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Five Types of Concrete Quality Tests

Concrete refers to a composite material that is essentially composed of elements such as cement, aggregates ( such as sand and gravel) joined together by water. The mixing proportions of the materials determine the strength and quality of the concrete.

 

Concrete is a requisite component of the construction process, therefore, it is important to subject it to quality tests to determine its condition.

 

Here are six important tests that help to determine the quality of fresh and hardened concrete:

 

a.  Water Permeability Test

A water permeability test is taken to ascertain the durability of the concrete and its resistance against water under hydrostatic pressure.

 

This type of test is taken from substructures concrete elements such as foundations, concrete water tank, retaining wall etc.

 

b.  Slump Test

Slump tests are taken to determine the workability and consistency of concrete. These tests are carried out from batch to batch to check the consistent quality of concrete during construction work.

 

 Factors such as moisture content, particle size distribution, air content and temperature could influence a slump test.

c.  Compressive Strength Test

Compression strength refers to the ability of a material to carry a compressive load without cracking or fracturing. A compression strength test, therefore, is a method used to measure the highest amount of compressive load a material can support.

 

The Compressive strength of concrete is dependent on constituents such as the cement strength, water-cement ratio, etc. The test is usually implemented on a cube, prism or cylinder.

 

d.  Rapid Chloride Ion Penetration Test

Similar to the Water Permeability Test, the  Rapid Chloride Ion Penetration Test is carried out to determine the durability of concrete. The test assesses the resistance of a concrete sample to the penetration of chloride ions.

 

e.  Air Content

Air entrainment is a significant component of concrete mixtures that are exposed to freezing and thawing environments, as it helps to ensure that the concrete is durable.

To measure the air content in fresh concrete, as well as the variation in the volume of concrete with a change in pressure, it is important to conduct an air contest test.

 

 

f.  Unit Weight

A unit weight test is done to measure the air content of a concrete mix and confirm that the volume of concrete is in accordance with the approved project mix plan. It is important to help you verify that you have the volume of concrete you requested.

 

At Geophase Resources Limites, we prioritise quality control and assurance, including standard concrete tests.

 

Interested in our services? Contact us: https://geophaseresources.com/ or visit our office, located at 13 Olufunmilola Okikiolu St, Allen, Ikeja.

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Erosion Control in Construction: What It Is and Why It Is Important

One of the significant threats to infrastructure is erosion. Erosion, in simple terms,  is defined as a geological process in which the extreme impact of natural forces (such as water and wind) and man-made forces, leads to the deterioration of earth surfaces.

 

Erosion is common in Nigeria and has ravaged homes, roads and other infrastructure for years.

 

What Is Erosion Control?

Erosion control refers to the measures that are taken to control and limit the risk of erosion. It involves practices that are aimed at preventing its occurrence in construction, agriculture and more.

 

Why Is It Important?

A publication in the International Journal of Erosion Control Engineering states that ‘Erosion is arguably the single most serious natural hazard in Nigeria, affecting nearly every part of the country but more aggressive in the southeastern part where it has killed people, torn roads in shreds, destroyed homes, schools, farmlands, and displaced poor people’.

 

Erosion is a factor that is detrimental to not just infrastructure, but individuals and inhabitants, as well.

 

Erosion Control in Construction

 

Erosion control plays a vital role in areas such as construction work, as it helps to ensure the preservation and protection of structures, as well as reducing the environmental impact of a construction project on the surrounding area. It involves innovative techniques such as the following:

 

a.  Observation of  the Construction Site

It’s very important to observe the construction site for any issues or potential risks. Doing this will enable construction officials to plan accordingly.

 

b.  Geotextiles

Geotextiles are absorbent materials that are used in, drainage, filtration, reinforcement, sealing, and protection, amongst others. These factors often influence the type of geotextile to be used. Geotextiles help in drainage, filtration and soil stability in construction projects.

 

c.  Riprap

Riprap refers to an erosion-proof layer of large stones interlocked together to act as a barrier to protect slopes, riverbeds and soil. Ripraps are often placed over geotextile to ensure that the soil does not ‘pipe’ or move through the riprap.

 

d.  Drainage Channels

Drainage channels such as the French Drain are useful in controlling erosion. The French Drain is a system that includes underground piping (known as a drain tile) that serves as a conduit for surface and groundwater to flow out. The drain tile may also be made penetrable to enable water to trickle into the soil below the tile, while excess water moves to the exit point.

 

e.  Mechanically Stabilized Earth (MSE) Walls

A Mechanically Stabilized Earth (MSE) refers to a compound solid structure that is made up of facing elements, soil mass and reinforcement. MSE walls are more effective than the conventional retaining walls and they are easier to install.

 

Geophase Resources involves innovative solutions and expertise to deliver excellent erosion control practices and other environmental consulting services. Visit https://geophaseresources.com/ or our office, located at 13 Olufunmilola Okikiolu St, Allen, Ikeja.