Pumpable lightweight aggregate concrete and preparation method thereof

• Main Authors: CHANG ZHIQI, GUO DAREN, CHANG FENG, ZHANG YI, SUN YIHAI
• Format: Patent
• Language: Chinese; English
• Published: 14.09.2018
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to pumpable lightweight aggregate concrete which comprises the following components in parts by weight: 170-190 parts of cement, 60-80 parts of fly ash, 90-110 parts of mineral powder, 800-810 parts of sand, 190-200 parts of pumice stone, 4-6 parts of additives and 190-200 parts of water, wherein the sand comprises natural sand and manufactured sand; the additives comprise anadhesive, a water reducing agent and an air entraining agent. By adjusting the particle size of the pumice stone and adding the additives to be matched, friction between inorganic materials is reduced, and the pumping property of the lightweight aggregate concrete is enhanced. 本发明涉及种可泵送的轻集料混凝土，包括以下以重量份数表示的组分：水泥170-190份；粉煤灰60-80份；矿粉90-110份；砂800-810份；浮石190-200份；外加剂4-6份；水190-200份；砂包括天然砂和人工砂；外加剂包括粘结剂、减水剂和加气剂。通过调整浮石自身粒径以及加入外加剂配合，减少无机材料之间的摩擦，增强轻集料混凝土的可泵送性。