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Specific grouting projects in the pre-alpine region
133A Grouts based on clays, cementitious and polymeric materials and their advantages in different conditions are briefly reviewed. A case study where a metal-fibre reinforced polymer based grout was chosen is discussed. 854224 Grouting: a method improving the bearing capacity of deep
Jeddah, Saudi Arabia. Preliminary pile tests indicated excessive settlement caused primarily by ground disturbance beneath the pile during construction. Chemical grout was injected in a controlled sequence to form an enlarged base of strengthened soil. Pile tests. with and without grout treatment, illustrate that high capacity shallow piles can be constructed more economically, with grout consolidation, than the much larger friction piles.
foundation
Bustamante, M; Gouvenot, D Proe 8th European Conference on Soil Mechanics and Foun-
854229
dation Engineering, Helsinki, 23-26 May 1983 VI, P131-134. Pub1 Rotterdam: A. A. Balkema, 1983
Stadler, G; Comte, C
Causes of deficient bearing capacity of deep foundations are noted. Grouting under high pressure, if properly performed, is an effective means of repair or reinforcement. Details of different grouting approaches and examples are presented and rules for estimating the bearing capacity gain due to grouting are proposed.
Specific grouting projects in the pre-Alpine region Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 1’1, P163-166. Pubf Rotterdam: A. A. Balkema, 1983
Six examples depicting successful applications in the field of alluvial grouting. The geological history of the ground to be treated and its stratified build-up as a sediment is most important and contributes to the pressure response during treatment.
854225 Large diameter bored piles with injected toe in Danube gravel
854230
Cernak, B; Hlavacek, J; Chlapik, P; Pospis, A; Matys, M
Influence of post-grouting on the load-bearing capacity of bored piles
Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 Vl, PI35140. Pub1 Rotterdam: A. A. Balkema, 1983
Large bored pile load tests are presented. Results show relatively low bearing capacity of piles reaching the loose to middle dense gravel layer. Differences in the bearing capacity of these piles were eliminated by injecting the soil under the pile toe. 854226 Grout mixtures for ground improvement - laboratory testing and quality control
Coumoulos, D G; Koryalos, T P Proc 8th European Conference on Soil Mechanics and Foundntion Engineering, Helsinki, 23-26 May 1983 VI, P141-146. Publ Rotterdam: A. A. Balkema, 1983
Laboratory testing procedures to investigate the properties of cement based grout mixtures in order to improve underground conditions and reduce and control permeability of the ground are presented. Results for flow cone. bleeding, consistency, gelation, time of set, compressive strength and pH characteristics are given for grout mixtures consisting ofcement and water with the addition of bentonite and/or clay. sodium silicate and, in certain cases, calcium chloride. 854227 Injection chemical stabilization of soils in construction practice
Kurdenkov, L I; Weber, I B Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, Pl51-1S2. Publ Rotterdam: A. A. Balkema. 1983
Account of a case history where the application of injected chemical stabilisation produced a supplementary foundation of stabilised soils under a building. The effectiveness ofthe method in eliminating nonuniform settlement of the foundations is indicated. 854228 improvement in base resistance of large diameter piles founded in silty sand
Littlejohn, G S; Ingle, J: Dadasbilge. K Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May? 1983 VI, p153-156. PubI Rotterdam:
A. A. Balkemu,
1983
Case history of the installation and performance of a chemical system for dense silty sand beneath shallow large diameter piles at the site of the New Corniche Centre,
groutconsolidation
Stocker, M Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, P167-I 70. Pub1 Rotterdam: A. A. Balkema, 1983
Description of the improvement of the bearing capacity of bored piles by post-grouting. This results in a permanent increase of skin friction and base resistance, caused by a firm interlocking of the concrete of the pile shaft with the surrounding soil and a compaction of the soil immediately around the shaft and the base of the pile. Values of skin friction and base pressure of post-grouted piles, derived from load tests, are compared with values for large diameter bored piles without postgrouting, small diameter pressure grouted piles and anchors. 854231 Squeeze grouting of stiff-fissured clay after a tunnel collapse
Vaughan, P R; Kennard. R M; Greenwood, D A Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, PI 71-176. Pub/ Rotterdam: A. A. Balkema, I983
A portion of the Tyler Hill railway tunnel. UK, collapsed in 1974. Backfilling of the tunnel and stabilisation by pressure grouting of the clay is described. Large grout takes occurred under gravity, then small multiple pressure injections were used to limit the extent of hydrofracturing. Measurement of heave gave excellent control, and grouting was stopped when significant heave showed that stresses had been restored to the theoretical maximum of overburden pressure. 854232 Chemical grouting utilized for underpinning and water control
Welsh, J P Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, P177-180. Pub1 Rotterdam: A. A. Balkema, 1983 A deep machinery pit was required to be installed inside an existing building between two high retaining walls and heavily loaded column footings. Chemical grouting was effectively utilized to underpin the footings, serve as an excavation support system and to provide a watertight barrier against groundwater infiltration. Crosshole Radar, Shear Wave Velocity Tests and Acoustic Emission Monitoring techniques are discussed, as is the pump-down dye test used prior to excavation. to verify the water tightness of the curtain.
