About Us

MINEVIK Machinery is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants and beneficiation plants.

large-scale crushing & screening plants and beneficiation plants.

All of our equipment have got ISO international quality system certification, European Union CE certification and Russian GOST certification.

  • In central China-Zhengzhou, covering 140 thousand square meters
  • Win-win cooperation and create more value to customers
  • Exported large quantities and high-end mobile crushing plant and milling equipments to Russia, Kazakhstan, Indonesia, Ecuador, South Africa, Nigeria, Turkey more than 100 countries .

Ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum

Our Products

AS a leading global manufacturer of crushing and milling equipment, we offer including quarry, aggregate, grinding production and complete stone crushing plant. We also supply individual crushers and mills as well as spare parts of them.

Services

Our goal is to guarantee the excellent operation equipment with high safety for our customers and minimize the downtime of the machine by predictive maintenance. Kefid service and original accessories can be 100% trusted at the time of maintenance.

SERVICE AND SUPPORT

Minevik service and original accessories can be 100% trusted at the time of maintenance.

ACCESSORIES CENTER

striving to enable customers to get the parts in the nearest place.

SALES MARKET

Our sales market is spread all over more than 100 countries and regions

surface cracks in concrete

[randpic]

Concrete Slab Surface Defects: Causes, Prevention, Repair

construction force cracks to occur in places where they are inconspicuous. Cracks that occur before hardening usually are the result of set-tlement within the concrete mass, or shrinkage of the surface (plastic-shrinkage cracks) caused by rapid loss of water while the concrete is still plastic (Fig. 2).

More
[randpic]

Crack Evaluation and Repair| Concrete Construction

Dec 21, 2011· Cracking of concrete flatwork is natural, expected, and accepted. However, cracks may affect appearance, performance, and maintenance costs. For these reasons, building owners commonly want cracks in interior and exterior slabs repaired. Before choosing a crack repair option, concrete

More
[randpic]

Types of Cracks in Concrete and Typical Causes | GSA

D-Cracking: Cracks that runs roughly parallel or stem from a concrete joint and are deeper than surface cracks. Due to moisture infiltration at the joint. Offset cracking: Cracks where the concrete on one side of the crack is lower than the concrete on the other side.

More
[randpic]

Does Freshly Poured Concrete Normally Crack? | Angie's List

Dear Angie: I just had a new concrete driveway poured and the very next morning, several cracks showed up in the concrete.My contractor says that this is normal and will not affect the integrity of the concrete. My contractor had a representative from the material supplier come out and take a look and he also said that this was normal.

More
[randpic]

Cracks In Concrete Holcim Australia Pty Ltd

The rapid evaporation which causes this cracking can be checked by windbreaks, shading and surface treatments. Vertical cracks may be caused by the settlement of concrete around reinforcing bars. Such cracks occur when the concrete near the surface takes a partial set while the rest of the concrete

More
[randpic]

How to Prevent Cracks in Concrete? Causes & Repairs of

The American Concrete Institute as per ACI 302.1-04 addresses this issue, even the best construction & concreting cannot prevent cracking in concrete, and 0% cracks is an unrealistic thing. Causes of Cracks in Concrete. Causes of cracks in concrete can be many summarized as: Concrete expands and shrinks due to temperature differences

More
[randpic]

How to Repair Wide Cracks in Concrete thebalancesmb

Dec 27, 2018· Very small cracks, such as hairline cracks, can be repaired using a vinyl concrete patching compound applied over the crack and then smoothed with a putty knife or trowel. For hairline cracks, applying repair caulk or crack filler over the cracks usually is not effective, as the caulk tends to peel off of the surface over time.

More
[randpic]

Is Cracked Concrete Bad News? NBI May Newsletter

Concrete is strong once cured, but still has weight limits. Premature Drying . If the top of the concrete slab dries too quickly, crazing cracks can form. These are very fine surface cracks that resemble spider webs or shattered glass. Crazing cracks can be unsightly, but are not a structural problem.

More
[randpic]

CFA: Concrete Cracking Overview

Surface moisture evaporates faster than it can be replaced by rising bleed water, causing the surface to shrink more than the interior concrete. As the interior concrete restrains shrinkage of the surface concrete, stresses can develop that exceed the concrete's tensile strength, resulting in surface cracks.

More
[randpic]

How to Repair Concrete Cracks | how-tos | DIY

To use the concrete filler, cut the nozzle off the bottle and slowly fill the cracks (image 1). If you're using mixed concrete patch, mix according to the manufacturer's direction and then trowel the patch into the crack (image 2). Check the cracks in a few minutes to see whether the filler has settled.

