Risk Assessment of a Ready-mix Concrete Supply Chain ...

May 13, 2014 · Interviews with concrete batch plant managers and current demand, production, and delivery performance data served as input for analysis. We provided a systematic method that can be used by concrete suppliers to improve planning and delivery of ready-mix concrete. Different mitigation strategies were suggested based on our findings.

Dangers of Concrete Mixing on Building Sites

Mixing concrete on a building site can be a convenient yet troublesome process. The danger posed by concrete mixers is heightened when they are not properly operated and consistently maintained. This machine uses a rotating drum to mix the ingredients and form concrete for the building industry.

Cement & Concrete Hazards In Construction

Concrete Burns • Sand contained in fresh concrete is abrasive to bare skin • Portland is an alkaline. Strong bases (ph of 12-13) are just as hazardous as strong acids to the skin but have no initial signs of pain such as a burning sensation. • Drying Portland is hygroscopic – it absorbs water. Portland needs water to harden.

Concrete And Cement Dust Health Hazards - HASpod

May 28, 2019 · Whether you are mixing up a batch of concrete, using cement in other ways, or drilling into concrete materials, you may be exposed to cement and concrete dust. It might not be possible to eliminate cement and concrete, but it is possible to use cement and concrete safety by controlling the risks.


02 Introduction Cement is the most widely used binder for mortar and concrete used in civil constructions throughout the world. An estimate reveals that there are more than

Safety Measures while Using Concrete Mixer at Site!

Although one needs to be careful while operating any machinery during construction purpose, one needs to follow some strict guidelines where a concrete mixer is being used for construction. Always test the mixer by running it empty prior to the application.

Worker Safety Series - Concrete Manufacturing | Occupational ...

Oldcastle's plant manager credits employees on the shop floor. "We could be the best managers in the world, but the men on the front line need to embrace the safety culture," he observed. The Manchester facility manufactures and installs hollowcore plank and precast concrete structural systems throughout Western New York.

Concrete Plant - an overview | ScienceDirect Topics

A concrete plant needs to have storage facilities for cement, fine aggregates, coarse aggregates, chemical admixtures, and water. These ingredients need to be transported to the mixer. Typically, conveyor belts are used to transport materials in a concrete plant. Modern mixers are computer controlled.

Working Safely With Concrete

The A-B-Cs of fresh concrete's effect on skin are: Abrasive Sand contained in fresh concrete is abrasive to bare skin. B asic & portland cement is alkaline in nature, so wet C austic concrete and other cement mixtures are strongly basic (pH of 12 to 13). Strong bases-like strong acids-are harmful, or caustic to skin.

» Working with Concrete: Hazards and Resolutions

Aug 08, 2017 · Dry concrete contains silica, which can lead to severe health complications in the future. Understand the products you are working with and ensure that proper procedures are in place to minimize the effects of dry concrete exposure. Wet concrete may not put employees at risk in regards to silica, but the other risks at play are still severe.

Is concrete hazardous waste? Is concrete a hazardous material?

Materials like concrete not used at the jobsite and returned to the plant, fine concrete materials from concrete mixer truck washout, process water from concrete washing and production activities, concrete residue on the ground at a concrete plant, etc. So, is that concrete hazardous waste? That’s a bit more of a tricky answer.

Stormwater Best Management Practices: Concrete Washout

with concrete washwater can percolate down through the soil and alter the soil chemistry, inhibit plant growth, and contaminate the groundwater. Its high pH can increase the toxicity of other substances in the surface waters and soils. Figures 1 and 2 illustrate the need for better washout management practices. Best Management Practice Objectives

Betting on a new way to make concrete that doesn’t pollute ...

Dec 02, 2018 · “From my perspective the chemistry works, the mix works, the process works, “ said Warren Hilton, the plant manager. Image Premixed concrete being dispersed at a Holcim concrete plant in ...

Site Work Risk Assessment – Using A Cement/Concrete Mixer ...

Once you have hand-written your site task risk assessment form for using the cement/concrete mixer you may wish to revisit this electronic version to input your data. If you wish to enter more than 5 hazards on the form then right-click in an empty space within the bottom row and select the ‘Insert’ option.

Construction Research Congress 2014 ©ASCE 2014 1695

drivers that service the ready-mix concrete plant. Typically, a ready-mix concrete plant may own 25 to 30 trucks and plant operators will try to keep them busy at all times. b) Demand Fluctuation: Demand for ready-mix concrete fluctuates throughout the day, week, and year. At the time a contractor calls in an order to a ready-mix concrete plant ...

