INNOVATIVE GROUTING SOLUTIONS Seminario de la Beca: Dr. Ramon Carrasquillo, PhD, Reparaciones Estructurales: Soluciones Innovadoras PREPARED BY: JOSE R GAYA, P.E., M.ENG. Building Material Technologies April 8 2016
What Is Grout? BASIC DEFINITION: PARTICULAR FORM OF FLUID CONCRETE USED TO FILL GAPS WITH MULTIPLE USES
Grouting MULTIPLE APPLICATIONS GEOTECH
Grouting MULTIPLE APPLICATIONS EVERYDAY APPLICATIONS
Grouting For 1. Cementitous Grouts 2. Epoxy Resins 3. Polyurethans 4. Urethanes 5. Polymer Rubbers STRUCTURAL RESTORATION WATER CONTROL AND MITIGATION
Cement based grouts CEMENTITIOUS GROUTING: 1. Used efficiently to restore areas of structural elements 2. Compatibility of engineering properties a must 3.Can be injected into cracks does not benefit continuity 4. Form and Pump Method 5. Preplaced Aggregate Method
Cement based grouts FORM AND PUMP: 1. No limits on repair size 2. Pressurization consolidates the material 3. Formwork helpful for curing
FORM AND PUMP: Grouting For Cement based grouts Watertight Formwork Needed
FORM AND PUMP: Grouting For Cement based grouts
FORM AND PUMP: Grouting For Cement based grouts
FORM AND PUMP: Grouting For Cement based grouts
PREPLACED AGGREGATE METHOD: Benefits: 1. Low Drying Shrinkage 2. Point to point contact between coarse aggregates 3. Cement grouts or epoxy grouts
CRACK STABILIZATION Cracks at 45 Degree Angle CRACK STABILIZATION REPAIR STRATEGY What s the Desired Outcome? Visual Appearance Water control and Mitigation Performance Beyond our Scope
WATER ISSUES? Grouting For CRACK STABILIZATION Water Filtration Through Joint
CRACK STABILIZATION STRUCTURAL FAILURE? Failure
CRACK STABILIZATION HIGH HYDROSTATIC PRESSURES?
SHEAR CRACKS? Grouting For CRACK STABILIZATION Shear Failure Failure
STRUCTURAL CONTINUITY DURABILITY Shear Cracks Cracks = Tension Normal to Crack Plane Cracks Cracks Shear Cracks At 45 Degree angle
STRUCTURAL CONTINUITY DURABILITY Effects of Cracks Loss of structural continuity Reduction in structural capacity of an element Shear Cracks At 45 Degree angle Loss of continuity
STRUCTURAL CONTINUITY DURABILITY Effects of Cracks Entry point for harmful chemicals Advises on future collapse Shear Cracks At 45 Degree angle
Chemical Ingress Cracks STRUCTURAL CONTINUITY DURABILITY Chemical Ingress Shear Cracks At 45 Degree angle Delamination and Corrosion
Chemical Ingress STRUCTURAL CONTINUITY DURABILITY Shear Cracks At 45 Degree angle
STRUCTURAL CONTINUITY DURABILITY Correction of Cracks Pressure Inject or Gravity Feed Epoxy or MMA
Low Pressure Crack Injection Methods High Pressure STRUCTURAL CONTINUITY Pneumatic Gun Manual Gun Shear Cracks At 45 High Degree Pressure angleinjection Equipment DURABILITY
STRUCTURAL CONTINUITY DURABILITY EPOXY PASTE INJECTION PORT High Pressure Injection 1.Epoxy Paste Over Cracks 2.Injection Ports 3.Low Viscosity Injection Resin Shear Cracks At 45 Degree angle
STRUCTURAL CONTINUITY DURABILITY QUALITY CONTROL Visual Inspection Watch Highest Port Shear Cracks At 45 Degree angle Counterflow Start Injection At Lowest Point
STRUCTURAL CONTINUITY DURABILITY QUALITY CONTROL Laboratory Testing ASTM D695, Test Method for Compressive Properties of Shear Cracks Rigid Plastics At 45 Degree angle ASTM D638, Test Method for Tensile Properties of Plastics Start Injection At Lowest Point
