硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (4): 1240-1247.DOI: 10.16552/j.cnki.issn1001-1625.2025.0954
收稿日期:2025-09-26
修订日期:2025-10-18
出版日期:2026-04-20
发布日期:2026-05-14
通信作者:
陈 旸,工程师。E-mail:ychen2205@126.com作者简介:林明智(1987—),男,高级工程师。主要从事海洋地质和矿产地质方面的研究。E-mail:mingzhi_lin@163.com
基金资助:
LIN Mingzhi1,2(
), CHEN Yang1,2(
), CHEN Bo1,2
Received:2025-09-26
Revised:2025-10-18
Published:2026-04-20
Online:2026-05-14
摘要:
浅水海砂的矿物组成、物理力学性质和有害物质含量等是影响海砂混凝土力学性能与耐久性的重要因素。本文通过矿物自动分析仪对海南岛周边浅水海砂开展了矿物研究,并按照《建设用砂》中的规定进行海砂物理力学特性分析。研究结果显示,浅水海砂主要矿物成分为石英和长石。所有样品的氯化物含量均超标,松散堆积密度、松散堆积空隙率和含泥量超标的样品占比超过50%。浅水海砂无潜在碱-硅酸反应危害。预期大部分净化处理的海砂颗粒级配能达标。
中图分类号:
林明智, 陈旸, 陈波. 浅水海砂骨料矿物特征及物理力学性能研究[J]. 硅酸盐通报, 2026, 45(4): 1240-1247.
LIN Mingzhi, CHEN Yang, CHEN Bo. Mineral Characteristics, Physical and Mechanical Properties of Shallow Marine Sand Aggregates[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(4): 1240-1247.
| Physical property indicators | Apparent density/(kg·m-3) | Bulk density/(kg·m-3) | Porosity/% | Sulfate soundness/% |
|---|---|---|---|---|
| Minimum | 2 550 | 1 140 | 42 | 1 |
| Maximum | 2 700 | 1 530 | 57 | 10 |
| Average | 2 634 | 1 341 | 49 | 3 |
表1 浅水海砂物理力学性能
Table 1 Physical and mechanical properties of shallow marine sand
| Physical property indicators | Apparent density/(kg·m-3) | Bulk density/(kg·m-3) | Porosity/% | Sulfate soundness/% |
|---|---|---|---|---|
| Minimum | 2 550 | 1 140 | 42 | 1 |
| Maximum | 2 700 | 1 530 | 57 | 10 |
| Average | 2 634 | 1 341 | 49 | 3 |
| Physical propertyindicators | Shellcontent/% | Micacontent/% | Light substancecontent/% | Sulfide and sulfate content/% | Chloridecontent/% | Internal exposureindex | External exposure index |
|---|---|---|---|---|---|---|---|
| Minimum | 0.40 | 0.00 | 0.00 | 0.01 | 0.11 | 0.01 | 0.08 |
| Maximum | 37.20 | 0.10 | 2.10 | 0.84 | 0.62 | 0.30 | 0.70 |
| Average | 4.19 | 0.01 | 0.28 | 0.12 | 0.30 | 0.10 | 0.24 |
表2 浅水海砂有害物质及放射性比活度
Table 2 Harmful substances and specific activity of radioactivity of shallow marine sand
| Physical propertyindicators | Shellcontent/% | Micacontent/% | Light substancecontent/% | Sulfide and sulfate content/% | Chloridecontent/% | Internal exposureindex | External exposure index |
|---|---|---|---|---|---|---|---|
| Minimum | 0.40 | 0.00 | 0.00 | 0.01 | 0.11 | 0.01 | 0.08 |
| Maximum | 37.20 | 0.10 | 2.10 | 0.84 | 0.62 | 0.30 | 0.70 |
| Average | 4.19 | 0.01 | 0.28 | 0.12 | 0.30 | 0.10 | 0.24 |
| Physical propertyindicators | Bulkdensity | Porosity | Shellcontent | Light substancecontent | Sulfide and sulfatecontent | Chloridecontent | Mudcontent | Fineness modulus |
|---|---|---|---|---|---|---|---|---|
| Bulk density | 1 | -0.986 | -0.054 | -0.423 | -0.433 | -0.688 | -0.474 | 0.685 |
| Porosity | 1 | 0.060 | 0.403 | 0.416 | 0.659 | 0.491 | -0.688 | |
| Shell content | 1 | 0.070 | 0.336 | 0.056 | 0.210 | -0.173 | ||
| Light substance content | 1 | 0.216 | 0.355 | 0.248 | -0.365 | |||
| Sulfide and sulfate content | 1 | 0.354 | 0.527 | -0.402 | ||||
| Chloride content | 1 | 0.326 | -0.562 | |||||
| Mud content | 1 | -0.543 | ||||||
| Fineness modulus | 1 |
表3 浅水海砂主要物性指标相关性分析
Table 3 Correlation analysis of main physical properties indicators of shallow marine sand
