Category: Concrete Services

What You Need To Know About Concrete


Concrete Colorado Springs is a construction material that can be molded into almost any shape. Its main ingredients are cement, water, and aggregates (like sand and gravel). It can be used to build a wide range of structures.

Aggregates comprise the majority of a concrete mixture and usually comprise sand or natural gravel. Rocks and recycled materials are also sometimes used as coarse aggregates. When the components are mixed, a reaction known as hydration takes place which provides strength to the concrete.


Concrete has long been a key building material and its strength is a critical factor for most structural designs. Its ability to resist the compressive forces of heavy vehicles is especially important. A weak concrete structure can become an accident hazard for pedestrians or, at worst, fail completely. This is why it’s important to consider the concrete PSI rating of a construction project before it’s begun. Concrete with a higher psi rating is more likely to withstand the loads of larger vehicles.

Concrete’s strength is determined by testing the concrete cylinders, or cubes, under compression. This method varies by mix design, size, and the age of the specimens when they are tested. The 28-day compressive strength of cylinders is the most commonly used value in structural concrete specifications and design codes. However, other properties of concrete are also specified, such as abrasion resistance or durability in harsh climates.

Another property of concrete that is important is its flexural strength. This is a measure of how much the concrete can bend before it fails. This is usually tested using a concrete beam. It is typically loaded in a way that places a concentrated load on the center or third point of the beam. The results are then compared to the compressive strength of the concrete.

To increase the strength of concrete, it’s important to use a high-quality aggregate and water. In addition, the concrete must be properly poured, compacted, and cured to achieve optimal strength. The curing process enables the cement to hydrate, and calcium silicate hydrate is formed, which adds to the concrete’s strength. The concrete must be kept moist during the curing process to ensure that the hydration takes place properly.

To improve the workability of concrete, it can be added with a number of different admixtures, including water reducers and superplasticizers. These admixtures make the mixture soupy for a short time, enabling it to be placed more easily. They also help to control the slump and provide a better flow. In addition, they are helpful in reducing the amount of water that is required to achieve the desired mix consistency. These admixtures can help save money and reduce environmental impact.

Concrete is a durable material that is used in construction for its strength, longevity and versatility. It can withstand weathering actions, abrasion and chemical attacks. It can also be reinforced with steel rods to improve its durability. However, it is important to know that concrete can deteriorate over time if it is exposed to the wrong conditions. Deterioration of concrete structures usually occurs due to the penetration and transport of harmful chemicals within the porous structure. These chemicals can cause various types of deterioration, including corrosion and spalling.

Durability of concrete is a complex phenomenon, and different environments require varying degrees of durability. Durability can be affected by factors such as mix design, water and cement hydration, aggregate reactivity, temperature, and curing. Concrete with a lower porosity and permeability is more resistant to deterioration. This is achieved by lowering the water-cement ratio and using finer aggregates.

Another way to enhance concrete durability is by adding a crystalline admixture, which is a chemical that forms needle-shaped crystals in the presence of water and un-hydrated cement particles. This reaction fills capillary pores and micro-cracks in the concrete to block pathways for water and waterborne contaminants. Concrete with this admixture is also self-sealing and requires less maintenance than concrete without it.

It is also possible to make concrete more durable by incorporating fibers into the mixture. These fibers may be made from a variety of materials, such as steel, polymer, glass, carbon or coconut fiber. These fibers can increase resilience, tensile strength and flexibility. They can also reduce cracking and abrasion.

During the design phase, concrete durability is determined by the structural calculations, details and materials. It is also determined during the construction process by the quality of the concrete, curing process and preventive measures. Preventative measures include the use of proper construction techniques and materials, and regular inspections and monitoring.

Concrete must be kept moist during curing to ensure adequate hydration and strength. This moisture is necessary for the hydration of calcium silicate hydrate (C-S-H), which accounts for over 90% of the final concrete strength. During the curing period, the alkali-silica reaction also takes place between the high alkali content in the concrete and the low silica content of the aggregates. This reaction can cause pop-outs, alkali-aggregate reactivity and permeability problems in concrete.

