CN108059396A - 一种风积沙水泥稳定级配碎石 - Google Patents

一种风积沙水泥稳定级配碎石 Download PDF

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CN108059396A
CN108059396A CN201711383292.1A CN201711383292A CN108059396A CN 108059396 A CN108059396 A CN 108059396A CN 201711383292 A CN201711383292 A CN 201711383292A CN 108059396 A CN108059396 A CN 108059396A
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CN108059396B (zh
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耿权
陈立兵
师华
符超
董彦
霍道平
周新尧
罗思桥
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CCCC Second Harbor Engineering Co
CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075Uses not provided for elsewhere in C04B2111/00 for road construction
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
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  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract

本发明公开了一种风积沙水泥稳定级配碎石,该风积沙水泥稳定级配碎石由以下质量百分比的原材料组成:水泥4.2~5.2%、水:4.6~6.6%,余量为风积沙级配碎石;所述风积沙级配碎石按质量比计由如下原料组成:风积沙:石屑:碎石=(8‑13):(17‑26):(66‑70)。本发明的风积沙水泥稳定级配碎石的公路工程资本投入较小、筑路原材料成本低,而且提高了水泥稳定级配碎石的弯拉强度及抗裂性能。

Description

一种风积沙水泥稳定级配碎石
技术领域
本发明涉及建筑材料领域,具体地指一种风积沙水泥稳定级配碎石。
背景技术
沙漠地区筑路成本高,路面基层主要是:(1)筑路石料资源缺乏导致成本显著增加;(2)采用细集料0.075mm以下颗粒含量多影响整体的稳定性,而且现有的水泥稳定级配碎石的弯拉强度及抗裂性能不够理想,且公路使用寿命不长。
发明内容
本发明的目的就是要提供一种风积沙水泥稳定级配碎石,解决了公路工程资本投入较大、筑路原材料成本高,而且提高了水泥稳定级配碎石的弯拉强度及抗裂性能。
为实现上述目的,本发明提供的一种风积沙水泥稳定级配碎石,其特征在于,由以下质量百分比的原材料组成:水泥4.2~5.2%、水:4.6~6.6%,余量为风积沙级配碎石;所述风积沙级配碎石按质量比计由如下原料组成:风积沙:石屑:碎石=(8-13):(17-26):(66-70)。
进一步地,所述风积沙的粒径组成为(0~0.075)mm、(0.075~0.25)mm、(0.25~3)mm,按质量比计由如下原料组成:
粒径为(0~0.075)mm的风积沙 1~2
粒径为(0.075~0.25)mm的风积沙 75~87
粒径为(0.25~3)mm的风积沙 11~24。
优选地,所述风积沙的粒径组成为(0~0.075)mm、(0.075~0.25)mm、(0.25~3)mm,按质量比计由如下原料组成:
粒径为(0~0.075)mm的风积沙 1
粒径为(0.075~0.25)mm的风积沙 79
粒径为(0.25~3)mm的风积沙 20。
进一步地,所述石屑的粒径为(0~4.75)mm。
进一步地,所述碎石的粒径组成为(4.75~9.5)mm、(9.5~19.0)mm、(19.0~26.5)mm,按质量比计由如下原料组成:
粒径为(4.75~9.5)mm的碎石 18-22
粒径为(9.5~19.0)mm的碎石 39-43
粒径为(19.0~26.5)mm的碎石 37-41。
优选地,所述碎石的粒径组成为(4.75~9.5)mm、(9.5~19.0)mm、(19.0~26.5)mm,按质量比计由如下原料组成:
粒径为(4.75~9.5)mm的碎石 21-22
粒径为(9.5~19.0)mm的碎石 41-42
粒径为(19.0~26.5)mm的碎石 38-39。
与现有技术相比,本发明具有如下优点:
其一,本发明的风积沙水泥稳定级配碎石中不含细集料,加入的风积沙的0.075mm以下颗粒含量非常少,收缩小、抗弯拉和抗裂性能良好;
其二,本发明的风积沙可直接利用,运输距离短、成本低,直接降低筑路成本;
其三,本发明利用沙漠地区的风积沙减少外来建筑材料的污染,具有环境协调性好的特点。
具体实施方式
以下结合具体实施例对本发明作进一步的详细描述。
实施例1
一种风积沙水泥稳定级配碎石,是由P.F32.5水泥、水、风积沙级配碎石组成,其质量百分配比为:水泥:4.2%、水:5.6%、风积沙级配碎石:90.2%。
其中,风积沙级配碎石由以下质量比的原材料组成:风积沙:石屑:碎石=8:26:66。
风积沙的粒径分布的质量比为:
(0~0.075)mm:(0.075~0.25)mm:(0.25~3)mm=2:87:11。
碎石的粒径分布的质量比为:
(4.75~9.5)mm:(9.5~19.0)mm:(19.0~26.5)mm=18:43:39。
实施例2
一种风积沙水泥稳定级配碎石,是由P.F32.5水泥、水、风积沙级配碎石组成,其质量百分配比为:水泥:4.7%、水:5.4%、风积沙级配碎石:89.9%。
风积沙级配碎石由以下质量比的原材料组成:风积沙:石屑:碎石=13:17:70。
风积沙的粒径分布的质量比为:
(0~0.075)mm:(0.075~0.25)mm:(0.25~3)mm=1:75:24。
碎石的粒径分布的质量比为:
(4.75~9.5)mm:(9.5~19.0)mm:(19.0~26.5)mm=22:39:39。
实施例3
一种风积沙水泥稳定级配碎石,是由P.F32.5水泥、水、风积沙级配碎石组成,其质量百分配比为:水泥4.7%、水:5.2%、风积沙级配碎石:90.1%。
其中,风积沙级配碎石由以下质量比的原材料组成:风积沙:石屑:碎石=12:20:68。
风积沙的粒径分布的质量比为:
(0~0.075)mm:(0.075~0.25)mm:(0.25~3)mm=1:79:20。
碎石的粒径分布的质量比为:
(4.75~9.5)mm:(9.5~19.0)mm:(19.0~26.5)mm=21:41:38。
实施例4
一种风积沙水泥稳定级配碎石,是由P.F32.5水泥、水、风积沙级配碎石组成,其质量百分配比为:水泥4.4%、水:5.3%、风积沙级配碎石:90.3%。
其中,风积沙级配碎石由以下质量比的原材料组成:风积沙:石屑:碎石=9:25:66。
风积沙的粒径分布的质量比为:
(0~0.075)mm:(0.075~0.25)mm:(0.25~3)mm=1:75:24。
碎石的粒径分布的质量比为:
(4.75~9.5)mm:(9.5~19.0)mm:(19.0~26.5)mm=21:42:37。
实施例5
一种风积沙水泥稳定级配碎石,是由P.F32.5水泥、水、风积沙级配碎石组成,其质量百分配比为:水泥4.4%、水:5.3%、风积沙级配碎石:90.3%。
其中,风积沙级配碎石由以下质量比的原材料组成:风积沙:石屑:碎石=13:17:70。
风积沙的粒径分布的质量比为:
(0~0.075)mm:(0.075~0.25)mm:(0.25~3)mm=1:75:24。
碎石的粒径分布的质量比为:
(4.75~9.5)mm:(9.5~19.0)mm:(19.0~26.5)mm=20:39:41。
对比例1
一种公路路面基层水泥稳定级配碎石,是由P.F32.5水泥、水、碎石组成,水泥:4.7%,水:5.2%,碎石:90.1%;
碎石的粒径分布的质量比为:(0~4.75)mm:(4.75~9.5)mm:(9.5~19)mm:(19~26.5)mm=32:14:28:26。
效果例:
对实施例1~3和对比例1进行无侧限抗压强度试验,实验结果见表1。
表1无侧限抗压强度试验
本发明所用的水泥满足JTG/T F20《公路路面基层施工技术规范》规定,不宜使用快硬水泥、早强水泥以及已受潮变质的水泥。本发明所用的水可以是普通用水。在水质方面,通常适于饮用的水均可拌制和养护水泥稳定级配碎石。当以某种水制成的水泥砂浆的抗压强度与蒸馏水制成的水泥砂浆抗压强度比,低于90%者,此种水不宜用于水泥稳定材料的施工。在拌和水泥稳定级配碎石时水泥用量一定要控制准确,用量太少减少胶凝作用,用量太大加大水化热反应温度,极易形成裂缝,另外在振动式压路机振动时,极易形成一层水泥浆覆盖在水泥稳定材料表面,阻止水稳水化热的挥发,不利于压路机作业。本发明的原料配比适当,效果确切,可取得适宜效果。当水泥的质量百分比为5.4%-5.7%,水的质量百分比为5.6%时,效果最佳。
以上所述,仅为本发明的具体实施方式,应当指出,任何熟悉本领域的技术人员在本发明所揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。