| Physical propertyindicators | Bulkdensity | Porosity | Shellcontent | Light substancecontent | Sulfide and sulfatecontent | Chloridecontent | Mudcontent | Fineness modulus |
|---|---|---|---|---|---|---|---|---|
| Bulk density | 1 | -0.986 | -0.054 | -0.423 | -0.433 | -0.688 | -0.474 | 0.685 |
| Porosity | 1 | 0.060 | 0.403 | 0.416 | 0.659 | 0.491 | -0.688 | |
| Shell content | 1 | 0.070 | 0.336 | 0.056 | 0.210 | -0.173 | ||
| Light substance content | 1 | 0.216 | 0.355 | 0.248 | -0.365 | |||
| Sulfide and sulfate content | 1 | 0.354 | 0.527 | -0.402 | ||||
| Chloride content | 1 | 0.326 | -0.562 | |||||
| Mud content | 1 | -0.543 | ||||||
| Fineness modulus | 1 |
图3 预期净化处理后不同海域浅水海砂平均累计筛余率
Fig.3 Average cumulative percentage of sieve residue of shallow marine sand in different sea areas after expected purification treatment
| Producing area | Apparent density/(kg·m-3) | Bulk density/(kg·m-3) | Finenessmodulus | Particlessize-grading | Mudcontent/% | Chloridecontent/% | Shell content/% |
|---|---|---|---|---|---|---|---|
| Shandong[ | 2 610 | 1 460 | 2.7 | — | 1.6 | 0.01 | 1.9 |
| Fujian[ | 2 440 | 1 440 | 2.3 | — | 1.9 | 0.01 | 2.4 |
| Guangxi[ | 2 610 | 1 420 | 2.5 | — | 1.4 | 0.09 | 2.1 |
| Fujian[ | 2 580 | — | 2.5 | 2 | — | 0.36 | 30.0 |
| Zhejiang[ | — | — | — | — | 0.5 | 0.11 | 8.2 |
| Guangxi[ | 2 620 | 1 450 | 2.6 | — | — | — | — |
| Fujian[ | 2 630 | 1 470 | 2.2 | — | — | 0.06 | 2.3 |
| Shandong[ | 2 570 | — | — | — | 0.8 | 0.15~0.23 | 1.1 |
| Fujian[ | — | — | 2.4 | — | — | 0.08 | — |
| Fujian[ | 2 520 | 1 370 | 1.1 | — | 0.6 | 0.07 | 10.0 |
| Guangdong[ | 2 640 | 1 420 | 2.7 | 2 | — | 0.03 | 2.0~3.0 |
| Guangdong[ | 2 580 | 1 580 | 2.8 | 2 | — | 0.21 | 4.4 |
| Guangdong[ | 2 806 | 1 566 | 2.4 | 2 | 0.8 | 0.09 | 0.3 |
| Guangdong[ | 2 580 | — | 2.6 | — | 0.8 | 0.05 | — |
| This paper | 2 550~2 700 | 1 140~1 530 | 0.7~3.7 | 3 or not compliant | 0.7~37.5 | 0.11~0.62 | 0.4~37.2 |
表4 我国不同地区原状海砂主要物性指标
Table 4 Main physical property indicators of original marine sand in different regions of China
| Producing area | Apparent density/(kg·m-3) | Bulk density/(kg·m-3) | Finenessmodulus | Particlessize-grading | Mudcontent/% | Chloridecontent/% | Shell content/% |
|---|---|---|---|---|---|---|---|
| Shandong[ | 2 610 | 1 460 | 2.7 | — | 1.6 | 0.01 | 1.9 |
| Fujian[ | 2 440 | 1 440 | 2.3 | — | 1.9 | 0.01 | 2.4 |
| Guangxi[ | 2 610 | 1 420 | 2.5 | — | 1.4 | 0.09 | 2.1 |
| Fujian[ | 2 580 | — | 2.5 | 2 | — | 0.36 | 30.0 |
| Zhejiang[ | — | — | — | — | 0.5 | 0.11 | 8.2 |
| Guangxi[ | 2 620 | 1 450 | 2.6 | — | — | — | — |
| Fujian[ | 2 630 | 1 470 | 2.2 | — | — | 0.06 | 2.3 |
| Shandong[ | 2 570 | — | — | — | 0.8 | 0.15~0.23 | 1.1 |
| Fujian[ | — | — | 2.4 | — | — | 0.08 | — |
| Fujian[ | 2 520 | 1 370 | 1.1 | — | 0.6 | 0.07 | 10.0 |
| Guangdong[ | 2 640 | 1 420 | 2.7 | 2 | — | 0.03 | 2.0~3.0 |
| Guangdong[ | 2 580 | 1 580 | 2.8 | 2 | — | 0.21 | 4.4 |
| Guangdong[ | 2 806 | 1 566 | 2.4 | 2 | 0.8 | 0.09 | 0.3 |
| Guangdong[ | 2 580 | — | 2.6 | — | 0.8 | 0.05 | — |
| This paper | 2 550~2 700 | 1 140~1 530 | 0.7~3.7 | 3 or not compliant | 0.7~37.5 | 0.11~0.62 | 0.4~37.2 |
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摘要 |
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