建材世界
建材世界
건재세계
THE WORLD OF BUILDING MATERIALS
2014年
z2期
6-8
,共3页
早强剂%水泥稳定基层%抗压强度
早彊劑%水泥穩定基層%抗壓彊度
조강제%수니은정기층%항압강도
early strength admixture%cement stabilized base%compressive strength
试验针对内蒙古中西部季节性冰冻地区的气候特点，以呼和浩特市道路改扩建工程为依托，在水泥稳定碎石混合料中掺入5%的水泥，然后预定6个不同含水量3%-8%进行击实试验，得出最大干密度与最佳含水量。在此基础上，按水泥用量（重量比）为0%、8%、10%、12%、14%和16%的早强剂替换水泥，研究不同掺量早强剂的水泥稳定碎石混合料1d、2 d、3 d、7d的无侧限抗压强度，得出最佳早强剂的掺入量为12%。这一试验结果为寒冷地区现场施工提高其早期强度，使其力学强度在很短时间内就能达到工程设计要求提供了依据，最终达到在保证施工货量的前提下缩短施工工期的目的。
試驗針對內矇古中西部季節性冰凍地區的氣候特點，以呼和浩特市道路改擴建工程為依託，在水泥穩定碎石混閤料中摻入5%的水泥，然後預定6箇不同含水量3%-8%進行擊實試驗，得齣最大榦密度與最佳含水量。在此基礎上，按水泥用量（重量比）為0%、8%、10%、12%、14%和16%的早彊劑替換水泥，研究不同摻量早彊劑的水泥穩定碎石混閤料1d、2 d、3 d、7d的無側限抗壓彊度，得齣最佳早彊劑的摻入量為12%。這一試驗結果為寒冷地區現場施工提高其早期彊度，使其力學彊度在很短時間內就能達到工程設計要求提供瞭依據，最終達到在保證施工貨量的前提下縮短施工工期的目的。
시험침대내몽고중서부계절성빙동지구적기후특점，이호화호특시도로개확건공정위의탁，재수니은정쇄석혼합료중참입5%적수니，연후예정6개불동함수량3%-8%진행격실시험，득출최대간밀도여최가함수량。재차기출상，안수니용량（중량비）위0%、8%、10%、12%、14%화16%적조강제체환수니，연구불동참량조강제적수니은정쇄석혼합료1d、2 d、3 d、7d적무측한항압강도，득출최가조강제적참입량위12%。저일시험결과위한랭지구현장시공제고기조기강도，사기역학강도재흔단시간내취능체도공정설계요구제공료의거，최종체도재보증시공화량적전제하축단시공공기적목적。
This experiment was based on the climatic characteristics of the seasonal frozen area in west central of Inner Mongolia, relied on the city road expansion project of Hohhot, and mixed with 5%of cement into the mixture of the cement stabilized macadam base, then it was scheduled six different moisture content from 3%to 8%for compaction test. In order to obtaining the maximum dry density and the optimum water content. On the basis, it was replaced the cement by the early strength agent according to the amount of cement (weight ratio), which was 0%, 8%, 10%, 12%, 14% and 16%. And according to the different dosage of early strength agent, it was studied the unconfined compressive strength of cement stabilized macadam mixture which had different dosages of early strength agent in 1 d, 2 d, 3 d, 7 d. It concluded that the best dosage of early strength agent is 12%. The experiment proved that early strength agent in the cement stabilized macadam mixture can improve the early strength of the scene construction in cold area and it made the mechanical strength achieve the requirement of engineering design in a very short period of time , it was achieved the purpose of shortening construction period on the premise of guarantee construction quality.
