Behavior of a sand-polyacrilate mixture for seismic isolation

被引：0

作者：

Flora, A. ^{[1
]}

Bilotta, E. ^{[1
]}

Lirer, S. ^{[2
]}

Lombardi, D. ^{[1
]}

Nappa, V. ^{[1
]}

机构：

[1] Univ Naples Federico II, Naples, Italy

[2] Univ Roma Guglielmo Marconi, Rome, Italy

来源：

DEFORMATION CHARACTERISTICS OF GEOMATERIALS | 2015年 / 6卷

关键词：

Seismic isolation; soft grouting; numerical analyses; laboratory testing;

D O I：

10.3233/978-1-61499-601-9-1040

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Seismic isolation with traditional grouting is hardly effective. Recent results have shown that if a soft grout is used and a continuous barrier having a very low dynamic impedance is created, seismic isolation can be very effective. However, a soft, continuous barrier can cause undesired settlements of existing structures. This paper shows that, considering the barrier made of a mixture of soil and grout made using a Super Absorbing Polymer (SAP), desired values of dynamic impedance can be reached without causing any damage to existing structures. The paper reports also the results of some laboratory tests on SAP-sand specimens at different percentages of SAP, difficult to carry out because of the enormous deformability of the mixture.

引用

页码：1040 / 1048

页数：9

共 5 条

[1] Small Strain Shear Modulus of Undisturbed Gravelly Soils During Undrained Cyclic Triaxial Tests [J].