Word: mortaring
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Dates: during 1980-1989
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...most popular areas of giving thus far have been for endowing professorships and for student aid, Putnam said. Money for the "bricks and mortar" of house renovations have been lagging, he said, but predicted that funds for those purposes would increase as the College got further along in the renovation projects this summer
...late. Similarly, the Sea Skua and Exocet antiship missiles are almost impossible to evade. A would-be victim can use electronic countermeasures like radar jamming to confuse the attacking missile's guidance system. A ship can also launch clouds of metallic strips from a special mortar to decoy its radar. Perhaps the best defenses are computer-guided antiaircraft guns and supersophisticated antimissile missiles...
...salts crystallize again, they crack pores within the stone. In recent years, scientists agree, the salt damage has been accelerated by the Aswan High Dam, more than 400 miles upriver. The new dam has raised the water table throughout the Nile Valley. Another villain has been the high-salt mortar used to restore the flaking monument. "Walking on top of the Sphinx in the morning," says Gauri, "you can hear the stones popping like potato chips...
Gauri, who has worked on the Taj Mahal and the Acropolis, proposes that the Egyptians flush out the Sphinx's salt deposits and replace part of its veneer with low-salt stone and mortar. "If the work is done right," says Gauri, "it should last as long as the stones of the pharaohs...
...plans yet to replant the ivy when the Houses are all spruced up again-that, in fact, the ivy was partially responsible for the structural decay that prompted the massive renovation. The plant's tendrils, it seems, secrete a substance that slowly eats away at a wall's mortar and cement...