人民长江
人民長江
인민장강
YANGTZE RIVER
2015年
12期
68-71
,共4页
改性膨胀土%膨胀率%水稳定性%胀缩破坏
改性膨脹土%膨脹率%水穩定性%脹縮破壞
개성팽창토%팽창솔%수은정성%창축파배
modified expansive soil%expansive rate%water stability%expansion-shrinkage failure
为了解南阳地区膨胀土在常见单层、多层建筑荷载下的膨胀变形特点，开展了有荷载条件下不同石灰掺量改性膨胀土的膨胀率及水稳定性试验研究。试验结果表明：掺入石灰改良后，膨胀土的膨胀率显著下降，且水稳定性大大提高，尤其是当石灰掺量为3%时，其膨胀率低于1%，经历2~5次干湿循环即可达到稳定状态。相关成果可为膨胀土地区多层建筑的地基处理提供参考。
為瞭解南暘地區膨脹土在常見單層、多層建築荷載下的膨脹變形特點，開展瞭有荷載條件下不同石灰摻量改性膨脹土的膨脹率及水穩定性試驗研究。試驗結果錶明：摻入石灰改良後，膨脹土的膨脹率顯著下降，且水穩定性大大提高，尤其是噹石灰摻量為3%時，其膨脹率低于1%，經歷2~5次榦濕循環即可達到穩定狀態。相關成果可為膨脹土地區多層建築的地基處理提供參攷。
위료해남양지구팽창토재상견단층、다층건축하재하적팽창변형특점，개전료유하재조건하불동석회참량개성팽창토적팽창솔급수은정성시험연구。시험결과표명：참입석회개량후，팽창토적팽창솔현저하강，차수은정성대대제고，우기시당석회참량위3%시，기팽창솔저우1%，경력2~5차간습순배즉가체도은정상태。상관성과가위팽창토지구다층건축적지기처리제공삼고。
To understand the expansion deformation characteristics of expansive soil under single -story and multi -story building loading in Nanyang City, a series of experiments, in which the lime dosage was different, were carried out to research the expansion rate and water stability of lime modified expansive soil under loading conditions. The experiment results show that the expansive rate significantly decreases while the water stability is greatly improved by adding lime into expansive soil. Espe-cially, when the lime dosage is 3%, the expansive rate is under 1%, and the expansive soil can reach the steady state after 2 to 5 wet and dry cycles. The research results can provide reference for the foundation treatment of multi - story buildings in expan-sive soil area.