STRUCTURAL CONTINUITY DURABILITY QUALITY CONTROL Field Tests ASTM C 881 Specification for Epoxy Adhesive Bonding Shear Cracks Systems for Concrete At 45 Degree angle Confirming Material will harden Injection Adhesive Tests Testing Two Component Injection Equipment Concrete Cores ASTM C 42
STRUCTURAL CONTINUITY DURABILITY QUALITY CONTROL 1 core every 30 Meters Adequate if 90% of Crack is filledcr ASTM C39 ASTM C 496 At Degree angle
STRUCTURAL CONTINUITY DURABILITY QUALITY CONTROL NON DESTRUCTIVE TESTING OPTIONSngle 1.ULTRASONIC PULSE VELOCITY 2.IMPACT ECHO 3.SPECTRAL ANALYSIS OF SURFACE WAVES
STRUCTURAL CONTINUITY DURABILITY Reminders on Crack Injection Does not address, the why!!!! Shear Cracks At 45 Degree angle
Reminders on Crack Grouting For Injection Reinforcement May Be Necessary STRUCTURAL CONTINUITY DURABILITY Shear Cracks At 45 Degree angle
Water Control Water causes unwanted chemical reactions in the concrete Shear Cracks At 45 Degree angle
Water ingress accelerates the corrosion process in structures Entry point for health issues such as mold Water Control Delamination Shear Cracks At 45 Degree angle Rust Marks Cracks with Water Filtration
Water Control and Mitigatioin Shear Cracks At 45 Degree angle
Water Control and Mitigatioin Above Ground Injection strategies/materials HMWMMA Polyurethane Grouts Below Ground Shear Cracks At 45 Degree angle Polyurethane Grouts Polymer Rubber Gels
Grouting For Above Ground Water Control and Mitigation
Above Ground Water Control and Mitigation Shear Cracks At 45 Degree angle Gravity Feed Application HMW MMA
Water Control and Mitigation Above Ground Repairing a Filtrating Shear Cracks At 45 Degree angle Construction Joint
Above Ground Water Control and Mitigation Shear Cracks At 45 Degree angle Gravity Feed HMW MMA
Water Control and Mitigation Above Ground Similar Process as Epoxy Injection Polyurethane Grout Injection
Above Ground Water Control and Mitigation
Water Control and Mitigatioin Below Ground/Under Hydrostatic Pressure Water Filtrating Through Construction Joints
Below Ground/Under Grouting For Hydrostatic Pressure Water Control and Mitigation Water Filtrating Through Construction Joints
Below Ground/Under Grouting For Hydrostatic Pressure Water Control and Mitigation Water Filtrating Through Construction Joints
Below Ground/Under Grouting For Water Control and Mitigation Use of Polymer Rubber Gel System Hydrostatic Pressure
Below Ground/Under Grouting For Water Control and Mitigation Use of Polymer Rubber Gel System Hydrostatic Pressure
Below Ground/Under Grouting For Water Control and Mitigation Use of Polymer Rubber Gel System Hydrostatic Pressure
Water Control and Mitigation Use of Polymer Rubber Gel System Below Ground/Under Hydrostatic Pressure Strategy in Blind Side WP: 1.Watch for counter flow 2.Fill voids where water can accumulate 3.Provide pressure release so water always flows 4.An on going process
Below Ground/Under Grouting For Water Control and Mitigation Use of Polymer Rubber Gel System Hydrostatic Pressure Counter Flow Grout Holes
Grouting For Water Control and Mitigation Use of Polymer Rubber Gel System Below Ground/Under Hydrostatic Pressure Drainage Pipes for Pressure Release
Below Ground/Under Grouting For Hydrostatic Pressure Water Control and Mitigation New Drainage System
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