Concrete is a ubiquitous material in modern society, making up everything from pavements and sidewalks to bridges and dams. It is one of the most important and longest-lasting construction materials used in the world. It can be poured, pumped, sprayed and grouted to create structures that are strong, durable and versatile. It is also highly reusable and can be recycled to make new concrete.

Concrete is made from a mixture of filler and binder. The filler consists of fine and coarse aggregates, while the binder is composed of cement and water. The concrete can be manufactured at a plant or on-site using various methods and equipment, from hand tools to large industrial machinery. The key to concrete’s flexibility lies in its porosity and permeability. Porosity refers to the volume of pore space in the material, while permeability refers to how easily water or other liquids can pass through the concrete.

In addition to traditional raw materials, many industrial wastes can be used to produce concrete. For example, fly ash (also known as GGBFS or ground granulated blast furnace slag) can be used to replace some of the cement and aggregates in concrete. These recycled materials not only reduce the environmental impact of concrete production but also enhance its properties, such as tensile strength and resilience.

There are many different types of concrete, each with a different application and design. For example, lightweight concrete uses smaller, more porous aggregates and can be poured in thinner layers. This type of concrete is often used in buildings and pavements where a high level of tensile strength is not required.

Other industrial wastes can also be used to create lightweight concrete, such as glass and vehicle tires. In addition, chemical admixtures can be added to the mix to modify its properties, such as fluidity or set time.

ML has been used to model the behavior of concrete on a variety of scales, from molecular to macroscale. However, modeling at these scales is challenging due to the complexity and variability of real-world conditions. For example, the quality of raw materials may vary at different sites depending on local weather; mixing, transporting, placing, and curing conditions can all influence the behavior of concrete.

Concrete is the construction material of choice for a large number of residential and commercial buildings. It is used to build the skeleton of the building, from foundations and slabs to columns and beams. It is also safer than other types of building materials and needs less maintenance. Moreover, it has excellent heat and water resistance properties.

The cost of concrete varies, depending on the type and strength needed for a project. Some of the factors that influence the cost include the concrete mix type, the amount of cement used, the size and location of the concrete slab, and any other costs associated with the installation process. The best way to determine the cost of a concrete slab is to contact a local contractor and discuss the project requirements.

A cubic yard of concrete typically costs $117 to $147 per delivery. This price includes delivery and installation. Homeowners should also consider other project costs, such as site preparation and concrete removal. These additional costs can add up to a significant sum.

Aggregates are granular materials crucial to the concrete mixture. They offer a surface for the paste to stick to and account for 60 to 75% of the mix. They can be coarse, such as gravel or crushed rock, or fine, such as sand. The choice of aggregate depends on the final product desired, including durability and skid resistance.

Unlike wood and steel, concrete is inert and not susceptible to corrosion. It can also be molded into various shapes and sizes, which makes it ideal for construction projects. In addition, it is easy to transport and install. Concrete is also environmentally friendly, as it does not pollute the environment and is recyclable.

Although the use of concrete began benignly as a means of social development, it eventually morphed into a tool for political expediency and individual greed. The craze for concrete transformed the country into a “doken kokka” state, where government officials, party leaders and contractors all benefitted from a nexus that bound them together: politicians needed campaign donations and kickbacks from construction firms to get elected; bureaucrats needed new projects to keep their jobs; and construction bosses wanted more contracts to stay busy and keep their profits high.

The Importance of Masonry Repair

Retaining Walls Charleston SC is vital to keeping brick and stone buildings structurally sound. It also improves the aesthetic appeal of a building. Performing these repairs regularly prevents larger issues from developing and saves you money in the long run.

Whether you have a historic or modern masonry building, regular inspections are key to avoiding damage and the need for restoration. Here are some of the most common masonry issues to watch for.

Masonry is extremely durable, but like any other structure, it can experience wear and tear over time.

Cracks are a common problem when a masonry surface has been subjected to excessive stress or pressure. Masonry cracks can be repaired using a process known as repointing. This involves filling the cracks with a mortar mix that matches the existing material. Various mortar mixes can be used to repair cracks in masonry structures. Examples include lime, Portland cement, natural cement, pozzolans, and alternative cementitious materials.

