Anchor performance of wood bolt fully grouted by natural hydraulic lime and quartz sand slurry
Zhang Jingke , Chen Pengfei , Chen Wenwu , Li Zuixiong , Wang Nan , Zhang Shuai
DOI:
Received December 12, 2014,Revised , Accepted , Available online July 22, 2015
Volume ,2015,Pages 86-93
- Abstract
physical model and field experiments which consists of pullout test and strain monitoring on bolt-grout interface were conducted on wood bolts fully grouted by natural hydraulic lime and quartz sand slurry in rammed earth to study anchor capacity，failure mode，shear stress distribution and transfer along the bolt-grout interface .were studied on its Experimental results shows that ultimate anchor force in laboratory (30 kN~45 kN) is larger than that in field (16.2kN~19kN). Anchor system has strong ductility. In the process of loading, single-peak or double-peak stress distributes along bolt-grout interface and interfacial stress transfers toward anchor end, meanwhile, compressive stress mainly emerges at middle-end of anchor segment. With considerably physical and mechanical compatibility to rammed earth, the anchor system is suitable to conserve rammed earth heritages.