Compositions and methods for microtexture improvement of aggregate particles

Coating aggregates with polymeric cement compositions addresses the issue of microtexture loss in reactive aggregates by enhancing their resistance to polishing, ensuring safer and more economical road construction.

WO2026015300A1PCT designated stage Publication Date: 2026-01-15AUBURN UNIVERSITY +1
View PDF 7 Cites 0 Cited by

Patent Information

Application Number
PCT/US2025/035530
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-02-14
Filing Date
2025-06-26
Publication Date
2026-01-15

AI Technical Summary

Technical Problem

Existing aggregates, particularly soft and reactive materials like carbonaceous limestone, lose microtexture over time, leading to undesirable friction loss and polishing effects, compromising road safety and requiring costly and inefficient solutions.

Method used

Coating aggregate particles with a polymeric cement composition to enhance microtexture, either before or after construction, using methods such as spraying, brushing, or soaking, with specific formulations including high alumina cement, Portland cement, and other additives to improve friction properties.

Benefits of technology

The polymeric cement coating significantly enhances the microtexture of aggregates, making them more resistant to polishing, thereby improving long-term surface friction and safety, allowing the use of locally available, more susceptible aggregates in road construction.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure US2025035530_15012026_PF_FP_ABST
    Figure US2025035530_15012026_PF_FP_ABST
Patent Text Reader

Abstract

The present disclosure provides methods of improving microtexture of one or more aggregate particles, for instance by coating the aggregate particles with a polymeric cement composition. The methods can be performed prior to construction with the aggregate particles or subsequent to construction with the aggregate particles. As described herein, the coating provides improved microtexture to the particles.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] COMPOSITIONS AND METHODS FOR MICROTEXTURE IMPROVEMENT OF

[0002] AGGREGATE PARTICLES

[0003] CROSS-REFERENCE TO RELATED APPLICATIONS

[0004] This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Application Serial No. 63 / 670,459, filed on July 12, 2024, and also of U.S. Provisional Application Serial No. 63 / 758,561, filed on February 14, 2025. The entire disclosures of both provisional applications are incorporated herein by reference in their entirety.

[0005] BACKGROUND AND SUMMARY

[0006] The road and highway system provides an integral function in almost every person’s life. In view of the millions of vehicles using roadways every day across the world, the safety of pavement and other roadway materials is of extreme importance. In particular, the microtexture properties of roadway materials is essential for providing safe friction at both high and low vehicle speeds. Microtexture, generally known as surface irregularities at wavelengths less than 0.5 mm), can increase the coefficient of friction between the surface of a vehicle tire(s) that are in direct contact with the surface of a roadway material.

[0007] Microtexture properties are a function of aggregate minerology and hardness from roadway materials that are extracted from quarries. For instance, hard and nonreactive aggregates such as siliceous granite are capable of maintaining microtexture over the life of roadway materials and can thus provide desirable safe, long-term friction. In contrast, soft and reactive aggregates such as carbonaceous limestone lose microtexture over time and thus exhibit long-term friction loss. This process, known as polishing, has an undesirable effect on certain materials that are often used for construction of roadways. A need exists to mitigate the polishing effects on certain aggregates in order to provide safer roadways in a cost efficient manner.

[0008] Accordingly, the present disclosure provides various methods of improving the microtexture of aggregate particles. For instance, one or more aggregate particles can be coated with a polymeric cement composition to improve their microtexture. Such coating can be performed prior to construction with the aggregate particles. Alternatively, the coating can be performed subsequent to construction with the aggregate particles. Systems and compositions comprising aggregate particles and a polymeric cement composition coated on the aggregate particles are also described herein.

[0009] As detailed in the present disclosure, several advantages can be realized using the described system, methods, and compositions. First, locally available aggregates that are more polish susceptible can be used in construction of roadways. Further, using the described features, low microtexture aggregates can be converted into aggregates that are more polish resistant with higher microtexture aggregates. These advantages can produce surface mixes with safer long-term surface friction qualities. As a result, a more economic and environmentally friendly procedure can be utilized in the construction of roadways and in the rehabilitation of roadways to provide increased vehicle safety.

[0010] BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 shows Tuf-C samples that are unpolished (left panels) and that are polished (right panels).

[0012] Figure 2 shows Tylac samples that are unpolished (left panels) and that are polished (right panels).

