Concrete Repair JHA (Job Hazard Analysis / Activity Hazard Analysis)
Updated 2026-06-23
A Concrete Repair JHA (Job Hazard Analysis / Activity Hazard Analysis) is the plan that keeps the repair crew from breathing the silica generated removing deteriorated concrete, being exposed to the repair chemicals, or working under concrete whose structural integrity is compromised. Concrete repair removes damaged or deteriorated concrete and restores it with patching materials, bonding agents, and protective treatments — combining the silica of demolition and surface prep with repair chemicals and structural uncertainty. This guide walks through building a Concrete Repair JHA that names the silica, chemical, and structural hazards and assigns the dust-control, chemical, and structural controls that hold up in the field.
Why concrete repair needs its own JHA
Concrete repair restores deteriorated, damaged, or spalled concrete — removing the unsound concrete (by chipping, scarifying, hydrodemolition, or saw cutting), preparing the surface, treating or replacing corroded reinforcement, and applying repair mortars, bonding agents, and protective coatings. The hazards combine several families. Removing concrete generates respirable silica and the struck-by and noise hazards of demolition tools. The repair materials — bonding agents, epoxy mortars, corrosion inhibitors, coatings — carry chemical hazards. And repairing structural concrete raises the structural question: the element being repaired may have compromised integrity, and removing concrete can further weaken it. The combination of silica, repair chemicals, and structural uncertainty justifies a dedicated JHA.
Breaking concrete repair into steps
The steps for a Concrete Repair JHA follow the repair:
- Assess the structure and the extent of deterioration
- Confirm structural support and shoring where integrity is in question
- Remove the deteriorated concrete (chipping, scarifying, hydrodemolition)
- Manage silica and debris from removal
- Prepare the surface and treat reinforcement
- Apply bonding agents and repair materials
- Manage repair-chemical exposure
- Cure and protect the repair
Each step carries a hazard, and the concrete removal (silica) and the structural assessment are where the most serious risks concentrate.
The hazards step by step
Respirable silica from removal and prep
Removing deteriorated concrete and preparing the surface — by chipping hammers, scarifiers, grinders, and saws — generates substantial respirable silica. The controls follow the silica standard: wet methods or vacuum dust collection on the removal and prep tools, respiratory protection, and minimizing dry dust generation. Hydrodemolition (high-pressure water removal) reduces silica but introduces high-pressure water hazards. (These follow the concrete-cutting and surface-grinding fundamentals.)
Repair-chemical exposure
Repair materials — epoxy bonding agents and mortars, corrosion inhibitors, polymer-modified materials, coatings — carry chemical hazards including sensitization (epoxies), caustic exposure (cementitious repairs), and solvent vapors. The controls are reviewing the SDS for each product, chemical PPE, respiratory protection and ventilation where needed, and careful handling. (These follow the epoxy-flooring and concrete-finishing chemical fundamentals.)
Structural integrity
The concrete being repaired may have compromised structural integrity (that is why it is being repaired), and removing concrete — especially from a structural element — can further weaken it, risking collapse or falling concrete. The controls are a structural assessment before repair, shoring and temporary support where the element's integrity is in question or where removal will weaken it, removing concrete in a sequence that maintains support, and engineering involvement for structural repairs. Workers do not work under or rely on a structurally compromised element without support.
Demolition-tool, noise, and access hazards
The removal tools create struck-by, noise, vibration, and flying-debris hazards, and repairs occur at height and in confined spaces. The controls are the relevant tool, hearing, eye-protection, fall, and confined-space controls.