The expansion and contraction of the bricks and the mortar most often cause cracks in masonry. Michigan homes are particularly prone to this issue because of the extreme temperature changes that occur in the state. This type of expansion and contraction can be due to moisture penetration or simply to the movement of the earth around the masonry. In either case, the cracks need to be repaired by a professional mason to prevent further damage to the masonry and to prevent safety issues for the building occupants.

If the cracks are limited to one or two bricks spread throughout the surface being repaired, they are likely not to be a sign of serious foundation damage. However, if the cracks run diagonally across the wall, they can indicate a problem with the footing of the brick structure or the soil it is resting upon. In this case, it is best to consult with a foundation expert.

In most cases, if the cracks in the masonry structure are increasing in depth or width, it is best to consult with a structural engineer to see what the root cause of the movement is and to take steps to resolve the problem. Stitching bars are sometimes used to repair cracks in brick walls, but they should only be employed as part of a comprehensive repair specification by a qualified engineering firm.

Staining is also a common problem that affects many masonry structures. This can be caused by various factors such as water penetration, aging of the bricks and mortar, or chemical staining from salts or other chemicals that have come in contact with the masonry. If the masonry is being repointed, it is important to match the color of the existing mortar and to use only the highest quality repair materials.

When a brick wall or other piece of masonry begins to loosen, it should be repaired immediately. Not only does it create a safety hazard, but the loosened brick could fall and damage property or cause injury.

Depending on the circumstances surrounding this issue, professional masonry services may be required to fix the problem and prevent further damage properly.

A brick wall can begin to loosen for many reasons, including physical damage and untreated water damage over time. These situations can also lead to frost damage and other structural issues that require professional masonry repair.

Brick is an incredibly durable material that lasts for decades, but it does have its limits. When a brick experiences extreme weather conditions, it can begin to spill. Spalling is when the surface of a brick becomes flaky and loses its texture. This can happen due to freeze-thaw cycles, salt, and other environmental factors.

When a wall is loosened, it is often because the mortar has become damaged. When the mortar breaks down, it allows moisture through the wall and hastens the deterioration of sound brick masonry. This is why it is important to tuckpoint, or patch, the mortar joints as soon as they become damaged.

A good tuckpointing job takes patience and skill but will prevent the need to replace bricks and can keep walls safe and attractive for years.

To start, clean the area where you will work with a stiff-bristled brush or wire brush to remove any existing mortar. Then, sweep the area and clean off any remaining loose pieces. This will prepare the surface for the new mortar.

Mix your mortar according to the directions on the package and use a trowel to apply it over the loose brick. Press the new mortar into place and then smooth it out to be flush with the existing brick.

Spray the newly repaired area with water to help the mortar cure correctly. Protect the area with plastic sheeting to retain moisture and help the mortar set. After the mortar has cured, it is important to apply a brick stain to protect it from the elements and to provide extra color and protection.

The chimney is a critical part of your home, facilitating the safe expulsion of combustion gases. While it is a vital component of your building, it can also require maintenance and repairs occasionally. This is why a regular inspection by a certified chimney mason is so important, as it allows you to address problems early on. Identifying masonry issues such as cracked bricks, crumbling mortar joints, and water damage is essential for the chimney’s health.

Chimneys are made of several materials, including brick, stone, concrete, flue tile, and cast iron. These materials can be vulnerable to several issues, such as leaks, cracks, crumbling, clogs, and erosion. Water damage is one of the most common issues that can impact masonry, as it causes rusting and rotting, stains, cracks, spalling bricks, and leaning chimneys. If left unattended, these issues can lead to major structural and safety concerns.

In addition to looking for obvious signs of masonry problems, it’s also important to conduct a thorough interior inspection. A thorough inspection includes examining the fireplace and firebox, as well as the smoke chamber, chimney liner, chimney crown, and more. If any of these components are damaged, a chimney mason can recommend the most effective repair methods to restore them to optimum performance and safety standards.

To spot masonry damage, conduct a visual inspection from the ground. Look for cracks in the bricks and mortar, and pay particular attention to the chimney crown. Moisture can easily corrode the mortar crown, and a large crack in this area can lead to a leaky chimney. A silicone-based masonry patch can repair hairline cracks in the chimney crown, but a full replacement is required for a severely damaged crown. A new chimney crown will protect the masonry structure, prevent moisture, and improve fire safety, carbon monoxide safety, and gas venting efficiency. A new flue liner will also enhance these aspects of the chimney, reducing fire risk and improving energy efficiency.

