PCC Pavement Patching Materials and Procedures

Parker, Frazier; Shoemaker, W. L.

doi:10.1061/(asce)0899-1561(1991)3:1(29)

Cited by 9 publications

(7 citation statements)

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“…e left side of (7) was plotted in Figure 9 to nd the best-t curve (dashed line) through four di erent ber-inclined angles. To meet the requirement of the model in (7), another best-t curve (solid line) with zero y-intercept is computed. As seen in Figure 9, the considered inclination angle is 0°, 30°, 45°, and 60°, respectively.…”

Section: Micromechanics-based Design Of Domestic Hes-eccmentioning

confidence: 99%

“…In the past three decades, academics and industrial scholars have done a lot of experimental research and successfully developed the repair materials which can attain enough high compressive strength and bending strength at a very early age. ese concrete materials obtain early high strength by using either special fast-setting cement [2][3][4][5][6] or combined use of ordinary cement with accelerating agent [7][8][9], resulting in various strength increasing rates.…”

Section: Introductionmentioning

confidence: 99%

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Utilization of Local Ingredients for the Production of High‐Early‐Strength Engineered Cementitious Composites

Deng

2018

Advances in Materials Science and Engineering

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is properly cited. e rapid repair and retrofitting of existing transportation infrastructure requires dimensional stability and ductile repair material that can obtain sufficiently high strength in a few hours to accommodate the large loading and deformation at an early age. Engineering cementitious composites (ECCs) is a class representative of the new generation of high-performance fiber-reinforced cement-based composites (HPFRCC) with medium fiber content. e unique properties of tremendous ductility and tight multiple crack behavior indicate that ECC can be used as an effective retrofit material. e wide application of this material in China will require the use of all local ingredients. In this study, based on Chinese domestic ingredients, including matrix materials and all fibers, high-early-strength ECC (HES-ECC) was designed under the guidance of strain-hardening criterion of ECC. e matrix properties and fiber/matrix interfacial micromechanics properties were obtained from three-point-bending test and singlefiber pullout test. e mechanical properties of HES-ECC were achieved by direct tensile test. e experimental results show that HES-ECC was successfully developed by using all Chinese materials. When using the domestic PVA fiber at 2%, the strength requirement can be achieved but only a low ductility. When using the domestic PE fiber at 0.8%, the strength and deformation requirement both can be obtained. e HES-ECC developed in this study exhibited compressive strength of more than 25 MPa within 6 hours, and an ultimate tensile strength of 5-6 MPa and tensile strain capacity of 3-4% after 60 days. Moreover, the cost of using domestic fiber can be largely reduced compared with using imported fiber, up to 70%; it is beneficial to the promotion of these high-early-strength ECCs in the Chinese market.

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Section: Micromechanics-based Design Of Domestic Hes-eccmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Utilization of Local Ingredients for the Production of High‐Early‐Strength Engineered Cementitious Composites

Deng

2018

Advances in Materials Science and Engineering

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“…24 Patching materials should be able to gain a minimum strength of 2000 psi (14 MPa) before the patch can be opened to the public. [25][26][27] To avoid traffic disturbance, a nighttime repair is often scheduled, with the lane closure typically taking place between 9 p.m. and 5 a.m. This 8-hour repair window also includes the removal of deteriorated concrete and the preparation of surface and reinforcement, all of which together may take approximately 4 hours.…”

Section: Early Heat Of Hydrationmentioning

confidence: 99%

Performance evaluation of rapid-set prepackaged cementitious materials for rehabilitation of surface distress of concrete transportation structures

Yang¹,

Brown²,

Huddleston³

et al. 2016

pcij

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“…Several authorities suggest different minimum limits for compressive strength values, depending on the specific construction need. According to Parker and Shoemaker [17], 13.8 MPa of initial compressive strength is adequate for a repair material to be resistant against several types of deformation. The New Jersey State Department of Transportation (NJDOT) suggests 20.7 MPa of compressive strength at the age of 6 h for a ''fast-track mix'' developed in the mid-1990s [18].…”

Section: Materials and Mixture Proportionsmentioning

confidence: 99%

High-early-strength ductile cementitious composites with characteristics of low early-age shrinkage for repair of infrastructures

et al. 2013

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Reduced performance in concrete infrastructures is mainly caused by the formation of cracks, which may arise due to deteriorating mechanisms during service life. In most cases, reduced performance calls for urgent repairs to the degraded section. Therefore, it is highly desirable to develop dimensionally stable, ductile repair materials that can attain adequately high strength in a limited amount of time, compensate for significant deformation due to mechanical and environmental loadings, and prevent early-age shrinkage cracks. In this paper, the performance of such a material (high-early-strength engineered cementitious composites, HES-ECC, with very low early-age shrinkage capacity) was investigated by studying mechanical properties and dimensional stability. Composites were produced with different water to cementitious materials and slag to Portland cement ratios. In order to enhance composite properties in terms of ductility and early-age shrinkage characteristics, saturated lightweight aggregates replaced sand in the mixtures. The experimental results show that the majority of HES-ECC mixtures developed in this study attained compressive strength values of more than 20.0 MPa and minimum flexural strength of 6.0 MPa within 6 h. Moreover, the HES-ECC mixtures exhibited strain-hardening behavior with strain capacities comparable to normal strength ECC, as well as substantially reduced autogenous shrinkage strain, both of which are unlikely to trigger the formation of cracks in tension at early ages. The integration of these conflicting parameters suggests that HES-ECC can easily meet the need for fast and durable repairs.

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PCC Pavement Patching Materials and Procedures

Cited by 9 publications

References 0 publications

Utilization of Local Ingredients for the Production of High‐Early‐Strength Engineered Cementitious Composites

Utilization of Local Ingredients for the Production of High‐Early‐Strength Engineered Cementitious Composites

Performance evaluation of rapid-set prepackaged cementitious materials for rehabilitation of surface distress of concrete transportation structures

High-early-strength ductile cementitious composites with characteristics of low early-age shrinkage for repair of infrastructures

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