Southern Association of Colleges and Schools Commission on Colleges. Bob Jones University is a candidate for accreditation with the Southern Association of Colleges and Schools Commission on Colleges to award associate, baccalaureate, masters, and doctorate degrees.
hthÂ® calcium hardness increaser, 4 lbs. hthÂ® calcium hardness increaser, 4 lbs., is used to raise the calcium hardness of swimming pool water. Low calcium hardness may cause the pool water to be corrosive, resulting in damage to pool surfaces and equipment.
Calcium chloride (CaCl2) has the ability to. accelerate cement hydration and reduce set. time by as much as two thirds. Research. has shown that a 2% addition rate has an. equivalent cure strength at 50Â°F as plain. concrete at 70Â°F. Set times below 50Â°F will.