[0013] Figure 3 shows RP samples that are unpolished (left panels) and that are polished (right panels).

[0014] Figure 4 shows BPN (British Pendulum Number) results from testing the various samples.

[0015] DETAILED DESCRIPTION

[0016] In an aspect, a method of improving microtexture of one or more aggregate particles is provided, the method comprising the step of coating the one or more aggregate particles with a polymeric cement composition, wherein the method is performed prior to construction with the one or more aggregate particles, and wherein the coating provides improved microtexture to the one or more aggregate particles. For instance, this aspect can be utilized on aggregate particles prior to their use in construction (e.g., in a quarry). In an embodiment, the method is performed in a quarry. In an embodiment, the step of coating is a three dimensional application of the polymeric cement composition to the one or more aggregate particles.

[0017] In an embodiment, the one or more aggregate particles comprise carbonate. In an embodiment, the one or more aggregate particles comprise limestone. In an embodiment, the one or more aggregate particles comprise marble.

[0018] In an embodiment, the one or more aggregate particles comprise a low friction surface. In an embodiment, the one or more aggregate particles is polish susceptible.

[0019] In an embodiment, the coating is performed via one or more of spraying, brushing, soaking, or any combination thereof. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 100 pounds per ton of aggregate particles. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 100 pounds per ton of aggregate particles to about 1000 pounds per ton of aggregate particles. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 1000 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles.

[0020] In an embodiment, the polymeric cement composition comprises a high alumina cement. In an embodiment, the polymeric cement composition comprises a Portland cement. In an embodiment, the polymeric cement composition comprises calcium sulfate. In an embodiment, the polymeric cement composition comprises a reaction accelerator. In an embodiment, the polymeric cement composition comprises a synthetic polymer. In an embodiment, the polymeric cement composition comprises a water retention agent. In an embodiment, the polymeric cement composition comprises a water reducing agent. In an embodiment, the polymeric cement composition comprises a defoaming agent. In an embodiment, the polymeric cement composition comprises a retarding agent. In an embodiment, the polymeric cement composition comprises silica. In an embodiment, the polymeric cement composition comprises carbon black. In an aspect, a method of improving microtexture of one or more aggregate particles, the method comprising the step of coating the one or more aggregate particles with a polymeric cement composition, wherein the method is performed subsequent to construction with the one or more aggregate particles, and wherein the coating provides improved microtexture to the one or more aggregate particles. For instance, this aspect can be utilized on aggregate particles after their use in construction (e.g., a roadway).

[0021] In an embodiment, the method is performed on a roadway. In an embodiment, the step of coating is a two dimensional application of the polymeric cement composition to the one or more aggregate particles.

[0022] In an embodiment, the one or more aggregate particles comprise carbonate. In an embodiment, the one or more aggregate particles comprise limestone. In an embodiment, the one or more aggregate particles comprise marble.

[0023] In an embodiment, the one or more aggregate particles comprise a low friction surface. In an embodiment, the one or more aggregate particles is polish susceptible.

[0024] In an embodiment, the coating is performed via one or more of spraying, brushing, soaking, or any combination thereof. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 100 pounds per ton of aggregate particles. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 100 pounds per ton of aggregate particles to about 1000 pounds per ton of aggregate particles. In an embodiment, the coating is applied to the one or more aggregate particles at an amount between about 1000 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles.

[0025] In an embodiment, the polymeric cement composition comprises a high alumina cement. In an embodiment, the polymeric cement composition comprises a Portland cement. In an embodiment, the polymeric cement composition comprises calcium sulfate. In an embodiment, the polymeric cement composition comprises a reaction accelerator. In an embodiment, the polymeric cement composition comprises a synthetic polymer. In an embodiment, the polymeric cement composition comprises a water retention agent. In an embodiment, the polymeric cement composition comprises a water reducing agent. In an embodiment, the polymeric cement composition comprises a defoaming agent. In an embodiment, the polymeric cement composition comprises a retarding agent. In an embodiment, the polymeric cement composition comprises silica. In an embodiment, the polymeric cement composition comprises carbon black.

[0026] In an aspect, composition is provided, wherein the composition comprises i) one or more aggregate particles and i) a polymeric cement composition, wherein the polymeric cement composition is coated on the one or more aggregate particles.

