Ad
related to: does trugreen use harmful chemicals in concrete
Search results
Results from the WOW.Com Content Network
The environmental impact of concrete, its manufacture, and its applications, are complex, driven in part by direct impacts of construction and infrastructure, as well as by CO 2 emissions; between 4-8% of total global CO 2 emissions come from concrete. [1] Many depend on circumstances.
Concrete degradation may have many different causes. Concrete is mostly damaged by the corrosion of reinforcement bars due to the carbonatation of hardened cement paste or chloride attack under wet conditions. Chemical damage is caused by the formation of expansive products produced by chemical reactions (from carbonatation, chlorides, sulfates ...
Red List building materials. Red List Building Materials contain chemicals that have been designated as harmful to living creatures, including humans, or the environment. The Living Building Challenge Red List is maintained by the International Living Future Institute, and is the only organization that uses the term 'Red List'.
Website. www.trugreen.com. TruGreen, originally known as ChemLawn and later as TruGreen ChemLawn, is the largest lawn treatment company in the United States. [1][2][3] The company was founded in 1969 and provides lawn care and tree and shrub care treatments on a subscription basis. The treatments and services include weed killing, moss ...
Stabilization refers to the chemical changes between the stabilizing agent (binding agent) and the hazardous constituent. These changes should include a less soluble, less toxic constituent with hindered mobility. Common bonding agents include, but are not limited to, portland cement, lime, limestone, fly ash, slag, clay, and gypsum. Because of ...
The attack arises from soils containing SO2−. 4 ions, such as MgSO 4 or Na 2 SO 4 soluble and hygroscopic salts. The tricalcium aluminate (C 3 A) hydrates first interact with sulfate ions to form ettringite (AFt). Ettringite crystallizes into small acicular needles slowly growing in the concrete pores. Once the pores are completely filled ...
Polymer concrete, also known as Epoxy Granite, is a type of concrete that uses a polymer to replace lime -type cements as a binder. In some cases the polymer is used in addition to Portland cement to form Polymer Cement Concrete (PCC) or Polymer Modified Concrete (PMC). [1] Polymers in concrete have been overseen by Committee 548 of the ...
Plasticizers are chemical compounds enabling the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more. These additives are employed at the level of a few weight percent. Plasticizers and superplasticizers also retard the setting and hardening of concrete.
Ad
related to: does trugreen use harmful chemicals in concrete