| 摘要 |
<p>The fluidity of fresh concrete is improved, temperature cracking due to decrease of heat of hydration is suppressed, the long-term strength of hardened concrete is enhanced, the water-tightness is improved, alkaline aggregate reaction is suppressed, and chemical resistance is improved, thereby producing a good-quality concrete. Rock such as natural slate or clay stone having a flat friability is crushed to produce an admixture composed of small particles having a desired particle size.</p> |