Jeddah, Saudi Arabia. Preliminary pile tests indicated excessive settlement caused primarily by ground disturbance beneath the pile during construction. Chemical grout was injected in a controlled sequence to form an enlarged base of strengthened soil. Pile tests. with and without grout treatment, illustrate that high capacity shallow piles can be constructed more economically, with grout consolidation, than the much larger friction piles.
foundation
Bustamante, M; Gouvenot, D Proe 8th European Conference on Soil Mechanics and Foun-
854229
dation Engineering, Helsinki, 23-26 May 1983 VI, P131-134. Pub1 Rotterdam: A. A. Balkema, 1983
Stadler, G; Comte, C
Causes of deficient bearing capacity of deep foundations are noted. Grouting under high pressure, if properly performed, is an effective means of repair or reinforcement. Details of different grouting approaches and examples are presented and rules for estimating the bearing capacity gain due to grouting are proposed.
Specific grouting projects in the pre-Alpine region Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 1’1, P163-166. Pubf Rotterdam: A. A. Balkema, 1983
Six examples depicting successful applications in the field of alluvial grouting. The geological history of the ground to be treated and its stratified build-up as a sediment is most important and contributes to the pressure response during treatment.
854225 Large diameter bored piles with injected toe in Danube gravel
854230
Cernak, B; Hlavacek, J; Chlapik, P; Pospis, A; Matys, M
Influence of post-grouting on the load-bearing capacity of bored piles
Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 Vl, PI35140. Pub1 Rotterdam: A. A. Balkema, 1983
Large bored pile load tests are presented. Results show relatively low bearing capacity of piles reaching the loose to middle dense gravel layer. Differences in the bearing capacity of these piles were eliminated by injecting the soil under the pile toe. 854226 Grout mixtures for ground improvement - laboratory testing and quality control
Coumoulos, D G; Koryalos, T P Proc 8th European Conference on Soil Mechanics and Foundntion Engineering, Helsinki, 23-26 May 1983 VI, P141-146. Publ Rotterdam: A. A. Balkema, 1983
Laboratory testing procedures to investigate the properties of cement based grout mixtures in order to improve underground conditions and reduce and control permeability of the ground are presented. Results for flow cone. bleeding, consistency, gelation, time of set, compressive strength and pH characteristics are given for grout mixtures consisting ofcement and water with the addition of bentonite and/or clay. sodium silicate and, in certain cases, calcium chloride. 854227 Injection chemical stabilization of soils in construction practice
Kurdenkov, L I; Weber, I B Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, Pl51-1S2. Publ Rotterdam: A. A. Balkema. 1983
Account of a case history where the application of injected chemical stabilisation produced a supplementary foundation of stabilised soils under a building. The effectiveness ofthe method in eliminating nonuniform settlement of the foundations is indicated. 854228 improvement in base resistance of large diameter piles founded in silty sand
Littlejohn, G S; Ingle, J: Dadasbilge. K Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May? 1983 VI, p153-156. PubI Rotterdam:
A. A. Balkemu,
1983
Case history of the installation and performance of a chemical system for dense silty sand beneath shallow large diameter piles at the site of the New Corniche Centre,
groutconsolidation
Stocker, M Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, P167-I 70. Pub1 Rotterdam: A. A. Balkema, 1983
Description of the improvement of the bearing capacity of bored piles by post-grouting. This results in a permanent increase of skin friction and base resistance, caused by a firm interlocking of the concrete of the pile shaft with the surrounding soil and a compaction of the soil immediately around the shaft and the base of the pile. Values of skin friction and base pressure of post-grouted piles, derived from load tests, are compared with values for large diameter bored piles without postgrouting, small diameter pressure grouted piles and anchors. 854231 Squeeze grouting of stiff-fissured clay after a tunnel collapse
Vaughan, P R; Kennard. R M; Greenwood, D A Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, PI 71-176. Pub/ Rotterdam: A. A. Balkema, I983
A portion of the Tyler Hill railway tunnel. UK, collapsed in 1974. Backfilling of the tunnel and stabilisation by pressure grouting of the clay is described. Large grout takes occurred under gravity, then small multiple pressure injections were used to limit the extent of hydrofracturing. Measurement of heave gave excellent control, and grouting was stopped when significant heave showed that stresses had been restored to the theoretical maximum of overburden pressure. 854232 Chemical grouting utilized for underpinning and water control
Welsh, J P Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI, P177-180. Pub1 Rotterdam: A. A. Balkema, 1983 A deep machinery pit was required to be installed inside an existing building between two high retaining walls and heavily loaded column footings. Chemical grouting was effectively utilized to underpin the footings, serve as an excavation support system and to provide a watertight barrier against groundwater infiltration. Crosshole Radar, Shear Wave Velocity Tests and Acoustic Emission Monitoring techniques are discussed, as is the pump-down dye test used prior to excavation. to verify the water tightness of the curtain.