By Donald C. Hegebarth
Strain grouting is a vital development strategy that's practiced through contractors and engineers all over the world. Used because the nineteenth century, grouting reduces the quantity of leakage via rock for dam foundations and underground works. It additionally strengthens soils to supply a sturdy beginning to aid the burden of floor buildings, equivalent to constructions, bridges, and garage tanks. moreover, it's often used to fix deteriorated concrete and to provide concrete underwater. This guide introduces a number of sorts of apparatus hired in strain grouting functions played in geotechnical works and examines the working ideas and upkeep concerns relative to every apparatus kind. essentially meant for desktop operators and upkeep mechanics, this handbook also will end up helpful to specification writers, engineers, contractors, buying managers, and others who've a accountability to specify, gather, function, or keep strain grouting apparatus. issues lined contain mixers, agitators, pumps, supply platforms and add-ons, yet now not digital tracking and different ancillary gear.
Content:
entrance topic
• checklist of Figures
• record of Tables
• Preface
• desk of Contents
1. safeguard concerns
2. Cement Grouts
three. Mixers
four. Pumps
five. energy strategies
6. energy Transmission
7. Grout supply platforms
• Appendix: Grouting apparatus providers and brands
Index
• concerning the writer
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Additional resources for Grouting Equipment Manual - Selection, Operation, Maintenance, and Repair
Example text
Details of how reciprocating pumps are driven hydraulically are discussed in more detail in Chapter 6, Power Transmission. 15 Self-reciprocating hydraulic valve © 2013 by the Society for Mining, Metallurgy, and Exploration. All rights reserved. Pumps 39 26 13 15 17 20 18 5B 5C 12 Optional 30-Gallon Hopper 27 16 21 14 3A 22 6A 5 5A 7A 3 10C 6 4 10 6A 3A 1A 10E 22 19 8 10B 9 11 10A 7 3A 4 1 2A 2A 2C 2 2B 3 3 CG-030/A 1 Reducer (3" × 2" Victaulic) 1A Reducer Bolt (3⁄8–16×3¼") 2 2" Victaulic × 1¼" NPT (National Pipe Thread) Reducer 2A 2" Victaulic Coupling (with gasket) 2B 1¼" Part A Evertite Coupling 2C Grout Pressure Relief Valve 3 Staple Pin 3A Pin Coupling Gasket 4 25⁄8" Polyurethane Ball 5 15-Gallon Hopper 5A 30-Gallon Hopper (optional) 5B Screen for 15-Gallon Hopper 5C Screen for 30-Gallon Hopper 6 Ball Seat 6A O-Ring for Ball Seat 7 Tee 7A Hopper Ball Retainer (3⁄8–16×4½") 8 Sleeve 9 Air Cylinder Bracket 10 Piston Assembly (parts 10A to 11) 10A Piston Backer Plate 10B Piston Spacer Plate 10C Piston Cup 10D Nut 11 Piston Adapter 12 Exhaust Silencer 13 1" Filter/Regular/Lubricator 14 1" Regulator 15 1" Lubricator 16 1" Filter 17 1" Ball Valve 18 1" Air King Fitting 19 6" × 7" Air Cylinder 20 30 Mesh Air Filter 21 ½" Pneumatic Directional Control Valve 22 Air Bleeder Valve (directional control) 23 Pressure Gauge 24 1⁄8" Check Valve Source: ChemGrout 2012a.
Piston Pump Maintenance and Repair The procedures in this section are intended to be universal and applicable to piston pumps from any manufacturer. The only difference would be regarding details of assembly. Therefore, the instructions are somewhat general and will possibly lack the detail to be found in a manufacturer’s owners manual. In addition, the procedures herein will relate only to the fluid end of the pump, neglecting the drive end. 16 shows the parts pertinent to a typical grout pump.
Inspect and clean the parts, especially the discharge ball and ball seat. If the seat is grooved or worn, replace it. If the ball has nicks or grooves on its surface, replace it as well. 2. Disassemble suction (inlet) section of pump and perform the same inspection and cleaning procedure done in item 1. Replace worn parts. 3. Remove or disassemble the pump cylinder and inspect it for wear, pitting, scratches, or grooves. If grooves are not too deep, they may be removed by honing. If honing does not remove the grooves or pitting, replace the cylinder with a new part.