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水基高分子聚合物穩(wěn)定碎石路用性能研究

Research on Mechanical Properties of High Polymer Macromolecule Stabilized Aggregates

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劉彥¹ , 曹東偉^1 , 3, 夏磊^{2 , 3} , 鐘勇⁴ , 李彥蒼¹ , 魏紅梅⁴

( 1 . 河北工程大學(xué) 土木工程學(xué)院，邯鄲 056038 ; 2. 長安大學(xué) 材料科學(xué)與工程學(xué)院，西安 710064 ;

3 . 中路高科交通檢測檢驗(yàn)認(rèn)證有限公司北京 100088 ; 4. 新疆交通投資（集團(tuán)）有限責(zé)任公司

運(yùn)營分公司，烏魯木齊 830099)

摘要：為研究高分子聚合物穩(wěn)定碎石的抗裂性能，通過加州承載比 ( CBR) 、無側(cè)限抗壓強(qiáng)度、單軸貫入、干縮、溫縮、車轍、凍融循環(huán)等試驗(yàn)與傅里葉變換紅外光譜對其進(jìn)行研究。結(jié)果表明：隨著壓實(shí)度的提高與聚合物摻量的增加，CBR 值逐漸增大，為水泥穩(wěn)定碎石的 2 ~ 3 倍；無側(cè)限抗壓強(qiáng)度值偏低，在聚合物穩(wěn)定碎石中加入少量水泥可顯著提高其早期強(qiáng)度；聚合物摻量為 0. 5% 便可達(dá)到普通瀝青混合料的單軸貫入強(qiáng)度值；干縮、溫縮系數(shù)分別為水泥穩(wěn)定碎石的 1 /4 和 1 /3 , 有效減少裂縫的產(chǎn)生；高溫穩(wěn)定性良好但抗凍性能和抗水損害能力較弱。

關(guān)鍵詞：道路工程；水基高分子聚合物；柔性基層；抗裂性能

中圖分類號：U414

文獻(xiàn)標(biāo)志碼：A

文章編號： 1005- 8249 (2025) 05- 0001- 07

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .05 .001

LIU Yan¹ , CAO Dongwei ^{1 , 3} , XIA Lei^{2 , 3} , ZHONG Yong⁴ , LI Yancang¹ , WEI Hongmei⁴

( 1 . School of Civil Engineering , Hebei University of Engineering , Handan 056038 , China;

2. School of Materials Science and Engineering , Chang ’an University , Xi ’an 710064 , China;

3 . China - Road Transportation Verification & Inspection Hi - Tech Co . , Ltd . , Beijing100088 , China;

4. Xinjiang Communications Investment (Group) Co . , Ltd . , Operation Branch , Urumqi 830099 , China)

Abstract : This paper investigated the cracking resistance of high polymer macromolecule stabilized aggregates by examining a range of physical and mechanical properties , including the California bearing ratio ( CBR) , unconfined compressive strength , uniaxial penetration , dry and heat shrinkage deformation , wheel tracking , Freeze - thaw splitting test , and Fourier transform infrared spectroscopy. The findings indicate that as the degree of compaction and the quantity of polymer increase , the CBR value rises gradually , reaching a value that is two to three times that of cement stabilized macadam. Additionally , the unconfined compressive strength is relatively low , yet the incorporation of a modest quantity of cement into the high polymer macromolecule stabilized aggregates can enhance its early strength . The polymer dosage of

0. 5% can achieve the uniaxial penetration strength value of an ordinary asphalt mixture . Furthermore , the dry and heat shrinkage deformation are 1 /4 and 1 /3 of those of cement stabilized macadam , respectively , which can effectively reduce the cracking of pavement. However , while the high temperature stability is good , the freezing resistance and water damage resistance are weak.

Key words : highway engineering; high polymer macromolecule; flexible base; crack resistance

基金項(xiàng)目：中央引導(dǎo)地方科技發(fā)展資金項(xiàng)目 (236Z1218G) ；新疆交通投資（集團(tuán)）有限責(zé)任公司科技項(xiàng)目 (202301005) 。

作者簡介：劉彥 (1998—) , 女，本科，研究生，研究方向：道路工程新材料。

通信作者：曹東偉 (1974—) , 男，博士，研究員，研究方向：道路工程新材料、新結(jié)構(gòu)。

收稿日期：2024 - 06 - 07