The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious Materials
The chemical interaction between calcium chloride (CaCl2) and cementitious binder may alter the transport properties of concrete which are important in predicting the service life of infrastructure elements. This paper presents a series of fluid and gas transport measurements made on cementitious mo...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/929864 |
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| author | Yaghoob Farnam Taylor Washington Jason Weiss |
| author_facet | Yaghoob Farnam Taylor Washington Jason Weiss |
| author_sort | Yaghoob Farnam |
| collection | DOAJ |
| description | The chemical interaction between calcium chloride (CaCl2) and cementitious binder may alter the transport properties of concrete which are important in predicting the service life of infrastructure elements. This paper presents a series of fluid and gas transport measurements made on cementitious mortars before and after exposure to various solutions with concentrations ranging from 0% to 29.8% CaCl2 by mass. Fluid absorption, oxygen diffusivity, and oxygen permeability were measured on mortar samples prepared using Type I and Type V cements. Three primary factors influence the transport properties of mortar exposed to CaCl2: (1) changes in the degree of saturation, (2) calcium hydroxide leaching, and (3) formation of chemical reaction products (i.e., Friedel’s salt, Kuzel’s salt, and calcium oxychloride). It is shown that an increase in the degree of saturation decreases oxygen permeability. At lower concentrations (<~12% CaCl2 at room temperature), the addition of CaCl2 can increase calcium hydroxide leaching, thereby increasing mortar porosity (this is offset by the formation of Friedel’s salt and Kuzel’s salt that can block the pores). At higher concentrations (>~12%), the formation of chemical reaction products (mainly calcium oxychloride) is a dominant factor decreasing the fluid and gas transport in concrete. |
| format | Article |
| id | doaj-art-201b43154c094bd49ce448c8132eec94 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-201b43154c094bd49ce448c8132eec942025-02-03T06:12:03ZengWileyAdvances in Civil Engineering1687-80861687-80942015-01-01201510.1155/2015/929864929864The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious MaterialsYaghoob Farnam0Taylor Washington1Jason Weiss2Lyles School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, USALyles School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, USALyles School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, USAThe chemical interaction between calcium chloride (CaCl2) and cementitious binder may alter the transport properties of concrete which are important in predicting the service life of infrastructure elements. This paper presents a series of fluid and gas transport measurements made on cementitious mortars before and after exposure to various solutions with concentrations ranging from 0% to 29.8% CaCl2 by mass. Fluid absorption, oxygen diffusivity, and oxygen permeability were measured on mortar samples prepared using Type I and Type V cements. Three primary factors influence the transport properties of mortar exposed to CaCl2: (1) changes in the degree of saturation, (2) calcium hydroxide leaching, and (3) formation of chemical reaction products (i.e., Friedel’s salt, Kuzel’s salt, and calcium oxychloride). It is shown that an increase in the degree of saturation decreases oxygen permeability. At lower concentrations (<~12% CaCl2 at room temperature), the addition of CaCl2 can increase calcium hydroxide leaching, thereby increasing mortar porosity (this is offset by the formation of Friedel’s salt and Kuzel’s salt that can block the pores). At higher concentrations (>~12%), the formation of chemical reaction products (mainly calcium oxychloride) is a dominant factor decreasing the fluid and gas transport in concrete.http://dx.doi.org/10.1155/2015/929864 |
| spellingShingle | Yaghoob Farnam Taylor Washington Jason Weiss The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious Materials Advances in Civil Engineering |
| title | The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious Materials |
| title_full | The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious Materials |
| title_fullStr | The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious Materials |
| title_full_unstemmed | The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious Materials |
| title_short | The Influence of Calcium Chloride Salt Solution on the Transport Properties of Cementitious Materials |
| title_sort | influence of calcium chloride salt solution on the transport properties of cementitious materials |
| url | http://dx.doi.org/10.1155/2015/929864 |
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