More
[randpic]

How to Repair Concrete Cracks | how-tos | DIY

To use the concrete filler, cut the nozzle off the bottle and slowly fill the cracks (image 1). If you're using mixed concrete patch, mix according to the manufacturer's direction and then trowel the patch into the crack (image 2). Check the cracks in a few minutes to see whether the filler has settled.

More
[randpic]

What is Crazing in Concrete? Causes and Prevention of Crazing

Jul 15, 2014· What is Crazing in Concrete? Crazing in concrete is the development of a network of fine random cracks or fissures on the surface of concrete caused by shrinkage of the surface layer. These cracks are rarely more than 3mm deep, and are more noticeable on

More
[randpic]

Surface Cracking| Concrete Construction Magazine

We have been experiencing a considerable amount of surface cracking. How can this be prevented? This type of cracking often occurs in freshly placed concrete due to rapid evaporation of moisture from the concrete surface and is commonly referred to as plastic-shrinkage cracking.

More
[randpic]

How to Evaluate Cracks in Poured Concrete Slabs

Floor slab & tile crack diagnosis & repair: This article describes the types of cracks that occur in poured concrete slabs or floors and explains the risks associated with each, thus assisting in deciding what types of repair may be needed.

More
[randpic]

Cracks in Concrete | What You Need To Know About Concrete

Concrete frequently cracks no matter how well the contractor has done his job. Despite concrete’s unmatched surface durability, it is susceptible to the damage associated with annual freeze/thaw cycles. Some concrete cracks are no problem, but others can allow moisture to come up through the slab and damage flooring and perhaps some furnishings.

More
[randpic]

Concrete Cracks Preventing Concrete from Cracking The

Preventing Concrete Cracks Construction tips for ensuring durable, high-strength, crack-resistant concrete. Perhaps this section should be titled, "Attempting to Prevent Concrete Cracks", or "Minimizing Concrete Cracks", as it is impossible to guarantee against cracking.

More
[randpic]

How can I Repair Cracks in Concrete? (with pictures)

May 05, 2019· "perhaps the most common cause of cracked concrete is standing water" cracks in concrete can also be caused by unevenly dense subsurfaces below the slab. for example, if some areas below the concrete are soft and compressible and others are firm, the uneven settling could cause cracks over time.

More
[randpic]

CIP 3 Crazing Concrete Surfaces

CIP 3 Crazing Concrete Surfaces WHY Do Concrete Surfaces Craze? WHAT is Crazing? Crazing is the development of a network of fine ran-dom cracks or fissures on the surface of concrete or mortar caused by shrinkage of the surface layer. These cracks are rarely more than 1/ 8 inch [3 mm] deep and are more noticeable on steel-troweled surfaces. The

More
[randpic]

How to Renew Concrete Surfaces | This Old House

Patch all cracks, crevices, and holes in the old concrete surface. For hairline cracks up to 1/8 inch wide, mix four parts of Ardex Concrete Dressing to one part water. Force the thick paste into the cracks with a putty knife. For larger cracks up to 1/2 inch wide, use concrete-repair caulk. Step Seven // How to Renew Concrete Surfaces.

More
[randpic]

CIP 4 Cracking Concrete Surfaces

CIP 4 Cracking Concrete Surfaces WHAT are Some Forms of Cracks? Concrete, like other construction materials, contracts and expands with changes in moisture and tempera-ture, and deflects depending on load and support condi-tions. Cracks can occur when provisions to accommo-date these movements are not made in design and con-struction.

More
[randpic]

Shrinkage Cracks in Concrete InterNACHI

Shrinkage cracks are not continuous through the slab, but are actually cracks in the concrete surface. Corrosion: When reinforcement steel is placed too near the surface, it can corrode. Expansion results as steel is converted to iron oxide through corrosion. This expansion can crack the concrete surface.

More
[randpic]

Concrete Surfaces Crack Repair Sherwin-Williams

Apr 07, 2017· One of the most common problems when it comes to concrete is cracking. Walk through the right products and basic tools needed to repair most cracks and give aging concrete

More
[randpic]

How to Repair a Hairline Crack in a Concrete Driveway

Your concrete driveway is strong and durable and, if maintained, will give you many years of service. When occasional hairline cracks occur, a simple repair will get your driveway looking good and

More
[randpic]

10 Minute Concrete Mender Crack Repair

Jun 16, 2008· How to repair cracks in concrete floors permanently in as little as 10 minutes. Works on all industrial type floors and even in freezing temperatures. Ultra low viscosity polyurethane gravity

More
[randpic]

Shrinkage Cracks in Concrete InterNACHI

Shrinkage cracks are not continuous through the slab, but are actually cracks in the concrete surface. Corrosion: When reinforcement steel is placed too near the surface, it can corrode. Expansion results as steel is converted to iron oxide through corrosion. This expansion can crack the concrete surface.

