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1. #ACI CONCRETE SLAB CRACK REPAIR HOW TO#
2. #ACI CONCRETE SLAB CRACK REPAIR PROFESSIONAL#
3. #ACI CONCRETE SLAB CRACK REPAIR FREE#

This signifies a potential major underlying issue that requires further analysis. There are multiple cracks throughout the section of concrete.

#ACI CONCRETE SLAB CRACK REPAIR PROFESSIONAL#

Cracks outside of the control joints and greater than 0.013-in should be repaired.īefore I discuss repair procedures, contact a professional if any of these situations are present: Therefore, a crack width gauge* should be used to measure the width of the cracks. Mass concrete thermal plans and temperature control systemsĪmerican Concrete Institute.A transparent crack width gauge* to measure a crack width.Ĭracks that are less than 0.013-in (or about the width of a credit card) are not susceptible to water penetrating into the concrete. Solutions to concrete slab moisture related issues and testing Generating roller compacted concrete in ready mix facilities Slab and pavement design and optimizationĬreating and implementing concrete related trainingĮducating engineers and contractors on state-of-the-art design criteria Planning and integrating finished and polished concrete decorative floors Specialties include items such as:ĭeveloping low shrinkage slab-on-grade mixtures Have experience with concrete mix designs, concrete slab-on-grade technologies as well as slip-form concrete pavements.ĬRT Concrete Consulting, LLC was founded in February of 2007 and focuses on a relationship- based approach to technical issues. Has considerable knowledge of the industry from working for a large concrete contractor, a construction manager, the Indiana Ready Mix Concrete Association and a ready mix producer.Īs Vice President of Production and Quality for a large ready mix concrete company, developed efficient and high quality ready mix operations. Professional Engineer OH, IN, KY, MI LEED AP ®ģ0 years of experience in the material, engineering and placement facets of concrete construction. Adequate supervision and inspection are required for job operations, particularly those of finishing.

A thorough preconstruction meeting is critical to facilitate communication among key participants and to clearly establish expectations and procedures that will be employed during construction to achieve the floor qualities required by the project specifications. Flatness/levelness requirements and measurements are outlined. It emphasizes such aspects of construction as site preparation, concrete materials, concrete mixture proportions, concrete workmanship, joint construction, load transfer across joints, form stripping procedures, finishing methods, and curing.

#ACI CONCRETE SLAB CRACK REPAIR HOW TO#

This guide describes how to produce high-quality concrete slabs-on-ground and suspended floors for various classes of service. Consequently, every owner should be advised by both the designer and contractor that it is completely normal to expect some amount of cracking and curling on every project, and that such an occurrence does not necessarily reflect adversely on either the adequacy of the floor’s design or the quality of its construction (Ytterberg 1987). Even with the best floor designs and proper construction, it is unrealistic to expect completely crack- and curl-free floors. Application of present technology permits only a reduction in cracking and curling, not elimination. This guide contains recommendations for controlling random cracking and edge curling caused by the concrete’s normal volume change.

Moreover, because the drying and cooling rates at the top and bottom of the slab are not the same, the shrinkage will vary throughout the depth, causing the as-cast shape to be distorted and reduced in volume. This phenomenon will continue as long as any water, heat, or both, is being released to the surroundings. Failure to address this issue can contribute to undesirable characteristics in the wearing surface such as cracking, low resistance to wear, dusting, scaling, high or low spots, poor drainage, and increasing the potential for curling.Ĭoncrete floor slabs employing portland cement, regardless of slump, will start to experience a reduction in volume as soon as they are placed. The timing of concreting operations-especially finishing, jointing, and curing-is critical. Properties of the surface are determined by the mixture proportions and the quality of the concreting and jointing operations.

#ACI CONCRETE SLAB CRACK REPAIR FREE#

The quality of a concrete floor or slab is highly dependent on achieving a hard and durable surface that is flat, relatively free of cracks, and at the proper grade and elevation. Join us to hear Indiana’s own Christopher Tull, PE of CRT Consulting discuss ACI 302.