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.
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.
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 Florissant, Missouri
Florissant is a city in St. Louis County, Missouri, within Greater St. Louis. It is a middle class, second-ring northern suburb of St. Louis. Based on the 2020 United States census, the city had a total population of 52,533.
The exact date the first settlers went to the Valley of Florissant is unknown, but it is one of the oldest settlements in the state of Missouri. Some historians believe it was settled about the same time as St. Louis. The first civil government was formed in 1786. Spanish archives in Havana reveal 40 people and seven plantations were in Florissant at the time of the 1787 census. The village, called "Fleurissant", meaning "Blooming" in English, by its French settlers and "St. Ferdinand" by its Spanish rulers, was a typical French village with its commons and common fields. Originally a separate town, and now an inner suburb of St. Louis, the community was centered on (and frequently called after) the parish of St. Ferdinand. The center of the parish, the Old St. Ferdinand Shrine, survives and is listed on the National Register of Historic Places.
In c. 1809, the Cold Water Cemetery had the first burial, since 2004 it has been listed in the National Register of Historic Places for its social history.
As late as 1889, the town was predominantly French-speaking (while the southern portion of the metropolis was populated by German-speakers). The first train line to the area was constructed in 1878—an extension of the line which went from St. Louis City to Normandy. The last train to Florissant ran on November 14, 1931.
Following World War II, Florissant went from a small village community to a large suburban center, as developers such as Alfred H. Mayer Co. began building subdivisions on what was formerly farmland and empty acreage. Around 18,000 houses were built between 1947 and 1980, and the population swelled to its peak of about 76,000 in the mid-1970s, making it the largest city in St. Louis County.
James J. Eagan was the first mayor of Florissant after a charter amendment created the position. He ultimately served 37 years from 1963 until his death on November 2, 2000, being re-elected into office nine times, and became one of the longest-serving mayors of any city in the United States. In his final year, he was awarded the title of Best Politician in St. Louis by the Riverfront Times. The civic center off Parker Road is named the James J. Eagan Community Center in his memory.
In 2012, Florissant was ranked 76 in Money magazine's top-100 list of Best Places to Live – America's Best Small Cities. In 2014, Florissant ranked as the #1 Best Small City to Retire To in America and the second-safest city in Missouri.
The heart of Old Town Florissant is listed on the National Register of Historic Places as the St. Ferdinand Central Historic District. The boundaries of the district are roughly rue St. Francois, rue St. Ferdinand, and rue St. Denis, and Lafayette Street. The City of St. Ferdinand Multiple Resource Area (MRA), located in the oldest section of the present city of Florissant, encompasses approximately 156 city blocks and encloses the approximate area of the City of St. Ferdinand, as Florissant was known from 1857 to 1939. This MRA comprises 124 historically significant properties ranging in date from 1790 to 1940. The historic Old St. Ferdinand Shrine is located on the western end of Old Town. The Shrine and Historic Site consists of four historic buildings on their original locations: the 1819 convent, 1821 church, 1840 rectory, and 1888 schoolhouse. It is listed individually on the National Register of Historic Places and is a U.S. Historic District.
Historic Florissant, the local historical society, operates out of the preserved Gittemeier House.
According to the United States Census Bureau, the city has a total area of 12.87 square miles (33.33 km), of which 12.56 square miles (32.53 km2) are land and 0.31 square mile (0.80 km) is covered by water.
At the 2010 census, there were 52,158 people, 21,247 households and 13,800 families living in the city. The population density was 4,152.7 inhabitants per square mile (1,603.4/km2). There were 22,632 housing units at an average density of 1,801.9 per square mile (695.7/km). The racial makeup of the city was 58.3% White, 36.8% African American, 0.2% Native American, 0.8% Asian, 0.6% from other races, and 2.3% from two or more races. Hispanic or Latino people of any race were 2.0% of the population.
There were 21,247 households, of which 32.3% had children under the age of 18 living with them, 42.4% were married couples living together, 17.5% had a female householder with no husband present, 5.1% had a male householder with no wife present, and 35.0% were non-families. 29.9% of all households were made up of individuals, and 12.2% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 3.00.
The median age in the city was 38 years. 23.9% of residents were under the age of 18; 8.6% were between the ages of 18 and 24; 26.2% were from 25 to 44; 25.8% were from 45 to 64; and 15.5% were 65 years of age or older. The gender makeup of the city was 46.8% male and 53.2% female.
At the 2000 census, there were 50,497 people, 20,399 households and 13,687 families living in the city. The population density was 4,442.4 inhabitants per square mile (1,715.2/km2). There were 21,027 housing units at an average density of 1,849.8 per square mile (714.2/km). The racial makeup of the city was 86.66% White, 10.51% African American, 0.20% Native American, 0.61% Asian, 0.03% Pacific Islander, 0.52% from other races, and 1.48% from two or more races. Hispanic or Latino people of any race were 1.49% of the population.
There were 20,399 households, of which 30.7% had children under the age of 18 living with them, 49.8% were married couples living together, 13.2% had a female householder with no husband present, and 32.9% were non-families. 28.8% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 3.01.
24.7% of the population were under the age of 18, 8.2% from 18 to 24, 29.9% from 25 to 44, 20.0% from 45 to 64, and 17.1% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 89.5 males. For every 100 females age 18 and over, there were 84.1 males.
The median household income was $44,462 and the median family income was $52,195. Males had a median income of $37,434 compared with $27,247 for females. The per capita income for the city was $20,622. About 2.7% of families and 4.0% of the population were below the poverty line, including 4.5% of those under age 18 and 3.7% of those age 65 or over.
Florissant is covered by the Hazelwood and Ferguson-Florissant public school districts. McCluer North High School and McCluer High School of the Ferguson-Florissant School District, and North Technical High School are high schools in Florissant. Hazelwood Central is the only high school in Florissant belonging to the Hazelwood School District. Hazelwood Northwest Middle School and several elementary schools are also within the municipal limits.
North County Christian School is a pre-school to grade 12 Christian school that is theologically associated with the Church of the Nazarene.
There are several kindergarten through 8th-grade parochial schools in Florissant. These include Atonement Lutheran School, Sacred Heart, St. Ferdinand, St. Rose Philippine Duchesne and Saint Norbert.
Florissant has a theological college, an extension campus, and a barber college. Saint Louis Christian College is a private, four-year, undergraduate institution that is theologically and ecclesiastically associated with the Christian Churches and Churches of Christ. Lindenwood University has its offsite North County Campus located in the former Our Lady of Fatima School. Missouri School of Barbering and Hairstyling-St Louis is also located in Florissant.
St. Louis Community College–Florissant Valley and University of Missouri–St. Louis are located in close proximity to the city.
St. Louis County Library operates the Florissant Valley Branch in Florissant.
Florissant is home to Northwest HealthCare, an outpatient subsidiary of Christian Hospital. Services include: emergency department, sleep lab, bone density testing, mammography, ultrasound and MRI. A satellite facility of the Alvin J. Siteman Cancer Center that is under construction on the campus is scheduled to open in late 2019.