Masonry sealants fill gaps between concrete, glass, aluminum, and masonry walls. These sealants are very important for maintaining the structural integrity of a building, preventing leaks, and adding to the aesthetics of a structure. Different types of sealants are available, and each type has its unique properties. A good quality sealant can withstand stress and pressure, reducing the amount of wear and tear on the material it is sealing.

Joint sealants should be compatible with the masonry and other substrates to which they are applied. Before applying new sealants, the old or deteriorated sealant should be removed and the joints cleaned. Often, a primer is recommended to improve the bond strength of the sealant to the substrate. It is best to follow the manufacturer’s recommendations for each primer, as they may vary from product to product.
Control joints, joints around fenestration (doors and windows) and penetrations, and isolation joints (joints at dissimilar material interfaces) in concrete masonry walls rely on joint sealants to help preserve the weather-tightness of the overall building envelope. The performance of these masonry joints depends on their design and construction, the overall building envelope, and proper maintenance.

Joints in concrete masonry are exposed to cyclical tension and compression caused by thermal expansion and contraction of the concrete. The substantial movement in these joints requires an impermeable, elastic sealant to accommodate these movements. The type of sealant selected should be compatible with the masonry and other substrates to which it is being applied, be suitable for the climate in which it will be used, meet the building codes, and have a good reputation for service and durability.

Polysulphide and silicone sealants are the most popular types of masonry sealants on the market, as they offer a good level of elasticity. Polysulphide and silicone sealants are available in gun grade or pour grade, depending on the application. Gun grade should be used for inclined or vertical joints, and spray grade should be used for horizontal joints. Before using a new sealant, it is important to read the application instructions and consult with an expert to ensure that you are applying the correct product for your specific needs.

Concrete Repair Isn’t Hard to Do

concrete repair

Whether it’s a cracked sidewalk or a void underneath your foundation, fixing these problems now prevents bigger headaches in the future. Concrete Contractors Colorado Springs has the right materials and a little know-how.

First, you’ll need to clean the area with a brush or broom. Then, choose a product with low shrinkage and excellent adhesion to concrete.

concrete repair

When concrete cracks or voids are present in a structure’s foundation, floor, or wall, the underlying cause must be addressed to prevent future damage and repairs. These issues are best resolved by a professional contractor with access to the proper equipment and quality materials needed for concrete repair. A qualified contractor can also offer guidance for preventative maintenance to avoid future problems.

Different repair methods may be employed depending on the size of the crack, the type of concrete used in the structure, and the cause. If the crack is not filled, water can leak into the structure and lead to corrosion of steel reinforcing bars. This can result in major structural damage that must be corrected.

Use an epoxy or latex patching product to repair concrete cracks that are 1/8-inch wide or narrower (see example on Amazon). Apply the material with a mason’s trowel or putty knife and force it into the crack. Smooth the product level with the surrounding concrete, ensuring that the crack is filled from one end to the other. Allow the product to cure as the manufacturer directs; this can take an hour or a few days.

The surface of the cured concrete can be roughened by lightly sanding to help the repaired area blend in with the surrounding concrete. This step is optional but can add a finished look to the project.

A foam backer rod can be stuffed into the crack to take up some of the space, allowing less crack filler to be needed. This will also make the repair more stable while it dries and reduce the chances of shrinkage.

A polyurethane resin can be injected into the crack under pressure for larger wet or leaking cracks. This will react with the water, chasing it into the crack and foaming it to seal it and prevent future water leaks. This is an excellent method to stop water leaks in active and dormant concrete cracks.

Concrete structures that are cracked and void-filled can suffer from structural instability, deterioration, and even failure. This is why it is important to use proper repair procedures. This starts with a condition evaluation, where the structure is inspected, and the causes of the deficiency are determined. The results of this inspection will help determine the appropriate repair methods and materials.