[0027] In an embodiment, the one or more aggregate particles comprise carbonate. In an embodiment, the one or more aggregate particles comprise limestone. In an embodiment, the one or more aggregate particles comprise marble.

[0028] In an embodiment, the one or more aggregate particles comprise a low friction surface. In an embodiment, the one or more aggregate particles is polish susceptible.

[0029] In an embodiment, the one or more aggregate particles are present on a roadway, and wherein the polymeric cement composition is present on an exposed surface of the one or more aggregate particles.

[0030] In an embodiment, the polymeric cement composition comprises a high alumina cement. In an embodiment, the polymeric cement composition comprises a Portland cement. In an embodiment, the polymeric cement composition comprises calcium sulfate. In an embodiment, the polymeric cement composition comprises a reaction accelerator. In an embodiment, the polymeric cement composition comprises a synthetic polymer. In an embodiment, the polymeric cement composition comprises a water retention agent. In an embodiment, the polymeric cement composition comprises a water reducing agent. In an embodiment, the polymeric cement composition comprises a defoaming agent. In an embodiment, the polymeric cement composition comprises a retarding agent. In an embodiment, the polymeric cement composition comprises silica. In an embodiment, the polymeric cement composition comprises carbon black.

[0031] In the various embodiments described herein, the polymer cement composition can comprise one or more of the following components (for instance, at one or more of the following percentages):

[0032] • High alumina cement, e.g. at 5-20% • Portland cement, e.g. at 1-10%

[0033] • Calcium sulfate, e.g. at 3-9%

[0034] • Reaction accelerator, e.g. at 0.01-0.1%

[0035] • Synthetic polymer, e.g. at 1-15%

[0036] • Water retention agent, e.g. at 0.1-0.5%. Components can include a Modified Hydroxyethyl Methyl Cellulose (e.g., Dow Chemical's Cellosize, Ashland's Culminal UP and SE Tylose'sTylose HEC grades)

[0037] • Water reducing agent, e.g. at 0.2-1%. Components can include a Sulfonated Melamine Formaldehyde Resin based Superplasticizer (e.g., BASF's Melment F- 10, Mapei's Melchem 38 and Euclid's EUCON grades)

[0038] • Defoaming agent, e.g. at 0.1-0.5%. Components can include one or more of Silicon, Alcohol, Polyglycol (e.g., Wacker's Silicone grades, BASF's Dehydrain and SIKA's Antifoam).

[0039] • Retarding agent, e.g. at 0.01-0.05%. Components can include one or more of Tartaric Acid, Citric Acid, or Sodium Gluconate.

[0040] • Silica (e.g., 12-140 mesh), e.g. at 10-30%

[0041] • Carbon black, e.g. at 0.05-01.%

[0042] Various embodiments of the invention are provided throughout the present disclosure. For instance, the following numbered embodiments are contemplated and are nonlimiting:

[0043] 1. A method of improving microtexture of one or more aggregate particles, the method comprising the step of coating the one or more aggregate particles with a polymeric cement composition, wherein the method is performed prior to construction with the one or more aggregate particles, and wherein the coating provides improved microtexture to the one or more aggregate particles.

[0044] 2. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the method is performed in a quarry.

