great practical significance to propose a new material for bridge deck pavement in seasonal frozen areas. The burying and stacking of waste rubber tires will seriously pollute the environment. It is an important way to make rubber particles from waste rubber tires and add them into asphalt mixture to pave the pavement. Diatomite, as a kind of industrial mineral material, is widely distributed in Jilin Province. As a good inorganic modifier of asphalt, diatomite has been verified by many scholars. The comprehensive development and utilization of these materials has good environmental protection value and economic benefit. The rubber particle and diatomite are mixed into asphalt mixture with certain technology to develop a new type of rubber particle and diatomite composite modified asphalt mixture, which can be used in the city bridge deck pavement in the seasonal frozen area, which can effectively improve the ice-breaking ability of the bridge deck. It is propitious to save resources, protect environment and promote the construction of urban green ecological bridge. This article relies on Jilin Province important science and technology key project "the season frozen area bridge green ecology bridge deck surfacing material research and the product development", The main contents are as follows: (1) according to the design goal, the gradation form and the reasonable amount of rubber particle and diatomite modifier are determined, and the preparation process of mixture is optimized; (2) Marshall test of compound modified asphalt mixture was carried out to study the effects of rubber particles, diatomite and different grades on the volume parameters and mechanical parameters of the mixture; (3) the elastic modulus of composite modified asphalt mixture under different rubber particle content and different temperature was studied. (4) the ice breaking test of composite modified asphalt mixture under different rolling times, different rubber particle size, different ice thickness, different test temperature, different load frequency, etc. The damage rate of ice layer is extracted by edge detection image processing technology, which is used as the evaluation index of ice-breaking performance. (5) the snow removal effect of composite modified asphalt mixture was studied by using ice breaking simulation test machine. (6) the correlation between ice breaking rate and ice breaking condition of composite modified asphalt mixture was studied by using SPSS data analysis software.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U414
本文編號：2344979
[Abstract]:Jilin Province is located in the seasonal frozen area, with frequent snowfall in winter, which often leads to the phenomenon of icing on the road surface of urban bridges. At present, the ice and snow removal method to be adopted is to distribute snow remover in time after snowfall, although it can play a certain role in removing ice and snow. But long-term spreading will have a negative impact on the level of bridge deck services. Therefore, it is of great practical significance to propose a new material for bridge deck pavement in seasonal frozen areas. The burying and stacking of waste rubber tires will seriously pollute the environment. It is an important way to make rubber particles from waste rubber tires and add them into asphalt mixture to pave the pavement. Diatomite, as a kind of industrial mineral material, is widely distributed in Jilin Province. As a good inorganic modifier of asphalt, diatomite has been verified by many scholars. The comprehensive development and utilization of these materials has good environmental protection value and economic benefit. The rubber particle and diatomite are mixed into asphalt mixture with certain technology to develop a new type of rubber particle and diatomite composite modified asphalt mixture, which can be used in the city bridge deck pavement in the seasonal frozen area, which can effectively improve the ice-breaking ability of the bridge deck. It is propitious to save resources, protect environment and promote the construction of urban green ecological bridge. This article relies on Jilin Province important science and technology key project "the season frozen area bridge green ecology bridge deck surfacing material research and the product development", The main contents are as follows: (1) according to the design goal, the gradation form and the reasonable amount of rubber particle and diatomite modifier are determined, and the preparation process of mixture is optimized; (2) Marshall test of compound modified asphalt mixture was carried out to study the effects of rubber particles, diatomite and different grades on the volume parameters and mechanical parameters of the mixture; (3) the elastic modulus of composite modified asphalt mixture under different rubber particle content and different temperature was studied. (4) the ice breaking test of composite modified asphalt mixture under different rolling times, different rubber particle size, different ice thickness, different test temperature, different load frequency, etc. The damage rate of ice layer is extracted by edge detection image processing technology, which is used as the evaluation index of ice-breaking performance. (5) the snow removal effect of composite modified asphalt mixture was studied by using ice breaking simulation test machine. (6) the correlation between ice breaking rate and ice breaking condition of composite modified asphalt mixture was studied by using SPSS data analysis software.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U414
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