| http://www.w3.org/ns/prov#value | - At present, in the field of cement additives which are materials other than cement, aggregate, and water, diligent researches are being pursued regarding compositions of a great variety of new additives such as cement water reducing agent, high-range water reducing agent, plasticizer agent, air entraining agent, retardor, accelerating agent, hydration heat inhibitor, and drying shrinkage allaying
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