Code of practice for the concrete batching industry EM1305

Wet mix plants are those plants where concrete is pre-mixed in the plant before the mixture is loaded into the agitator truck, rather than raw materials being loaded dry, along with water, into the agitator bowl. These plants may be associated with either front end loader or overhead bin plants.

Best Practices Guidelines for Concrete Construction

39 Appendix A RMCAO Plant Certification Program 40 Appendix B OGCA Gold Seal Program 41 Appendix C Concrete Test Forms & Reporting - CMATS™ 43 Appendix D Concrete Quotation Form 44 Appendix E Mix Design Submission Form 45 Appendix F Checklist for Concrete Pre-Construction Meeting 66 Appendix G CCIL Concrete Certification Program

Example risk assessment: Bricklayers

Date of risk assessment: 6/3/2006 Example risk assessment: Contract bricklayers 2 of 5 pages Important reminder This example risk assessment shows the kind of approach a small business might take. Use it as a guide to think through some of the hazards in your business and the steps you need to take to control the risks.

Why Acid Etching Is No Longer Recommended as a Concrete Prep ...

Acid Etching Concrete Creates Only a Minimal Profile. Concrete Surface Profile, or CSP, as defined by the International Concrete Repair Institute (ICRI), is a standardized measure for the ‘roughness’ of a given concrete surface. This can range from CSP-1 (smoothest) to CSP-9 (roughest).

Gardening on Concrete With Raised Beds and Patio Containers

Apr 21, 2017 · Refresh the soil in subsequent years with new potting mix, and prune where necessary to ensure the best harvest possible. Peppers: Ensure plants receive at least eight hours of full sun. Plant smaller varieties in a 2-gallon pot. Larger varieties will need a 5- or 10-gallon pot. Beans: Plant bush beans in planters or pots with full sun.

Risk Assessment & Method Statement

M. Concrete operations Concrete burns 3 3 9 i. Avoid direct skin or eye contact with concrete. ii. Wash accidental splashes with clean water immediately. iii. Use additional PPE as advised by the COSHH assessment, rubber gloves mandatory. 3 1 3 N. Waste management Disease 3 4 i.12 COSHH register developed on site 3 2 6

Concrete Mix, Pour, and Placement Safety Program - SafetyInfo

Concrete mix and pour operations pose significant possible hazards to employees. This chapter sets forth safety requirements and hazard control for these operations. Policy. It is the policy of [COMPANY] that all concrete pour operations be conducted under the direct supervision of a competent supervisor.

Safe work with precast concrete | WorkSafe

Concrete test cylinders should be stored close to the precast concrete element so that they are kept in exactly the same conditions. Poor curing conditions (such as letting concrete dry out, or prolonged cold weather) can slow the strength gain of concrete. To minimise the risk of damage during handling:

When Is it Too Cold to Pour Concrete? | Hunker

Mar 31, 2019 · Concrete is one of the most versatile materials used in modern construction and one of the most important. While concrete can be poured at any time of year, there is an ideal range of temperature in which to pour concrete. If it's too cold or too hot outside, you will need to take precautions.

Concrete: the most destructive material on Earth | Cities ...

Feb 25, 2019 · After water, concrete is the most widely used substance on Earth. If the cement industry were a country, it would be the third largest carbon dioxide emitter in the world with up to 2.8bn tonnes ...

Curing Concrete Dos and Don'ts - Bob Vila

Protect new concrete from the cold for the first two to three days—up to a week, if it’s very cold—after which it should be strong enough to handle it without risk of damage. DON’T paint ...

Method Statement for In-situ Concrete & General Concrete Work ...

May 08, 2018 · This method statement for in-situ concrete & general concrete work describes the process to be implemented during the entire activity for such as in-situ concrete, concrete foundations, slab on grade, blindings, columns, beams, retaining walls, slabs, raft concrete, precast concrete, self-consolidating concrete, mass concrete and any structural concrete works. TheContinue Reading


CONCRETE FLAT ROOF 12.1 BACKGROUND Most roofs in Singapore are constructed using reinforced concrete which is known to have pores or capillary tracts. Depending on the designed strength, density and installation techniques, the number of pores can vary. These pores are interconnected within the concrete and water will penetrate through such

The problem with reinforced concrete

Jun 17, 2016 · Concrete is the third-largest contributor to carbon dioxide emissions, after automobiles and coal-fuelled power plants. Cement manufacturing alone is responsible for roughly 5% of global CO₂ ...

eLCOSH : Cement Hazards and Controls Health Risks and ...

Mix dry cement in well-ventilated areas. Make sure to work upwind from dust sources. Where possible, use ready-mixed concrete instead of mixing on site. When kneeling on fresh concrete, use a dry board or waterproof kneepads to protect knees from water that can soak through fabric.