Influence of Surface Scaling on the Performance of Cement

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Influence of Surface Scaling on the Performance of Cement ...

Causes of Scaling of Concrete Pavement Surface The major causes of scaling of concrete pavement slabs include; Poor quality concrete mix (which may be due to

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Prevent Scaling - Portland Cement Association

Ultra-High Performance Concrete Example of scaled concrete surface. Scaling is defined as a general loss of surface mortar or mortar surrounding the coarse

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Scaling Concrete Surfaces — What, why, how? –

Scaling is local flaking or peeling of a finished surface of hardened concrete as a result of exposure to freezing and thawing. Generally, it starts as localized

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Scaling Concrete Surfaces

Scaling Concrete Surfaces Technical information prepared by Ohio Concrete SCALING: Scaling, as defined by ACI Committee 116R, is the ‘local flaking or peeling

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REPAIR OF SCALED SURFACE AREAS OF NEWLY CONSTRUCTED

Influence of surface scaling on the performance of cement concrete roads, New Building Materials Construction World, March 2018. Distress Identification manual for

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What is concrete scaling and its problems - Concrete ...

The Concrete Scaling is peeling and flaking of finishing surface of a hard concrete exposure thawing freezing. Extend to expose largest areas generally its

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Repair of Scaled Surface Areas of Newly Constructed Cement ...

Influence of surface scaling on the performance of cement concrete roads, New Building Materials Construction World, March 2018. Miller, J.S., and Bellinger, W.Y.

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Prevent Scaling - Portland Cement Association

Ultra-High Performance Concrete Example of scaled concrete surface. Scaling is defined as a general loss of surface mortar or mortar surrounding the coarse aggregate particles on a concrete surface. This problem is typically caused by the expansion of water due to freezing and thawing cycles and the use of deicing chemicals; however, properly ...

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Surface Scaling Resistance of Concrete Subjected to Freeze ...

Jan 01, 2017  The increased susceptibility to surface scaling was observed for three concretes when loaded, although they had different resistance to surface scaling. The influence of tensile stress on scaling was more obvious after 14 cycles of the freezing and thawing for concrete N (without air-entraining agent) and after 28 cycles for air-entrained ...

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(PDF) INFLUENCE OF WETTED LIGHTWEIGHT AGGREGATE ON SURFACE

The subject of the investigation was the influence of pre-wetted lightweight aggregate on damage of the concrete surface due to cyclic freezing and thawing in the presence of de-icing salts tested ...

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INFLUENCE OF PRE-WETTED LIGHTWEIGHT AGGREGATE ON

the structure of concrete surface layers is more dense, reducing the water evaporation and the diffusion process becomes slower. The surface of concrete with lightweight aggregate will be denser than of traditional high performance concretes [6], and therefore more resistant to scaling. Laboratory tests

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INFLUENCE OF SILANE PENETRATING SEALER ON DEICER

Concrete pavements generally show excellent performance; however, some have shown premature joint degradation at young age in recent years. There are many causes of premature deterioration including poor mix designs, reaction with deicers, and to fluid absorption. This study discusses the scaling on the surface of concrete produced using

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Overview of Problems with Deicer Scaling Test Methods

The scaling resistance of any concrete will be impaired if it is of poor quality, has an inadequate air-void system, bad aggregates or is subjected to poor construction practices. This is a consequence of bad concrete and not fly ash or slag usage Air-entrained concrete with up to 30% fly ash or 35% slag

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Project Title: C-06-22 Evaluation of Bridge Deck Concrete ...

environmental parameters on freeze-thaw accelerated de-icing salt scaling in concrete, (ii) to understand the influence of tensile strength development of concrete on scaling resistance, (iii) to assess the significance of concrete surface microstructure on the scaling resistance and the factors that contribute to the development of a surface ...

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4. DURABILITY PERFORMANCE OF UHPC - Michigan

powder content has little influence on performance. 4.2. EXPERIMENTAL PARAMETERS 4.2.1. UHPC Mix Designs ... The freeze-thaw resistance of the ultra-high performance concrete specimens was tested in ... scaling after 28 cycles measures surface scaling resistance of the specimens. For all nine

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EVALUATION OF CURING COMPOUND APPLICATION TIME

application times with respect to concrete scaling resistance. Untreated specimens from each mix type were cured in a wet room and tested as controls. A secondary goal of this project was to evaluate a new method for determining the presence of bleed water on a concrete surface by constructing a device to detect changes in the

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Influence of Shrinkage-Reducing ... - concrete.nist.gov

surface tensions −372 −310−3,54 10 , and 38 10 N/m . Fur-ther details are provided in the following sections. While Tetra-guard AS20 was the SRA used in this study; the results and conclusions presented can be extended to other surface tension or viscosity altering admixtures. A mixing procedure was used in preparation of the cement

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Freeze-Thaw Durability of Air-Entrained Concrete

Mar 21, 2013  One of the most damaging actions affecting concrete is the abrupt temperature change (freeze-thaw cycles). The types of deterioration of concrete structures by cyclic freeze-thaw can be largely classified into surface scaling (characterized by the weight loss) and internal crack growth (characterized by the loss of dynamic modulus of elasticity). The present study explored the durability

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General Principles: Causes of Concrete Deterioration ...

The two main factors that influence concrete performance are: Placement Issues ; ... which are random shallow cracks on the surface of the concrete. ... When the water in the pores freezes, it expands, causing scaling and delaminations.