One way to repair cracks is by routing and sealing them. This involves using a router to cut a V-shaped groove along the length of the crack, which provides a surface for bonding and stops water flow. Using a chemical grout or epoxy to fill the cracks is also possible, offering a waterproof seal and some added strength.

A more permanent solution is using cement patching material to fill the cracks. This material is mixed and spread in the cracks and can be used to restore the original form of the concrete. This can be done by hand or with a trowel. If a concrete patch is used, it is best to lay the patch down in layers of about 1/4 inch. This will ensure that the patch is thick enough to resist shear and bending stresses caused by traffic or other loads.

For serious and long-term problems, it is best to hire a professional concrete contractor to perform the repairs. This will guarantee that the problem is solved correctly and does not reoccur. The cost of hiring a professional is often cheaper than the cost of replacing a damaged concrete structure.

All factors contributing to the damage need to be addressed to make the most effective repair. For example, if the structure has a drainage problem, it must be fixed before the cracks can be repaired. Also, if the structure is subject to fire or elevated temperatures, it will need fireproofing to prevent it from failing due to these conditions.

Another consideration is that concrete repair should be environmentally responsible. Increasing the number of concrete repairs can lead to environmental degradation due to the depletion of natural resources and the production of large amounts of waste. Therefore, engineers should design eco-efficient repair systems that attain specified performance levels while minimizing these impacts.

Concrete is a popular, sturdy, multi-purpose building material that offers tons of bang for your buck. It’s great for foundations, warehouse floors, and walls. But just like any other building material, concrete needs maintenance to keep it looking and performing its best. One crucial form of upkeep specific to concrete is repairing expansion joints.

Expansion joints are cut into concrete slabs to allow the concrete to expand and contract with temperature changes without cracking the slabs. When these joints are left unfilled, they can dry out and become brittle. This can lead to the edges of the concrete separating and cracking and, creating trip hazards.

Typically, concrete expansion joints are filled with wood or a soft material that allows the joint to move. However, These materials only last briefly and can easily be pulled out or caught on equipment. As a result, they need to be replaced regularly.

The best way to repair a concrete expansion joint is to use a flexible sealant such as QUIKRETE Self-Leveling Polyurethane Sealant. Before sealing, it’s important to sweep out the joints and remove any pebbles, dirt, or debris. The area should also be cleaned with a scrub brush and a solvent-free rag. Once the joint is dry, a thin sealant layer is applied to both sides. Press a piece of backer rod into the joint to ensure that the sealant extends at least 1/8 inch into the concrete.

Concrete surfaces can become damaged from many causes, such as cracking due to shrinkage or tension, exposure to chemical products or oxidation, and improper construction practices. When the underlying cause is not addressed, damage to concrete will continue and may lead to serious structural problems. A professional contractor should always be consulted to perform the necessary repairs and correct the underlying problem.

Repairs of existing concrete structures are typically based on a condition evaluation, which includes the structure inspection, determining the causes of the deterioration or distress, and selecting repair methods and materials. In addition, consideration must be given to the effects of the repair on the remainder of the structure and the environment.

The surface should be clean, dry, and free of voids or protrusions when repairing concrete. Any hollow areas in the concrete should be filled with suitable repair material to avoid future water penetration and potential structural damage. The fixed concrete should be finished and textured to match the surface slope of the existing concrete.

Some important characteristics of repair materials are their dimensional stability, low drying shrinkage, and the ability to form a strong bond with the concrete matrix. Choosing repair materials with similar elastic modulus and thermal coefficients is also important. These factors are particularly important for thick sections of concrete, where heat generated during curing can cause thermal stress beyond acceptable limits.

Choosing the right repair material for a concrete project is critical to its success. It is recommended that a high-quality, commercial-grade concrete mix be used for all types of repairs. This mix type provides a better bond to the old concrete and is available in various strengths to accommodate different applications.

The best choice for a particular project will depend on the amount of repair work needed, the size and location of the repaired area, the extent of the deterioration or damage, the availability of equipment and tools for performing the repairs, and the budget. It is always a good idea to hire a professional contractor for large projects and repairs that need to be performed in high places, as these contractors have the proper safety equipment and experience to complete the job safely and quickly. They should also provide a warranty and insurance to cover any damages that may occur during the repair process.