Abstract: A cost-effective process for treating a concrete structure includes the following steps. A surface of the concrete structure is coated with an organo-silicon compound and the organo-silicon coated surface is covered so as to reduce atmospheric exposure of the organo-silicon compound while the organo-silicon compound migrates into the concrete structure.

Abstract: A cost-effective process for treating a concrete structure includes the following steps. A surface of the concrete structure is coated with an organo-silicon compound and the organo-silicon coated surface is covered so as to reduce atmospheric exposure of the organo-silicon compound while the organo-silicon compound migrates into the concrete structure.

Abstract: A water based water repellent composition for rendering cellulose containing materials water repellent which contains, in addition to water, from about 2.5 to about 20 percent by volume of a water repellent compound compatible with the cellulose containing materials and from about 0.1 to about 1 percent by volume of a surfactant compatible with the water repellent compound and capable of enhancing the wetting properties of the water repellent compound. The water repellent compound is a fluoropolymer, an amino-functional siloxane, a self cross-linking silicone and mixtures thereof wherein the amino-functional siloxane is represented by the general formula ##STR1## wherein Si is silicon; O is oxygen; n is a positive integer; and A is H, R or X.

Abstract: Methods for treating siliceous and carbon central structures with a water repellant composition and a paint are provided. An effective amount of water repellant composition is dispersed in paint or in paint and water, and the mixture then is applied in a continuous process after mixing to the object to be treated.

Abstract: Stripping compositions for removing paints, varnishes, enamels, photoresists and the like, from substrates comprising compositions of(a) an amide compound of the formula: ##STR1## and mixtures thereof wherein R is a member selected from the group consisting of methyl, ethyl and propyl; R.sub.1 is a member selected from the group consisting of hydrogen, methyl, ethyl and propyl, and R.sub.2 is a member selected from the group consisting of methyl, ethyl and propyl, and(b) an amine compound of the formula:R.sub.3 --NH--(CH.sub.2).sub.m --OHand mixtures thereof, wherein R.sub.3 is a member selected from the group consisting of hydrogen, methyl, ethyl and propyl, and m is an integer of 1-4.

Abstract: An improved method for inhibiting corrosion of internal structural members of reinforced concrete, such as the corrosion of reinforcing steel members in a concrete bridge deck or a concrete paved driving surface, due to salt migration into the reinforced concrete. In general, the method comprises applying an effective amount of a hydrolyzable organo silicon compound to the surface of the reinforced concrete to substantially cover the surface of the structure with the organo silicon, and contacting the resulting organo silicon coated surface, after a period of time effective to allow the organo silicon compound to migrate into the structure, with an effective amount of water to substantially wet the surface of the organo silicon impregnated structure.