Claims (6)

1.一种风积沙水泥稳定级配碎石,其特征在于,由以下质量百分比的原材料组成:水泥4.2~5.2%、水:4.6~6.6%,余量为风积沙级配碎石;所述风积沙级配碎石按质量比计由如下原料组成:风积沙:石屑:碎石=(8-13):(17-26):(66-70)。
2.根据权利要求1所述的风积沙水泥稳定级配碎石,其特征在于:所述风积沙的粒径组成为(0~0.075)mm、(0.075~0.25)mm、(0.25~3)mm,按质量比计由如下原料组成:
粒径为(0~0.075)mm的风积沙 1~2
粒径为(0.075~0.25)mm的风积沙 75~87
粒径为(0.25~3)mm的风积沙 11-24。
3.根据权利要求2所述的风积沙水泥稳定级配碎石,其特征在于:所述风积沙的粒径组成为(0~0.075)mm、(0.075~0.25)mm、(0.25~3)mm,按质量比计由如下原料组成:
粒径为(0~0.075)mm的风积沙 1
粒径为(0.075~0.25)mm的风积沙 79
粒径为(0.25~3)mm的风积沙 20。
4.根据权利要求1所述的风积沙水泥稳定级配碎石,其特征在于:所述石屑的粒径为(0~4.75)mm。
5.根据权利要求1所述的风积沙水泥稳定级配碎石,其特征在于:所述碎石的粒径组成为(4.75~9.5)mm、(9.5~19.0)mm、(19.0~26.5)mm,按质量比计由如下原料组成:
粒径为(4.75~9.5)mm的碎石 18-22
粒径为(9.5~19.0)mm的碎石 39-43
粒径为(19.0~26.5)mm的碎石 37-41。
6.根据权利要求5所述的风积沙水泥稳定级配碎石,其特征在于:所述碎石的粒径组成为(4.75~9.5)mm、(9.5~19.0)mm、(19.0~26.5)mm,按质量比计由如下原料组成:
粒径为(4.75~9.5)mm的碎石 21-22
粒径为(9.5~19.0)mm的碎石 41-42
粒径为(19.0~26.5)mm的碎石 38-39。
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