[0045] 3. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the step of coating is a three dimensional application of the polymeric cement composition to the one or more aggregate particles. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise carbonate. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise limestone. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise marble. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise a low friction surface. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles is polish susceptible. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the coating is performed via one or more of spraying, brushing, soaking, or any combination thereof. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 100 pounds per ton of aggregate particles. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 100 pounds per ton of aggregate particles to about 1000 pounds per ton of aggregate particles. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 1000 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a high alumina cement. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a Portland cement. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises calcium sulfate. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a reaction accelerator. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a synthetic polymer. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a water retention agent. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a water reducing agent. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a defoaming agent. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a retarding agent. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises silica. The method of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises carbon black. A method of improving microtexture of one or more aggregate particles, the method comprising the step of coating the one or more aggregate particles with a polymeric cement composition, wherein the method is performed subsequent to construction with the one or more aggregate particles, and wherein the coating provides improved microtexture to the one or more aggregate particles. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the method is performed on a roadway. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the step of coating is a two dimensional application of the polymeric cement composition to the one or more aggregate particles. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise carbonate. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise limestone. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise marble. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise a low friction surface. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles are polish susceptible. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 100 pounds per ton of aggregate particles. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 100 pounds per ton of aggregate particles to about 1000 pounds per ton of aggregate particles. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the coating is applied to the one or more aggregate particles at an amount between about 1000 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a high alumina cement. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a Portland cement. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises calcium sulfate. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a reaction accelerator. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a synthetic polymer. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a water retention agent. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a water reducing agent. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a defoaming agent. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a retarding agent. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises silica. The method of clause 25, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises carbon black. A composition comprising i) one or more aggregate particles and i) a polymeric cement composition, wherein the polymeric cement composition is coated on the one or more aggregate particles. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise carbonate. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise limestone. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise marble. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles comprise a low friction surface. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles are polish susceptible. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the one or more aggregate particles are present on a roadway, and wherein the polymeric cement composition is present on an exposed surface of the one or more aggregate particles. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a high alumina cement. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a Portland cement. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises calcium sulfate. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a reaction accelerator. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a synthetic polymer. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a water retention agent. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a water reducing agent. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a defoaming agent. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises a retarding agent. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises silica. The composition of clause 48, any other suitable clause, or any combination of suitable clauses, wherein the polymeric cement composition comprises carbon black. EXAMPLE 1

[0046] The instant example generated data using the testing standard ASTM E303 (Standard Test Method for Measuring Surface Frictional Properties Using the British Pendulum Tester). A source material of Calera limestone was utilized and control measurements are well known to be very low.

[0047] For the instant example, test specimens were prepared and coated with various formulations of polymeric cement composition. Specimens were analyzed using the British Pendulum Test (BPT), a standardized method for evaluating the frictional properties and polish susceptibility of aggregates and widely used in road surfacing applications. This test measures the Polished Stone Value (PSV), an indicator of aggregate ability to maintain skid resistance after being subjected to polishing forces that simulate traffic wear. The apparatus to measure PSV includes a pendulum with a standardized rubber slider at its base, which is swung across the test surface to measure friction under wet conditions.

[0048] Aggregate samples were prepared by embedding them in a resin mold to form a flat, uniform surface. For PSV determination, the test specimen was polished using a laboratory polishing machine, which simulates traffic wear by applying rubber wheels and abrasive slurry.

[0049] After preparation, the specimen was mounted on the pendulum tester and the surface was wetted to mimic real-world conditions. The pendulum was released from a standard height, allowing the rubber slider to contact the test surface. The height reached by the pendulum after the swing was recorded, with lower heights indicating higher friction due to greater resistance from the surface.

[0050] In PSV testing, the friction readings before and after polishing were compared to assess the polish susceptibility of an aggregate. Generally, aggregates with higher PSV values are preferred for high-traffic pavements in which skid resistance is critical, such as intersections and curves. The British Pendulum Test is simple, portable, and effective for evaluating aggregate performance, helping to ensure road safety through appropriate material selection.

[0051] A comparison of three different test specimen types are shown in Figures 1-3, including Tuf-C samples (Figure 1), Tylac samples (Figure 2), and RP samples (Figure 3). Furthermore, Figure 4 displays the BPN results from testing the various samples.

[0052] After polishing, the RP samples demonstrated 55 percent higher friction indicator results compared to controls. Further, Tuf-C samples showed 10 percent higher friction indicator results, and Tylac samples showed 40 percent higher friction indicator results than controls.

[0053] Unexpectedly, the microtexture on certain samples appeared improved as a result of polishing.

[0054] EXAMPLE 2

[0055] The compositions and methods described herein can undergo various analyses as described in the instant example. For instance, laboratory devices such as the British Pendulum Tester (BPT), the Dynamic Friction Tester (DFT), and the Circular Track Meter (CTM) can be utilized to further evaluate the polishing resistance of aggregate particles and mixed aggregate blends. The NCAT Three Wheel Polishing Device (TWPD) is also effective for assessing aggregate particles. In particular, the TWPD can be used to simulate long-term polishing under traffic, and the DFT can be used as a laboratory surrogate test for full-scale friction testing of inservice roadways. In this manner, the texture and friction properties of the aggregate particles can be characterized before and after polishing to evaluate for friction performance requirements.