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CRD-SCM Report to ACI

influence of the temperature cycle characteristics on the de-icer salt scaling performance of concrete (rate of freezing, minimal freezing temperature and length of freezing period). The second task is focused on the systematic study of the effects of various curing regimes on the de-

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Environmental impact of concrete - Wikipedia

The environmental impact of concrete, its manufacture and applications, are complex.Some effects are harmful; others welcome. Many depend on circumstances. A major component of concrete is cement, which has its own environmental and social impacts and contributes largely to those of concrete.. The cement industry is one of the main producers of carbon dioxide, a potent greenhouse gas.

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Factors Affecting Durability of Concrete Surfaces

surface treatments was to determine the effectiveness of the product in the prevention of surface scaling caused by deicing chemicals. Linzell (1, pp. 95-96) has reported that the Ohio Department of Highways experi­ mented with-surface treatments in 1941. A mixture of linseed oil and kerosene was ap­

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Mechanical and Durability Properties of Portland Limestone ...

Feb 14, 2021  Scaling is the removal of a concrete surface in repeated freezing and thawing environments, and mainly occurs in concrete structures where salt is used as a de-icing agent. There are four theories involved in scaling of concrete: osmotic pressure theory, hydraulic pressure theory, critical saturation degree theory, and water absorption theory ...

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General Principles: Causes of Concrete Deterioration ...

The two main factors that influence concrete performance are: Placement Issues ; ... which are random shallow cracks on the surface of the concrete. ... When the water in the pores freezes, it expands, causing scaling and delaminations.

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Influence of Shrinkage-Reducing ... - concrete.nist.gov

surface tensions −372 −310−3,54 10 , and 38 10 N/m . Fur-ther details are provided in the following sections. While Tetra-guard AS20 was the SRA used in this study; the results and conclusions presented can be extended to other surface tension or viscosity altering admixtures. A mixing procedure was used in preparation of the cement

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Salt scaling resistance and microstructure analysis of fly ...

Aug 15, 2021  Influence on the characteristics of the micro-pore structure of concrete surface (0–10 mm) Fig. 3 shows the micropore characteristics. Fig. 3 (a) shows the average relative volume and relative proportion of the water-cured group and the seal-cured group without the impregnating agents.

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Performance of concrete exposed to freezing and thawing in ...

Salt scaling tests were performed using 3 selected de‐icing salts on 3 different types of concrete. The mass scaled off the surface was weighed after every 5 freeze‐thaw cycles. The results obtained show that a CaCl 2 solution has the most destructive effect upon concrete performance, regardless of the type of concrete. Deterioration was ...

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Buildings Special Issue : Advanced Concrete Materials in ...

A clear correlation between sorptivity, air permeability and surface scaling was not found. On the basis of a multi-criteria evaluation of the tested concrete and performed Performance Index calculations, the best parameters were achieved by concrete series C30-4.5. Full article

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CONCRETE Optimizing the Use of Fly Ash in Concrete

utilization of fly ash in concrete began (for example, USBR 1948) follow-ing the pioneering research conducted at the University of California, Berkeley (Davis 1937).The last 50 years has seen the use of fly ash in concrete grow dramatically with close to 15 million tons used in con-crete, concrete products and grouts in the U.S. in 2005 (ACAA ...

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Repairing Concrete Surfaces - Concrete ... - Concrete Network

All unsound concrete must be removed, leaving sound, clean, and suitably roughened surfaces. For any overlay installation or surface repair, what constitutes "suitable roughness" should be specified using ICRI's Concrete Surface Profiles (CSP). This is a series of nine roughness levels ranging from acid etched to heavy scarification.

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Environmental impact of concrete - Wikipedia

The environmental impact of concrete, its manufacture and applications, are complex.Some effects are harmful; others welcome. Many depend on circumstances. A major component of concrete is cement, which has its own environmental and social impacts and contributes largely to those of concrete.. The cement industry is one of the main producers of carbon dioxide, a potent greenhouse gas.

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Test method for de-icing salt-frost scaling in high ...

Jan 01, 2018  De-icing salt-frost scaling in high-performance concrete: Name and reference of original method: CEN/TS 12390-9 (2006) Testing hardened concrete - Part 9: Freeze–thaw resistance - Scaling. 24 p. Fagerlund G (1982) The influence of slag cement on the frost resistance of the hardened concrete

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Freeze-Thaw Resistance - Portland Cement Association

Scaling is defined as a general loss of surface mortar or mortar surrounding the coarse aggregate particles on a concrete surface. This problem is typically caused by the expansion of water due to freezing and thawing cycles and the use of deicing chemicals; however properly specified, produced, finished, and cured quality concrete need not ...

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STRENGTH AND DURABILITY OF ULTRA-HIGH PERFORMANCE CONCRETE

The term Ultra High Performance Concrete (UHPC) has been used to describe a fiberreinforced, super plasticized, silica fume cement mixture with very low water-cement ratio (w/c) characterized by ...

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INFLUENCE OF PRE-WETTED LIGHTWEIGHT AGGREGATE ON SCALING ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The subject of the presented investigations was influence of pre-wetted lightweight aggregate on damage of the concrete surface due to cyclic freezing and thawing in the presence of de-icing salts tested according to the Swedish Standard SS 13 72 44 (the Borås method).

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