More
[randpic]

Concrete Surfaces Crack Repair Sherwin-Williams

Apr 07, 2017· One of the most common problems when it comes to concrete is cracking. Walk through the right products and basic tools needed to repair most cracks and give aging concrete a fresh appearance

More
[randpic]

How to Repair a Hairline Crack in a Concrete Driveway

Your concrete driveway is strong and durable and, if maintained, will give you many years of service. When occasional hairline cracks occur, a simple repair will get your driveway looking good and

More
[randpic]

Repairing Cracks in Vertical Concrete Surfaces | QUIKRETE

Slowly draw the gun down the crack, forcing a bead of Concrete Repair caulk deep into the crack. TIP: Concrete Repair can be tooled with a trowel to match the surrounding surface immediately after placement. It will begin to form a skin in about 20 to 40 minutes and

More
[randpic]

Types of Concrete Cracks & Causes of Cracks in Concrete

The application of high load on concrete can also result in cracks; Improper compaction of surface below can result in settlement of the underlying soil, causing concrete above to get cracked. If the concrete is not poured monolithically it also causes development of a construction joint in concrete which can appear as crack, if not properly

More
[randpic]

Cracks in Structural Concrete ASCC

Cracks in Structural Concrete ASCC Position Statement #33 Some concrete professionals believe that rein-forced concrete structures should not crack. With that belief, when cracking does occur, they often claim that the concrete contractor caused the cracks and should pay for repair. Cracks in rein-forced concrete, however, are not a defect but are

More
[randpic]

Cracks In a Concrete Garage Floor: When Are They Serious

New Homes’ – Cracks that occur in the first few months or years. Shrinkage cracks. When a garage floor is first poured, the concrete begins to harden (contractors say cure) and when this process takes place the concrete shrinks a little; a 20 foot square of freshly poured concrete will shrink about a 1/8 of an inch in each direction.

More
[randpic]

I had a stamped concrete patio installed and is it normal

Is it "normal" for a stamped concrete patio to have multiple surface cracks and flake off? Do I need to do anything about these small cracks in stamped concrete patio before staining? My 2 month old stamped concrete seems to be crumbling, is this normal?

More
[randpic]

5 REASONS WHY CONCRETE CRACKS WiseCracks

Nov 17, 2017· 5 REASONS WHY CONCRETE CRACKS. November 17, 2017 by Wise Cracks Foundation and Cement Repair. We often get asked about the causes behind concrete cracks. Customers wonder why they can appear even in a newly poured foundation. A homeowner will question why it is cracking and wonder if they received substandard workmanship or products.

More
[randpic]

WHAT CAUSES CRACKS IN CONCRETE AND HOW TO PREVENT IT

Mar 25, 2015· Hair cracks are the result of unequal shrinkage of the surface concrete and the mass behind it. Delayed finishing and final floating of concrete can avoid these cracks up t o a certain limit. Surface cracks are also caused by surface dressing with a mortar having too rich in cement. Too much water, insufficient curing, or from over trowelling.

More
[randpic]

10 Minute Concrete Mender Crack Repair

Jun 16, 2008· How to repair cracks in concrete floors permanently in as little as 10 minutes. Works on all industrial type floors and even in freezing temperatures. Ultra low viscosity polyurethane gravity

More
[randpic]

Things You Should Know about Cracks in Slab Foundation

Alternatively, air pockets trapped near the surface can also cause this expansion. Pieces of the surface crack and are pushed out, causing small, shallow blisters that riddle the concrete surface. This could mean a crack in slab foundation. 6) Spalling. Yet another kind of surface depression, but larger and deeper than scaling.

More
[randpic]

foundation Is it normal to find cracks in new concrete

Concrete will crack naturally on its own unless it is given a place to crack such as control joint or expansion joint. As the concrete is curing it is heating up and expanding. In the summer time, I have seen the slab crack before being able to walk on it. Regarding footprints, it is tacky.

More
[randpic]

Cracks and Crack Control in Concrete Structures PCI

Special Report Cracks and Crack Control in Concrete Structures Fritz Leonhardt Professor Emeritus Dr.-Ing. Dr.-Ing. h.c. mull. Consulting Engineer Stuttgart, FRG The material presented in this paper is based on more than 30 years of re-

More

Contact

When we get your inquiries, we will send tailored catalogue, pricelist, delivery, payment terms and other,required details to you by email within 24 hours..