[0056] Furthermore, laboratory testing can be utilized to verify the amount of coating to aggregate particles that may be required to provide sufficient friction of a blended mix. Sample slabs fabricated with aggregate particles can be treated with varying amounts of coating material. Coating material can include, but is not limited to, a polymeric cement composition.

[0057] Aggregates (e.g., one or more slabs) treated with varying amounts of coating material can be evaluated using a TWPD and tested periodically with a DFT. Production treatment can be established using various coating rates that provide the necessary long-term friction performance. The system and process can further include production means to apply a particular rate of coating material through spraying, brushing, soaking, and the like. For instance, a continuous evaluation to provide mass and volume measurements can be acquired using electronic instrumentation in order to ensure the proportion of constituent materials satisfies the friction design requirements, thus preventing an unintentional decrease in performance.

[0058] Additionally, mass instrumentation to measure solid components, volume instrumentation to measure liquid components, power supplies, a data acquisition computer, and a program can be utilized for further evaluation. Mass instrumentation can include multiple load cells arranged in either static arrays for hoppers or weigh bridges for belts in which the voltage feedback from the load cells is proportional to solid mass. Volume instrumentation can include rotational pump sensors in which the rotation of the pump is correlated to liquid volume. Power is necessary to excite both types of sensors, and feedback is provided to a data acquisition computer.

[0059] The data acquisition computer can be programmed to convert sensor feedback into calibrated solid mass and liquid volume measures. Embodied carbon can be properly assigned to each mix constituent material based on published and accepted standards, and all components of carbon associated with energy consumption (e.g., pumps, motors, etc.) are also recorded. The programmed computer can proportionally calculate embodied carbon from both solid and liquid mix constituent materials and plant energy consumption to summarize total embodied carbon for each unit of production based on all the accumulated data and the material production rate.

Claims

CLAIMS1. A method of improving microtexture of one or more aggregate particles, the method comprising the step of coating the one or more aggregate particles with a polymeric cement composition, wherein the method is performed prior to construction with the one or more aggregate particles, and wherein the coating provides improved microtexture to the one or more aggregate particles.

2. The method of claim 1, wherein the method is performed in a quarry.

3. The method of claim 1, wherein the step of coating is a three dimensional application of the polymeric cement composition to the one or more aggregate particles.

4. The method of claim 1, wherein the one or more aggregate particles comprise carbonate.

5. The method of claim 1, wherein the one or more aggregate particles comprise limestone.

6. The method of claim 1, wherein the one or more aggregate particles comprise marble.

7. The method of claim 1, wherein the one or more aggregate particles comprise a low friction surface.

8. The method of claim 1, wherein the one or more aggregate particles is polish susceptible.

9. The method of claim 1, wherein the coating is performed via one or more of spraying, brushing, soaking, or any combination thereof.

10. The method of claim 1, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles.

11. The method of claim 1, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 100 pounds per ton of aggregate particles.

12. The method of claim 1, wherein the coating is applied to the one or more aggregate particles at an amount between about 100 pounds per ton of aggregate particles to about 1000 pounds per ton of aggregate particles.

13. The method of claim 1 , wherein the coating is applied to the one or more aggregate particles at an amount between about 1000 pounds per ton of aggregate particles to about5000 pounds per ton of aggregate particles.

14. The method of claim 1, wherein the polymeric cement composition comprises a high alumina cement.

15. The method of claim 1, wherein the polymeric cement composition comprises a Portland cement.

16. The method of claim 1, wherein the polymeric cement composition comprises calcium sulfate.

17. The method of claim 1, wherein the polymeric cement composition comprises a reaction accelerator.

18. The method of claim 1, wherein the polymeric cement composition comprises a synthetic polymer.

19. The method of claim 1, wherein the polymeric cement composition comprises a water retention agent.

20. The method of claim 1, wherein the polymeric cement composition comprises a water reducing agent.

21. The method of claim 1, wherein the polymeric cement composition comprises a defoaming agent.

22. The method of claim 1, wherein the polymeric cement composition comprises a retarding agent.

23. The method of claim 1, wherein the polymeric cement composition comprises silica.

24. The method of claim 1, wherein the polymeric cement composition comprises carbon black.

25. A method of improving microtexture of one or more aggregate particles, the method comprising the step of coating the one or more aggregate particles with a polymeric cement composition, wherein the method is performed subsequent to construction with the one or more aggregate particles, and wherein the coating provides improved microtexture to the one or more aggregate particles.

