how many sand and gravel used in filing concrete hollow blocks

  • Construction methods Philippines.

    Philippine Hollow Blocks versus Solid Concrete ... it breaks in many pieces. Hollow blocks are nothing more than stones that ... of a cement/sand ...


    CONCRETE RULES OF THUMBS ... 440 lb. Sand & 1.6 Bag Mortar CONCRETE For 3000 psi:3-2-1 Mix–1 Ton Gravel, 1⁄2 Ton Sand, 6 Bags Cement, 1-

  • Concrete masonry unit - Wikipedia

    A concrete masonry unit ... usually sand and fine gravel, for high-density blocks). ... Concrete blocks may be produced with hollow centers ...

  • Why Fill Concrete in Blocks | eHow

    Why Fill Concrete in Blocks ... to fill the hollow openings or voids in concrete blocks ... used in poured concrete (Portland cement, sand, gravel and ...

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