公开(公告)号：US20150203406A1

公开(公告)日：2015-07-23

申请号：US14413043

申请日：2013-07-05

Applicant: LAFARGE

Inventor： Sébastien Bernardi ,  Laurent Ferreira ,  Samir Messad ,  Philippe Vachot

IPC: C04B28/04 ,  C04B28/08

CPC classification number: C04B28/04 ,  C04B28/08 ,  C04B2201/20 ,  C04B2201/32 ,  Y02W30/94 ,  C04B14/12 ,  C04B18/141 ,  C04B20/0076 ,  C04B2103/30 ,  C04B2103/304 ,  C04B2103/32 ,  C04B14/16

Abstract: A concrete includes cement; effective water; aggregates (G1) having a maximum size of 20 mm and a real density (ρ1) of 450 to 1200 kg/m3; optionally aggregates (G2) having a maximum size of 4 mm and a real density (ρ2), such, that the real density (ρ) of the mixture (G1)+(G2) is comprised from 450 to 1200 kg/m3 with 1/ρ=m1/(ρ1)+m2/(ρ2) m1 and m2 respectively being the mass fractions of (G1) and (G2); the concrete having (a) a density in the fresh state of 800 to 1500 kg/m3, (b) a Weffective/Beq ratio varying from 0.19 to 0.60, (c) a quantity of effective water varying from 100 to 320 litres per cubic metre of fresh concrete, (d) quantity of cement and optionally of additions greater than or equal to 200 kilograms per cubic metre of fresh concrete; (e) a volume of paste greater than or equal to 300 l/m3 of fresh concrete and a volume of air of 1 to 16%.

Abstract translation: 混凝土包括水泥; 有效的水; 最大尺寸为20mm的聚集体（G1）和450至1200kg / m 3的实际密度（＆rgr; 1）; 任选地具有最大尺寸为4mm的聚集体（G2）和实际密度（＆rgr; 2），使得混合物（G1）+（G2）的实际密度（＆rgr;）为450至1200kg / m1 /（＆rgr; 1）+ m2 /（＆rgr2）m1和m2分别为（G1）和（G2）的质量分数; 混凝土具有（a）新鲜状态下的密度为800至1500kg / m 3，（b）有效/ Beq比率为0.19至0.60，（c）有效水量为100至320升/立方厘米 （d）水泥量和任选的添加量大于或等于200千克/立方米新鲜混凝土; （e）大于或等于300升/立方米新鲜混凝土的浆体积和1至16％的空气体积。