About Crack Sealing
How to Evaluate the Effectiveness of Asphalt Crack Sealing
The process of asphalt crack sealing is a great way to improve the appearance of your driveway or parking lot. There are several factors to consider before choosing the right type of sealant: cost, environmental impact, and quality. Listed below are some of the main factors to consider. Once you've decided which method to use, you can move forward to the next step: evaluating the quality of sealants and the effectiveness of your crack sealing project.
Cost-effectiveness
To determine the effectiveness of different methods of crack sealing, researchers have analyzed the performance of unsealed and sealed pavement. Most studies have focused on unsealed pavement and found that sealing improves pavement performance. However, not many studies have compared the cost-benefit of different techniques. This research aims to address this gap. In this article, we will discuss the differences and similarities between these two methods.
Although it is an important preventive maintenance strategy, pavement experts differ on which method is more cost-effective. Using literature review, a survey, and field performance data, researchers have developed a cost-effectiveness guideline for pavement crack sealing. The results from this study provide a basis for comparing the various methods. Crack sealing is also more expensive than crack filling. Despite its initial high cost, crack sealing may offer longer service. More research is needed to determine whether higher performance materials are truly beneficial.
Environmental impact
While asphalt crack sealing may not have a negative environmental impact, it can have a detrimental impact on pavements. When applied improperly, crack sealing can cause damage to asphalt pavements due to moisture entrapment. Unlike other types of surface treatments, crack sealing prevents water from escaping upwards. In fact, crack sealing can reduce the lifespan of pavements by 1.1 to 2 years. This can lead to an increase in maintenance and rehabilitation costs.
This study shows that a crack seal technique can reduce emissions of nitrogen oxide and sulphur dioxide by 50 percent. However, the crack seal method has the lowest overall emission reduction. The researchers suggest that all methods of preventive maintenance reduce carbon dioxide emissions. They recommend that new pavement studies incorporate sustainable pavement management components and consider the environmental impact of asphalt crack sealing. The study concludes that future pavements must incorporate a comprehensive life-cycle assessment to evaluate their overall environmental impact.
Quality of sealant
When determining the quality of asphalt crack sealant, consider the following factors: Size, shape, moisture content, and repair method. Crack sealant's success depends on several factors. Generally, a crack less than 20% in crack density requires a more flexible product. In contrast, a larger crack density requires a stiffer sealant. In addition, sealant's tackiness decreases after it has been cured.
When choosing an asphalt crack filler, make sure to choose one with the right adhesive properties. Asphalt filler is not rubberized, and it might dislodge if the pavement moves. Sealant, on the other hand, expands and contracts with the pavement. If the crack filler doesn't expand and contract with the pavement, it is not the right choice. For this reason, choosing a high-quality asphalt crack filler is imperative.
About Crestwood, Missouri
Crestwood is a city in south St. Louis County, Missouri, United States, part of the Metropolitan Statistical Area known as Greater St. Louis. The population was 11,912 at the 2010 census.
In 2011, Bloomberg Businessweek magazine named Crestwood the "Best Place to Raise Kids in Missouri," lauding the community for top-tier schools and excellent municipal services.
According to the United States Census Bureau, the city has a total area of 3.60 square miles (9.32 km), all of it land.
Crestwood is home to several public parks, including Crestwood Park, featuring baseball and soccer fields, a playground, and tennis courts, and Whitecliff Park, featuring the Crestwood Community Center and the Crestwood Aquatic Center, a public water park. Adjacent to Whitecliff Park in the small city of Grantwood Village is the animal reserve owned by Anheuser-Busch called Grant's Farm, which is free and open to the public during the summer. Grant's Farm, now home to free-roaming buffalo, zebras, and deer among other animals, is located on property formerly owned by president Ulysses S. Grant in the period between the Mexican War and the Civil War.
Crestwood is the burial place of Sgt. John Sappington. He was a Revolutionary War soldier who was a personal bodyguard to Gen. George Washington at Valley Forge. He was also one of the pioneers at Fort Boonesborough in Madison County, Kentucky. The Sappingtons were large land owners in the area, and Mark and Thomas Sappington's homes still stand in the vicinity. The Sappington Cemetery is maintained by the City of Crestwood, and several Sappington descendants still pass through to maintain the family graves. Crestwood is also the final resting place of Revered Moses Dickson buried in Father Dickson Cemetery and is one of the historic stops along Grant's Trail a biking and walking trail in St. Louis County, Missouri
As of the census of 2010, there were 11,912 people, 5,153 households, and 3,348 families living in the city. The population density was 3,308.9 inhabitants per square mile (1,277.6/km2). There were 5,452 housing units at an average density of 1,514.4 per square mile (584.7/km). The racial makeup of the city was 93.8% White, 1.6% African American, 0.2% Native American, 2.4% Asian, 0.1% Pacific Islander, 0.4% from other races, and 1.7% from two or more races. Hispanic or Latino of any race were 1.9% of the population.
There were 5,153 households, of which 25.4% had children under the age of 18 living with them, 52.6% were married couples living together, 9.3% had a female householder with no husband present, 3.1% had a male householder with no wife present, and 35.0% were non-families. 30.6% of all households were made up of individuals, and 16.5% had someone living alone who was 65 years of age or older. The average household size was 2.29 and the average family size was 2.87.
The median age in the city was 46 years. 20.5% of residents were under the age of 18; 6.1% were between the ages of 18 and 24; 22% were from 25 to 44; 29.2% were from 45 to 64; and 22.3% were 65 years of age or older. The gender makeup of the city was 47.1% male and 52.9% female.
As of the census of 2000, there were 11,863 people, 5,111 households, and 3,521 families living in the city. The population density was 3,296.2 inhabitants per square mile (1,272.7/km2). There were 5,214 housing units at an average density of 1,448.7 per square mile (559.3/km). The racial makeup of the city was 96.41% White, 0.72% African American, 0.19% Native American, 1.45% Asian, 0.01% Pacific Islander, 0.26% from other races, and 0.96% from two or more races. Hispanic or Latino of any race were 1.00% of the population.
There were 5,111 households, out of which 24.0% had children under the age of 18 living with them, 57.8% were married couples living together, 8.7% had a female householder with no husband present, and 31.1% were non-families. 27.5% of all households were made up of individuals, and 14.9% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.83.
In the city, the population was spread out, with 20.0% under the age of 18, 5.9% from 18 to 24, 24.3% from 25 to 44, 25.0% from 45 to 64, and 24.8% who were 65 years of age or older. The median age was 45 years. For every 100 females, there were 88.8 males. For every 100 females age 18 and over, there were 85.3 males.
The median income for a household in the city was $54,185, and the median income for a family was $64,240. Males had a median income of $46,473 versus $31,934 for females. The per capita income for the city was $26,793. About 1.5% of families and 2.4% of the population were below the poverty line, including 3.8% of those under age 18 and 1.6% of those age 65 or over.
The city is governed by a mayor and a board of aldermen. The board comprises eight aldermen, two from each of the cities four wards. The mayor and aldermen are elected for three year terms. The current mayor is Grant Mabie. Mayor Gregg Roby resigned on June 5, 2018 for health concerns. Mayor Roby was in his second term of office which runs until April 2020.
The current aldermen are:
Lindbergh Schools serves almost all of Crestwood, while Affton School District serves a small portion. Their respective high schools are Lindbergh High School, and Affton High School.
Public schools of the Lindbergh District within the Crestwood City limits:
A private school, Holy Cross Academy is in Crestwood.
Nearby schools:
Senior high schools:
Grade schools:
The town has a police department with a total of 27 employees.