A simple Concrete Repair JHA structure
| Step | Hazard | Control | Standard |
|---|---|---|---|
| Assess structure | Structural collapse | Structural assessment, identify compromised integrity | OSHA 1926.850 |
| Shore as needed | Collapse during removal | Shoring/support where integrity in question | OSHA 1926.501 |
| Remove concrete | Respirable silica | Wet/vacuum methods on removal tools, respirator | OSHA 1926.1153 |
| Prep and treat rebar | Silica / cuts | Dust control, eye protection, gloves | OSHA 1926.1153 |
| Apply repair materials | Chemical exposure | Review SDS, chemical PPE, ventilation | OSHA 1926.59 |
| Work at height/confined | Fall / atmospheric | Fall protection, confined-space controls | OSHA 1926.501 / 1926.1203 |
Silica control and the structural assessment
A Concrete Repair JHA rests on silica control during removal and a structural assessment before the work. The silica control addresses the dust hazard — removing deteriorated concrete with chipping hammers, scarifiers, and saws generates substantial respirable silica, so wet methods or vacuum dust collection on the removal tools are essential. The structural assessment addresses the hazard that distinguishes repair from new construction — the element being repaired may have compromised integrity, and removing concrete can further weaken it, so the structure is assessed, shored where its integrity is in question, and concrete is removed in a sequence that maintains support. A JHA built on silica control and a structural assessment, with chemical controls for the repair materials, addresses the hazards that make concrete repair distinct.
From the field: what actually goes wrong
In fourteen years across federal, heavy civil, and industrial projects, concrete repair carries the silica hazard of any concrete demolition plus a structural hazard that new construction does not. The silica comes from removing the deteriorated concrete — chipping hammers, scarifiers, and saws generate substantial respirable silica, and the control is wet methods or vacuum dust collection on the removal tools, the same as any concrete cutting. Crews removing concrete dry without dust control face a serious exposure. Hydrodemolition reduces the silica but brings high-pressure water hazards of its own.
The structural hazard is the one specific to repair, and it is easy to underestimate. The concrete being repaired is deteriorated — that is why it is being repaired — so its integrity may already be compromised, and removing concrete from a structural element can weaken it further, risking collapse or falling concrete onto the crew. On the projects I have run, the discipline is a structural assessment before the repair, shoring and temporary support where the element's integrity is in question or where removal will weaken it, and removing concrete in a sequence that maintains support, with engineering involvement for structural repairs. Workers do not work under a compromised element without support. The repair chemicals — epoxies, bonding agents, coatings — add sensitization and vapor hazards handled with chemical PPE. The JHA that controls the silica and assesses the structure is the one that protects the repair crew.
The bottom line
A Concrete Repair JHA names the silica, the chemical, and the structural hazards with specific controls — wet or vacuum dust control on concrete-removal tools, chemical PPE for the repair materials, and a structural assessment with shoring where the element's integrity is compromised. The silica from removal and the structural uncertainty are what make repair distinct from new work. The JHA that manages both is the one that protects the crew.
Frequently asked questions
Why is concrete removal a silica hazard?
Removing deteriorated concrete and preparing the surface with chipping hammers, scarifiers, grinders, and saws generates substantial respirable crystalline silica. Controls follow the silica standard — wet methods or vacuum dust collection on the removal and prep tools, respiratory protection, and minimizing dry dust. Hydrodemolition reduces silica but introduces high-pressure water hazards.
What structural hazard does concrete repair involve?
The concrete being repaired may have compromised structural integrity (the reason for the repair), and removing concrete — especially from a structural element — can further weaken it, risking collapse or falling concrete. Controls are a structural assessment before repair, shoring and temporary support where integrity is in question, removing concrete in a sequence that maintains support, and engineering involvement for structural repairs.
Are concrete repair materials hazardous?
Repair materials — epoxy bonding agents and mortars, corrosion inhibitors, polymer-modified materials, and coatings — carry chemical hazards including sensitization (epoxies), caustic exposure (cementitious repairs), and solvent vapors. Controls are reviewing the SDS, chemical PPE, respiratory protection and ventilation where needed, and careful handling.
Can workers work under a structure being repaired?
Not under or relying on a structurally compromised element without support. Where the element's integrity is in question or removal will weaken it, shoring and temporary support are installed, and the structural assessment determines what support is needed before workers are beneath or dependent on the element.
Related JHAs
- Concrete Surface Preparation JHA — preparing surfaces for repair
- Demolition Work JHA — removing concrete and structural hazards
- Epoxy Crack Injection JHA — repairing cracks by injection
- Core Drilling and Concrete Saw Cutting JHA — cutting and silica control
Written by Mustafa Tok, CSP, ASP, CHST — OSHA Authorized Outreach Trainer with 14+ years of international construction safety experience across federal, heavy civil, and industrial projects.