26. The method of claim 25, wherein the method is performed on a roadway.

27. The method of claim 25, wherein the step of coating is a two dimensional application of the polymeric cement composition to the one or more aggregate particles.

28. The method of claim 25, wherein the one or more aggregate particles comprise carbonate.

29. The method of claim 25, wherein the one or more aggregate particles comprise limestone.

30. The method of claim 25, wherein the one or more aggregate particles comprise marble.

31. The method of claim 25, wherein the one or more aggregate particles comprise a low friction surface.

32. The method of claim 25, wherein the one or more aggregate particles are polish susceptible.

33. The method of claim 25, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles.

34. The method of claim 25, wherein the coating is applied to the one or more aggregate particles at an amount between about 1 pounds per ton of aggregate particles to about 100 pounds per ton of aggregate particles.

35. The method of claim 25, wherein the coating is applied to the one or more aggregate particles at an amount between about 100 pounds per ton of aggregate particles to about1000 pounds per ton of aggregate particles.

36. The method of claim 25, wherein the coating is applied to the one or more aggregate particles at an amount between about 1000 pounds per ton of aggregate particles to about 5000 pounds per ton of aggregate particles.

37. The method of claim 25, wherein the polymeric cement composition comprises a high alumina cement.

38. The method of claim 25, wherein the polymeric cement composition comprises a Portland cement.

39. The method of claim 25, wherein the polymeric cement composition comprises calcium sulfate.

40. The method of claim 25, wherein the polymeric cement composition comprises a reaction accelerator.

41. The method of claim 25, wherein the polymeric cement composition comprises a synthetic polymer.

42. The method of claim 25, wherein the polymeric cement composition comprises a water retention agent.

43. The method of claim 25, wherein the polymeric cement composition comprises a water reducing agent.

44. The method of claim 25, wherein the polymeric cement composition comprises a defoaming agent.

45. The method of claim 25, wherein the polymeric cement composition comprises a retarding agent.

46. The method of claim 25, wherein the polymeric cement composition comprises silica.

47. The method of claim 25, wherein the polymeric cement composition comprises carbon black.

48. A composition comprising i) one or more aggregate particles and i) a polymeric cement composition, wherein the polymeric cement composition is coated on the one or more aggregate particles.

49. The composition of claim 48, wherein the one or more aggregate particles comprise carbonate.

50. The composition of claim 48, wherein the one or more aggregate particles comprise limestone.

51. The composition of claim 48, wherein the one or more aggregate particles comprise marble.

52. The composition of claim 48, wherein the one or more aggregate particles comprise a low friction surface.

53. The composition of claim 48, wherein the one or more aggregate particles are polish susceptible.

54. The composition of claim 48, wherein the one or more aggregate particles are present on a roadway, and wherein the polymeric cement composition is present on an exposed surface of the one or more aggregate particles.

55. The composition of claim 48, wherein the polymeric cement composition comprises a high alumina cement.

56. The composition of claim 48, wherein the polymeric cement composition comprises a Portland cement.

57. The composition of claim 48, wherein the polymeric cement composition comprises calcium sulfate.

58. The composition of claim 48, wherein the polymeric cement composition comprises a reaction accelerator.

59. The composition of claim 48, wherein the polymeric cement composition comprises a synthetic polymer.

60. The composition of claim 48, wherein the polymeric cement composition comprises a water retention agent.

61. The composition of claim 48, wherein the polymeric cement composition comprises a water reducing agent.

62. The composition of claim 48, wherein the polymeric cement composition comprises a defoaming agent.

63. The composition of claim 48, wherein the polymeric cement composition comprises a retarding agent.

64. The composition of claim 48, wherein the polymeric cement composition comprises silica.

65. The composition of claim 48, wherein the polymeric cement composition comprises carbon black.

Citation Information

Patent Citations

  • Compositions and methods for the introduction of elastomeric reinforcement fibers in asphalt cement concrete

    US10392508B2

  • Inter-penetrating elastomer network derived from ground tire rubber particles

    US10800906B2

  • Asphalt repair system and method

    US20110250016A1

  • Method and system for in-situ cross linking of polymers, bitumen and similar materials to increase strength, toughness and durability via irradiation with electron beams from mobile accelerators

    US20150071707A1

  • Pavement repair system

    US20190301105A1