"' Hydraulic cements "'( e . g ., Portland cement ) set and become adhesive due to a chemical reaction between the dry ingredients and water.
42.
I filled the crack with hydraulic cement some time ago, but now this cement has started to crack out so that water is coming in again.
43.
A number of innovations made the canal possible, including hydraulic cement, which was used to mortar its locks, and an ingenious floating towpath to span the Concord River.
44.
Portland cement was imported from England to Canada in barrels during the 19th century complimenting the modest production of hydraulic cement that began in Hull, Quebec in 1830.
45.
Early hydraulic cements, such as those of James Frost and Joseph Aspdin were relatively soft and readily ground by the primitive technology of the day, using flat millstones.
46.
Stress cracks are not uncommon in concrete floors; if they are not leaking water, things may be perfectly OK . And, you could fill them with hydraulic cement.
47.
If it is half an inch wide or wider, you can fill it with hydraulic cement, and try to get the cement as deeply into the crack as possible.
48.
After pressing in the hydraulic cement or mortar, cover the cracks with thick, wet newspapers and keep them wet for several days . They will need wetting quite often.
49.
About 43 % is recycled, often used as a pozzolan to produce hydraulic cement or hydraulic plaster and a replacement or partial replacement for Portland cement in concrete production.
50.
These include manufacture of industrial gases; fertilisers and pesticides; synthetic resins, plastic materials, and man-made fibres except glass; soap and cleaning preparations; tobacco; paints, varnishes and lacquers; and hydraulic cement.
